City of League City (TX) Water Quality

City of League City is a large public water system in EPA region 6 that provides tap water for the 77573 zip codes. It has 13 facilities where the water supply was tested for 85 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 59.52 µg/L. The maximum reported level of Manganese was 3.8 µg/L. There were 2 contamintants found in the City of League City water supply at levels that were above the minimum reporting level.

Table of Contents
Contaminants
Facilities
FAQ

Contaminants

Jump To Contaminant
1,1-dichloroethane
1,2,3-trichloropropane
1,3-butadiene
1,4-dioxane
1-butanol
11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid
17-alpha-ethynylestradiol
17-beta-estradiol
1H,1H,2H,2H-perfluorodecane sulfonic acid
1H,1H,2H,2H-perfluorohexane sulfonic acid
1H,1H,2H,2H-perfluorooctane sulfonic acid
2,4-dinitrotoluene
2,6-dinitrotoluene
2-methoxyethanol
2-propen-1-ol (Allyl Alcohol)
4,4'-dichloro dichlorophenyl ethylene (DDE)
4,8-dioxa-3H-perfluorononanoic acid
4-androstene-3,17-dione
9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid
alpha-hexachlorocyclohexane
anatoxin-a
bromochloromethane (Halon 1011)
bromomethane
Butylated Hydroxyanisole
chlorate
chlorodifluoromethane (HCFC-22)
chloromethane
chlorpyrifos
chromium
chromium-6
cobalt
cylindrospermopsin
dimethipin
dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate
equilin
estriol
estrone
ethoprop
Germanium
HAA5 (five regulated haloacetic acids)
HAA6Br (six brominated haloacetic acids)
HAA9 (nine haloacetic acids)
hexafluoropropylene oxide dimer acid (GenX)
lithium
Manganese
methyl-tertiary-butyl-ether (MTBE)
molinate
molybdenum
N-ethyl perfluorooctanesulfonamidoacetic acid
N-methyl perfluorooctanesulfonamidoacetic acid
nitrobenzene
nonafluoro-3,6-dioxaheptanoic acid
o-toluidine
oxyfluorfen
perchlorate
perfluoro(2-ethoxyethane)sulfonic acid
perfluoro-3-methoxypropanoic acid
perfluoro-4-methoxybutanoic acid
perfluorobutanesulfonic acid
perfluorobutanoic acid
perfluorodecanoic acid
perfluorododecanoic acid
perfluoroheptanesulfonic acid
perfluoroheptanoic acid
perfluorohexanesulfonic acid
perfluorohexanoic acid
perfluorononanoic acid
perfluorooctanesulfonic acid
perfluorooctanoic acid
perfluoropentanesulfonic acid
perfluoropentanoic acid
perfluorotetradecanoic acid
perfluorotridecanoic acid
perfluoroundecanoic acid
profenofos
quinoline
s-ethyl-dipropylthiocarbamate (EPTC)
strontium
tebuconazole
terbacil
testosterone
total microcystins
Total Permethrin
tribufos
vanadium

1,1-dichloroethane (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

1,2,3-trichloropropane (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

1,3-butadiene (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.1 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.1 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.1 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.1 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.1 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.1 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.1 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.1 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.1 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.1 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.1 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.1 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.1 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.1 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.1 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.1 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.1 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.1 µg/L
Reference Level: ?

Contaminant Details

1,4-dioxane (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.07 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.07 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.07 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.07 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.07 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.07 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.07 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.07 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.07 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.07 µg/L
Reference Level: ?

Contaminant Details

1-butanol (12)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<2 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<2 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<2 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<2 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<2 µg/L

Below Reporting Level

12/18/2018

6 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<2 µg/L

Below Reporting Level

12/18/2018

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<2 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<2 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<2 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<2 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<2 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<2 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: 700 µg/L

Contaminant Details

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

17-alpha-ethynylestradiol (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0009 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0009 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.0009 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0009 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.0009 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.0009 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.0009 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0009 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0009 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0009 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.0009 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.0009 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0009 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.0009 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.0009 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.0009 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0009 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.0009 µg/L
Reference Level: ?

Contaminant Details

17-beta-estradiol (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0004 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0004 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.0004 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0004 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.0004 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.0004 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.0004 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0004 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0004 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0004 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.0004 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.0004 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0004 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.0004 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.0004 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.0004 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0004 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.0004 µg/L
Reference Level: ?

Contaminant Details

1H,1H,2H,2H-perfluorodecane sulfonic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

1H,1H,2H,2H-perfluorohexane sulfonic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

1H,1H,2H,2H-perfluorooctane sulfonic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

2,4-dinitrotoluene (7)

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<2 µg/L

Below Reporting Level

11/14/2001

23 years ago

WALKER_ST

WALKER ST ℹ️

<2 µg/L

Below Reporting Level

11/14/2001

23 years ago

3RD_ST

3RD ST ℹ️

<2 µg/L

Below Reporting Level

11/14/2001

23 years ago

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

WALKER_ST

WALKER ST ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

GLEN_COVE_

GLEN COVE ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

3RD_ST

3RD ST ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: ?

Contaminant Details

2,6-dinitrotoluene (7)

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<2 µg/L

Below Reporting Level

11/14/2001

23 years ago

WALKER_ST

WALKER ST ℹ️

<2 µg/L

Below Reporting Level

11/14/2001

23 years ago

3RD_ST

3RD ST ℹ️

<2 µg/L

Below Reporting Level

11/14/2001

23 years ago

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

WALKER_ST

WALKER ST ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

GLEN_COVE_

GLEN COVE ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

3RD_ST

3RD ST ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: ?

Contaminant Details

2-methoxyethanol (12)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.4 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.4 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.4 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.4 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.4 µg/L

Below Reporting Level

12/18/2018

6 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.4 µg/L

Below Reporting Level

12/18/2018

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.4 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.4 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.4 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.4 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.4 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.4 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.4 µg/L
Reference Level: 21 µg/L

Contaminant Details

2-propen-1-ol (Allyl Alcohol) (12)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.5 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.5 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.5 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.5 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.5 µg/L

Below Reporting Level

12/18/2018

6 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.5 µg/L

Below Reporting Level

12/18/2018

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.5 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.5 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.5 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.5 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.5 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.5 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.5 µg/L
Reference Level: 35 µg/L

Contaminant Details

4,4'-dichloro dichlorophenyl ethylene (DDE) (7)

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<0.8 µg/L

Below Reporting Level

11/14/2001

23 years ago

WALKER_ST

WALKER ST ℹ️

<0.8 µg/L

Below Reporting Level

11/14/2001

23 years ago

3RD_ST

3RD ST ℹ️

<0.8 µg/L

Below Reporting Level

11/14/2001

23 years ago

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<0.8 µg/L

Below Reporting Level

5/8/2001

24 years ago

WALKER_ST

WALKER ST ℹ️

<0.8 µg/L

Below Reporting Level

5/8/2001

24 years ago

GLEN_COVE_

GLEN COVE ℹ️

<0.8 µg/L

Below Reporting Level

5/8/2001

24 years ago

3RD_ST

3RD ST ℹ️

<0.8 µg/L

Below Reporting Level

5/8/2001

24 years ago

Minimum Reporting Level: 0.8 µg/L
Reference Level: ?

Contaminant Details

4,8-dioxa-3H-perfluorononanoic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

4-androstene-3,17-dione (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0003 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0003 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.0003 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0003 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.0003 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.0003 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.0003 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0003 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0003 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0003 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.0003 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.0003 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0003 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.0003 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.0003 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.0003 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0003 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.0003 µg/L
Reference Level: ?

Contaminant Details

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.002 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.002 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.002 µg/L
Reference Level: ?

Contaminant Details

alpha-hexachlorocyclohexane (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

1/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.01 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.01 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.01 µg/L
Reference Level: 0.006 µg/L

Contaminant Details

anatoxin-a (16)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/27/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/27/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/13/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/13/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

7/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

7/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

7/11/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

7/11/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

6/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

6/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

6/13/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

6/13/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

5/28/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

5/28/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

5/16/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

5/16/2019

6 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

bromochloromethane (Halon 1011) (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.06 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.06 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.06 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.06 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.06 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.06 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.06 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.06 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.06 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.06 µg/L

Below Reporting Level

12/8/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

0.227 µg/L

⚠️ Exceeds Reporting Level of 0.06 µg/L by 0.167 µg/L

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

0.169 µg/L

⚠️ Exceeds Reporting Level of 0.06 µg/L by 0.109 µg/L

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

0.147 µg/L

⚠️ Exceeds Reporting Level of 0.06 µg/L by 0.087 µg/L

9/9/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

0.112 µg/L

⚠️ Exceeds Reporting Level of 0.06 µg/L by 0.052 µg/L

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.0971 µg/L

⚠️ Exceeds Reporting Level of 0.06 µg/L by 0.0371 µg/L

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.06 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.06 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.06 µg/L
Reference Level: ?

Contaminant Details

bromomethane (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

Butylated Hydroxyanisole (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/18/2018

6 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/18/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

12/18/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

chlorate (35)

6646 Hawkins Hill

Distribution System - SW ℹ️

160 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 140 µg/L

6/24/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

160 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 140 µg/L

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

141 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 121 µg/L

6/24/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<20 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

131 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 111 µg/L

3/17/2015

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

108 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 88 µg/L

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

104 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 84 µg/L

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

104 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 84 µg/L

3/17/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<20 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<20 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<20 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<20 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<20 µg/L

Below Reporting Level

3/17/2015

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

<20 µg/L

Below Reporting Level

3/17/2015

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

<20 µg/L

Below Reporting Level

3/17/2015

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

<20 µg/L

Below Reporting Level

3/17/2015

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

<20 µg/L

Below Reporting Level

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

105 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 85 µg/L

12/8/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

104 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 84 µg/L

12/8/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<20 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<20 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

163 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 143 µg/L

9/9/2014

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

30 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 10 µg/L

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

22.8 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 2.8 µg/L

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

22.8 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 2.8 µg/L

9/9/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 20 µg/L
Reference Level: ?

Contaminant Details

chlorodifluoromethane (HCFC-22) (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.08 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.08 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.08 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.08 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.08 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.08 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.08 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.08 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.08 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.08 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.08 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.08 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.08 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.08 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.08 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.08 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.08 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.08 µg/L
Reference Level: ?

Contaminant Details

chloromethane (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

chlorpyrifos (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

1/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: 2 µg/L

Contaminant Details

chromium (35)

6646 Hawkins Hill

Distribution System - SW ℹ️

42.4 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 42.2 µg/L

6/24/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

6/24/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

12/8/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

12/8/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

chromium-6 (35)

6646 Hawkins Hill

Distribution System - SW ℹ️

0.05 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.02 µg/L

6/24/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.0475 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0175 µg/L

6/24/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0374 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0074 µg/L

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

6/24/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.0637 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0337 µg/L

3/17/2015

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

0.062 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.032 µg/L

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.0613 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0313 µg/L

3/17/2015

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

0.0565 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0265 µg/L

3/17/2015

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

0.0496 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0196 µg/L

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.049 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.019 µg/L

3/17/2015

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

0.0439 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0139 µg/L

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

0.0417 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0117 µg/L

3/17/2015

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

0.0409 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0109 µg/L

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

0.0381 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0081 µg/L

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

0.0375 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0075 µg/L

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0357 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0057 µg/L

3/17/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

0.0318 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0018 µg/L

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.0602 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0302 µg/L

12/8/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.0421 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0121 µg/L

12/8/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.0356 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0056 µg/L

12/8/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

12/8/2014

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

0.051 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.021 µg/L

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.0486 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0186 µg/L

9/9/2014

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

0.0482 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0182 µg/L

9/9/2014

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

0.0479 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0179 µg/L

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.0474 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0174 µg/L

9/9/2014

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

0.0473 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0173 µg/L

9/9/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

0.0449 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0149 µg/L

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

0.0445 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0145 µg/L

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

0.0418 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0118 µg/L

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

0.0409 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0109 µg/L

9/9/2014

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

0.0405 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0105 µg/L

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

0.0381 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0081 µg/L

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0374 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0074 µg/L

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.0304 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0004 µg/L

9/9/2014

10 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

cobalt (35)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<1 µg/L

Below Reporting Level

6/24/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

6/24/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<1 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

<1 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<1 µg/L

Below Reporting Level

12/8/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

12/8/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<1 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

cylindrospermopsin (16)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

8/27/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

8/27/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

8/13/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

8/13/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

7/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

7/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

7/11/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

7/11/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

6/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

6/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

6/13/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

6/13/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

5/28/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

5/28/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

5/16/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

5/16/2019

6 years ago

Minimum Reporting Level: 0.09 µg/L
Reference Level: 0.7 µg/L

Contaminant Details

dimethipin (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

1/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.2 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.2 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: 140 µg/L

Contaminant Details

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (7)

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<1 µg/L

Below Reporting Level

11/14/2001

23 years ago

WALKER_ST

WALKER ST ℹ️

<1 µg/L

Below Reporting Level

11/14/2001

23 years ago

3RD_ST

3RD ST ℹ️

<1 µg/L

Below Reporting Level

11/14/2001

23 years ago

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<1 µg/L

Below Reporting Level

5/8/2001

24 years ago

WALKER_ST

WALKER ST ℹ️

<1 µg/L

Below Reporting Level

5/8/2001

24 years ago

GLEN_COVE_

GLEN COVE ℹ️

<1 µg/L

Below Reporting Level

5/8/2001

24 years ago

3RD_ST

3RD ST ℹ️

<1 µg/L

Below Reporting Level

5/8/2001

24 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

equilin (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.004 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.004 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.004 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.004 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.004 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

estriol (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0008 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0008 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.0008 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0008 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.0008 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.0008 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.0008 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0008 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0008 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0008 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.0008 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.0008 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0008 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.0008 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.0008 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.0008 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0008 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.0008 µg/L
Reference Level: ?

Contaminant Details

estrone (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.002 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.002 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.002 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.002 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.002 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.002 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.002 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.002 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.002 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.002 µg/L
Reference Level: ?

Contaminant Details

ethoprop (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

1/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: 1.14 µg/L

Contaminant Details

Germanium (12)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.3 µg/L

Below Reporting Level

12/18/2018

6 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.3 µg/L

Below Reporting Level

12/18/2018

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.3 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.3 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: ?

Contaminant Details

HAA5 (five regulated haloacetic acids) (32)

6007 Leafwood

Distribution System ℹ️

36.8 µg/L

⚠️ Exceeds 50% of Reference Level

4/25/2019

6 years ago

115 Chariss Glen

Distribution System ℹ️

32.3 µg/L

⚠️ Exceeds 50% of Reference Level

4/25/2019

6 years ago

South Shore Harbour Tank

Distribution System ℹ️

31.8 µg/L

⚠️ Exceeds 50% of Reference Level

4/25/2019

6 years ago

2002 Redwood

Distribution System ℹ️

21.47 µg/L

Meets Reporting Threshold

4/25/2019

6 years ago

1226 Birch Ct

Distribution System ℹ️

11.96 µg/L

Meets Reporting Threshold

4/25/2019

6 years ago

302 Willowpoint

Distribution System ℹ️

10.3 µg/L

Meets Reporting Threshold

4/25/2019

6 years ago

1553 Viejo Rd

Distribution System ℹ️

9.4 µg/L

Meets Reporting Threshold

4/25/2019

6 years ago

411 Indian Meadow

Distribution System ℹ️

8.3 µg/L

Meets Reporting Threshold

4/25/2019

6 years ago

South Shore Harbour Tank

Distribution System ℹ️

53.05 µg/L

❗ Exceeds 80% of Reference Level

1/23/2019

6 years ago

6007 Leafwood

Distribution System ℹ️

52.38 µg/L

❗ Exceeds 80% of Reference Level

1/23/2019

6 years ago

1226 Birch Ct

Distribution System ℹ️

52.27 µg/L

❗ Exceeds 80% of Reference Level

1/23/2019

6 years ago

115 Chariss Glen

Distribution System ℹ️

51.71 µg/L

❗ Exceeds 80% of Reference Level

1/23/2019

6 years ago

302 Willowpoint

Distribution System ℹ️

50.12 µg/L

❗ Exceeds 80% of Reference Level

1/23/2019

6 years ago

1553 Viejo Rd

Distribution System ℹ️

50.1 µg/L

❗ Exceeds 80% of Reference Level

1/23/2019

6 years ago

411 Indian Meadow

Distribution System ℹ️

49.32 µg/L

❗ Exceeds 80% of Reference Level

1/23/2019

6 years ago

2002 Redwood

Distribution System ℹ️

20.5 µg/L

Meets Reporting Threshold

1/23/2019

6 years ago

411 Indian Meadow

Distribution System ℹ️

27.32 µg/L

Meets Reporting Threshold

10/23/2018

6 years ago

302 Willowpoint

Distribution System ℹ️

27.3 µg/L

Meets Reporting Threshold

10/23/2018

6 years ago

South Shore Harbour Tank

Distribution System ℹ️

25.38 µg/L

Meets Reporting Threshold

10/23/2018

6 years ago

6007 Leafwood

Distribution System ℹ️

25.23 µg/L

Meets Reporting Threshold

10/23/2018

6 years ago

115 Chariss Glen

Distribution System ℹ️

25.12 µg/L

Meets Reporting Threshold

10/23/2018

6 years ago

1553 Viejo Rd

Distribution System ℹ️

25.01 µg/L

Meets Reporting Threshold

10/23/2018

6 years ago

1226 Birch Ct

Distribution System ℹ️

24.29 µg/L

Meets Reporting Threshold

10/23/2018

6 years ago

2002 Redwood

Distribution System ℹ️

11.3 µg/L

Meets Reporting Threshold

10/23/2018

6 years ago

302 Willowpoint

Distribution System ℹ️

59.52 µg/L

❗ Exceeds 80% of Reference Level

7/19/2018

7 years ago

6007 Leafwood

Distribution System ℹ️

59.51 µg/L

❗ Exceeds 80% of Reference Level

7/19/2018

7 years ago

411 Indian Meadow

Distribution System ℹ️

58.88 µg/L

❗ Exceeds 80% of Reference Level

7/19/2018

7 years ago

115 Chariss Glen

Distribution System ℹ️

58.05 µg/L

❗ Exceeds 80% of Reference Level

7/19/2018

7 years ago

South Shore Harbour Tank

Distribution System ℹ️

44.66 µg/L

⚠️ Exceeds 50% of Reference Level

7/19/2018

7 years ago

1226 Birch Ct

Distribution System ℹ️

41.17 µg/L

⚠️ Exceeds 50% of Reference Level

7/19/2018

7 years ago

1553 Viejo Rd

Distribution System ℹ️

21.77 µg/L

Meets Reporting Threshold

7/19/2018

7 years ago

2002 Redwood

Distribution System ℹ️

19.32 µg/L

Meets Reporting Threshold

7/19/2018

7 years ago

Minimum Reporting Level: 0.5 µg/L
Reference Level: 60 µg/L

Contaminant Details

HAA6Br (six brominated haloacetic acids) (32)

1553 Viejo Rd

Distribution System ℹ️

22.6 µg/L

4/25/2019

6 years ago

6007 Leafwood

Distribution System ℹ️

14.98 µg/L

4/25/2019

6 years ago

302 Willowpoint

Distribution System ℹ️

14.36 µg/L

4/25/2019

6 years ago

1226 Birch Ct

Distribution System ℹ️

13.95 µg/L

4/25/2019

6 years ago

411 Indian Meadow

Distribution System ℹ️

13.05 µg/L

4/25/2019

6 years ago

115 Chariss Glen

Distribution System ℹ️

13.03 µg/L

4/25/2019

6 years ago

South Shore Harbour Tank

Distribution System ℹ️

12.77 µg/L

4/25/2019

6 years ago

2002 Redwood

Distribution System ℹ️

9.41 µg/L

4/25/2019

6 years ago

1553 Viejo Rd

Distribution System ℹ️

15.6 µg/L

1/23/2019

6 years ago

6007 Leafwood

Distribution System ℹ️

7.18 µg/L

1/23/2019

6 years ago

South Shore Harbour Tank

Distribution System ℹ️

7.05 µg/L

1/23/2019

6 years ago

1226 Birch Ct

Distribution System ℹ️

6.87 µg/L

1/23/2019

6 years ago

302 Willowpoint

Distribution System ℹ️

6.72 µg/L

1/23/2019

6 years ago

115 Chariss Glen

Distribution System ℹ️

6.71 µg/L

1/23/2019

6 years ago

411 Indian Meadow

Distribution System ℹ️

6.52 µg/L

1/23/2019

6 years ago

2002 Redwood

Distribution System ℹ️

3.33 µg/L

1/23/2019

6 years ago

302 Willowpoint

Distribution System ℹ️

11.96 µg/L

10/23/2018

6 years ago

1226 Birch Ct

Distribution System ℹ️

11.64 µg/L

10/23/2018

6 years ago

1553 Viejo Rd

Distribution System ℹ️

11.62 µg/L

10/23/2018

6 years ago

6007 Leafwood

Distribution System ℹ️

11.51 µg/L

10/23/2018

6 years ago

411 Indian Meadow

Distribution System ℹ️

11.36 µg/L

10/23/2018

6 years ago

South Shore Harbour Tank

Distribution System ℹ️

11.24 µg/L

10/23/2018

6 years ago

115 Chariss Glen

Distribution System ℹ️

11.05 µg/L

10/23/2018

6 years ago

2002 Redwood

Distribution System ℹ️

5.37 µg/L

10/23/2018

6 years ago

1553 Viejo Rd

Distribution System ℹ️

19.27 µg/L

7/19/2018

7 years ago

411 Indian Meadow

Distribution System ℹ️

10.82 µg/L

7/19/2018

7 years ago

1226 Birch Ct

Distribution System ℹ️

10.32 µg/L

7/19/2018

7 years ago

6007 Leafwood

Distribution System ℹ️

10.17 µg/L

7/19/2018

7 years ago

South Shore Harbour Tank

Distribution System ℹ️

10.03 µg/L

7/19/2018

7 years ago

115 Chariss Glen

Distribution System ℹ️

9.58 µg/L

7/19/2018

7 years ago

302 Willowpoint

Distribution System ℹ️

8.67 µg/L

7/19/2018

7 years ago

2002 Redwood

Distribution System ℹ️

4.74 µg/L

7/19/2018

7 years ago

Minimum Reporting Level: 0 µg/L
Reference Level: ?

Contaminant Details

HAA9 (nine haloacetic acids) (32)

6007 Leafwood

Distribution System ℹ️

50.48 µg/L

4/25/2019

6 years ago

115 Chariss Glen

Distribution System ℹ️

44.23 µg/L

4/25/2019

6 years ago

South Shore Harbour Tank

Distribution System ℹ️

43.47 µg/L

4/25/2019

6 years ago

2002 Redwood

Distribution System ℹ️

30.11 µg/L

4/25/2019

6 years ago

1553 Viejo Rd

Distribution System ℹ️

27.8 µg/L

4/25/2019

6 years ago

1226 Birch Ct

Distribution System ℹ️

24.25 µg/L

4/25/2019

6 years ago

302 Willowpoint

Distribution System ℹ️

23.56 µg/L

4/25/2019

6 years ago

411 Indian Meadow

Distribution System ℹ️

20.25 µg/L

4/25/2019

6 years ago

1553 Viejo Rd

Distribution System ℹ️

64.2 µg/L

1/23/2019

6 years ago

South Shore Harbour Tank

Distribution System ℹ️

59.75 µg/L

1/23/2019

6 years ago

6007 Leafwood

Distribution System ℹ️

59.18 µg/L

1/23/2019

6 years ago

1226 Birch Ct

Distribution System ℹ️

58.77 µg/L

1/23/2019

6 years ago

115 Chariss Glen

Distribution System ℹ️

58.11 µg/L

1/23/2019

6 years ago

302 Willowpoint

Distribution System ℹ️

56.52 µg/L

1/23/2019

6 years ago

411 Indian Meadow

Distribution System ℹ️

55.52 µg/L

1/23/2019

6 years ago

2002 Redwood

Distribution System ℹ️

23.83 µg/L

1/23/2019

6 years ago

302 Willowpoint

Distribution System ℹ️

39.26 µg/L

10/23/2018

6 years ago

411 Indian Meadow

Distribution System ℹ️

38.26 µg/L

10/23/2018

6 years ago

6007 Leafwood

Distribution System ℹ️

36.41 µg/L

10/23/2018

6 years ago

South Shore Harbour Tank

Distribution System ℹ️

36.24 µg/L

10/23/2018

6 years ago

1553 Viejo Rd

Distribution System ℹ️

36.22 µg/L

10/23/2018

6 years ago

115 Chariss Glen

Distribution System ℹ️

35.85 µg/L

10/23/2018

6 years ago

1226 Birch Ct

Distribution System ℹ️

35.54 µg/L

10/23/2018

6 years ago

2002 Redwood

Distribution System ℹ️

16.67 µg/L

10/23/2018

6 years ago

6007 Leafwood

Distribution System ℹ️

68.87 µg/L

7/19/2018

7 years ago

411 Indian Meadow

Distribution System ℹ️

68.82 µg/L

7/19/2018

7 years ago

302 Willowpoint

Distribution System ℹ️

67.57 µg/L

7/19/2018

7 years ago

115 Chariss Glen

Distribution System ℹ️

66.78 µg/L

7/19/2018

7 years ago

South Shore Harbour Tank

Distribution System ℹ️

53.83 µg/L

7/19/2018

7 years ago

1226 Birch Ct

Distribution System ℹ️

50.72 µg/L

7/19/2018

7 years ago

1553 Viejo Rd

Distribution System ℹ️

35.77 µg/L

7/19/2018

7 years ago

2002 Redwood

Distribution System ℹ️

23.64 µg/L

7/19/2018

7 years ago

Minimum Reporting Level: 0 µg/L
Reference Level: ?

Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

lithium (6)

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

9.5 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 0.5 µg/L

3/24/2025

5 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<9 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Calder Plant ℹ️

15.5 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 6.5 µg/L

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

13.5 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 4.5 µg/L

12/11/2024

8 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

11.3 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 2.3 µg/L

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<9 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 9 µg/L
Reference Level: ?

Contaminant Details

Manganese (12)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

2.2 µg/L

Meets Reporting Threshold

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.4 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

3 µg/L

Meets Reporting Threshold

1/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

2.9 µg/L

Meets Reporting Threshold

1/23/2019

6 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

3.6 µg/L

Meets Reporting Threshold

12/18/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

2.3 µg/L

Meets Reporting Threshold

12/18/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

1.8 µg/L

Meets Reporting Threshold

10/23/2018

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

1.7 µg/L

Meets Reporting Threshold

10/23/2018

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

3.8 µg/L

Meets Reporting Threshold

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

2.6 µg/L

Meets Reporting Threshold

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

1.4 µg/L

Meets Reporting Threshold

7/19/2018

7 years ago

2690 Calder Rd.

Calder Plant ℹ️

0.98 µg/L

Meets Reporting Threshold

7/19/2018

7 years ago

Minimum Reporting Level: 0.4 µg/L
Reference Level: 300 µg/L

Contaminant Details

methyl-tertiary-butyl-ether (MTBE) (7)

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<5 µg/L

Below Reporting Level

11/14/2001

23 years ago

WALKER_ST

WALKER ST ℹ️

<5 µg/L

Below Reporting Level

11/14/2001

23 years ago

3RD_ST

3RD ST ℹ️

<5 µg/L

Below Reporting Level

11/14/2001

23 years ago

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<5 µg/L

Below Reporting Level

5/8/2001

24 years ago

WALKER_ST

WALKER ST ℹ️

<5 µg/L

Below Reporting Level

5/8/2001

24 years ago

GLEN_COVE_

GLEN COVE ℹ️

<5 µg/L

Below Reporting Level

5/8/2001

24 years ago

3RD_ST

3RD ST ℹ️

<5 µg/L

Below Reporting Level

5/8/2001

24 years ago

Minimum Reporting Level: 5 µg/L
Reference Level: ?

Contaminant Details

molinate (7)

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<0.9 µg/L

Below Reporting Level

11/14/2001

23 years ago

WALKER_ST

WALKER ST ℹ️

<0.9 µg/L

Below Reporting Level

11/14/2001

23 years ago

3RD_ST

3RD ST ℹ️

<0.9 µg/L

Below Reporting Level

11/14/2001

23 years ago

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<0.9 µg/L

Below Reporting Level

5/8/2001

24 years ago

WALKER_ST

WALKER ST ℹ️

<0.9 µg/L

Below Reporting Level

5/8/2001

24 years ago

GLEN_COVE_

GLEN COVE ℹ️

<0.9 µg/L

Below Reporting Level

5/8/2001

24 years ago

3RD_ST

3RD ST ℹ️

<0.9 µg/L

Below Reporting Level

5/8/2001

24 years ago

Minimum Reporting Level: 0.9 µg/L
Reference Level: ?

Contaminant Details

molybdenum (35)

6646 Hawkins Hill

Distribution System - SW ℹ️

1.56 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.56 µg/L

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

1.18 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.18 µg/L

6/24/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

1.14 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.14 µg/L

6/24/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

1.12 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.12 µg/L

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

1.77 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.77 µg/L

3/17/2015

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

1.72 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.72 µg/L

3/17/2015

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

1.63 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.63 µg/L

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

1.62 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.62 µg/L

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

1.59 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.59 µg/L

3/17/2015

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

1.55 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.55 µg/L

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

1.53 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.53 µg/L

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

1.49 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.49 µg/L

3/17/2015

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

1.49 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.49 µg/L

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

1.45 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.45 µg/L

3/17/2015

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

1.44 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.44 µg/L

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

1.36 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.36 µg/L

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

1.25 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.25 µg/L

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

2.2 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.2 µg/L

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

2.09 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.09 µg/L

12/8/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

1.93 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.93 µg/L

12/8/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

1.89 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.89 µg/L

12/8/2014

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

2.05 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.05 µg/L

9/9/2014

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

2.01 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.01 µg/L

9/9/2014

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

2.01 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.01 µg/L

9/9/2014

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

2.01 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.01 µg/L

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

2 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1 µg/L

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

2 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1 µg/L

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

2 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1 µg/L

9/9/2014

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

2 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1 µg/L

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

1.99 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.99 µg/L

9/9/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

1.98 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.98 µg/L

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

1.97 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.97 µg/L

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

1.97 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.97 µg/L

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

1.95 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.95 µg/L

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

1.94 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.94 µg/L

9/9/2014

10 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (4)

2690 Calder Rd.

Calder Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (4)

2690 Calder Rd.

Calder Plant ℹ️

<0.006 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.006 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.006 µg/L

Below Reporting Level

12/11/2024

8 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.006 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.006 µg/L
Reference Level: ?

Contaminant Details

nitrobenzene (7)

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<10 µg/L

Below Reporting Level

11/14/2001

23 years ago

WALKER_ST

WALKER ST ℹ️

<10 µg/L

Below Reporting Level

11/14/2001

23 years ago

3RD_ST

3RD ST ℹ️

<10 µg/L

Below Reporting Level

11/14/2001

23 years ago

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<10 µg/L

Below Reporting Level

5/8/2001

24 years ago

WALKER_ST

WALKER ST ℹ️

<10 µg/L

Below Reporting Level

5/8/2001

24 years ago

GLEN_COVE_

GLEN COVE ℹ️

<10 µg/L

Below Reporting Level

5/8/2001

24 years ago

3RD_ST

3RD ST ℹ️

<10 µg/L

Below Reporting Level

5/8/2001

24 years ago

Minimum Reporting Level: 10 µg/L
Reference Level: ?

Contaminant Details

nonafluoro-3,6-dioxaheptanoic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.02 µg/L
Reference Level: ?

Contaminant Details

o-toluidine (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.007 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.007 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.007 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.007 µg/L

Below Reporting Level

12/18/2018

6 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.007 µg/L

Below Reporting Level

12/18/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.007 µg/L

Below Reporting Level

12/18/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.007 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.007 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.007 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.007 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.007 µg/L
Reference Level: ?

Contaminant Details

oxyfluorfen (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.05 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.05 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.05 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.05 µg/L

Below Reporting Level

1/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.05 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.05 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.05 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.05 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.05 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.05 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.05 µg/L
Reference Level: 200 µg/L

Contaminant Details

perchlorate (7)

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<4 µg/L

Below Reporting Level

11/14/2001

23 years ago

WALKER_ST

WALKER ST ℹ️

<4 µg/L

Below Reporting Level

11/14/2001

23 years ago

3RD_ST

3RD ST ℹ️

<4 µg/L

Below Reporting Level

11/14/2001

23 years ago

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<4 µg/L

Below Reporting Level

5/8/2001

24 years ago

WALKER_ST

WALKER ST ℹ️

<4 µg/L

Below Reporting Level

5/8/2001

24 years ago

GLEN_COVE_

GLEN COVE ℹ️

<4 µg/L

Below Reporting Level

5/8/2001

24 years ago

3RD_ST

3RD ST ℹ️

<4 µg/L

Below Reporting Level

5/8/2001

24 years ago

Minimum Reporting Level: 4 µg/L
Reference Level: ?

Contaminant Details

perfluoro(2-ethoxyethane)sulfonic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluoro-3-methoxypropanoic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluoro-4-methoxybutanoic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorobutanesulfonic acid (23)

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.0031 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0001 µg/L

3/24/2025

5 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.0041 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0011 µg/L

1/8/2025

7 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0037 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0007 µg/L

12/11/2024

8 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.09 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.09 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.09 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.09 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.09 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.09 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.09 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.09 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.09 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.09 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorobutanoic acid (6)

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.0149 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0099 µg/L

3/24/2025

5 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.005 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.0319 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0269 µg/L

1/8/2025

7 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0112 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0062 µg/L

12/11/2024

8 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

perfluorodecanoic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorododecanoic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluoroheptanesulfonic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluoroheptanoic acid (23)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.01 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.01 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.01 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.01 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.01 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.01 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.01 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.01 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.01 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.01 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorohexanesulfonic acid (23)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0032 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0002 µg/L

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.003 µg/L

Below Reporting Level

1/8/2025

7 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0045 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0015 µg/L

12/11/2024

8 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorohexanoic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0043 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0013 µg/L

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.0036 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0006 µg/L

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.0052 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0022 µg/L

1/8/2025

7 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0071 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0041 µg/L

12/11/2024

8 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorononanoic acid (23)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluorooctanesulfonic acid (23)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

1/8/2025

7 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0048 µg/L

⚠️ Exceeds Reporting Level of 0.004 µg/L by 0.0008 µg/L

12/11/2024

8 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.04 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.04 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.04 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.04 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.04 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.04 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.04 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.04 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.04 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluorooctanoic acid (23)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluoropentanesulfonic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluoropentanoic acid (6)

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.0458 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0428 µg/L

3/24/2025

5 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0048 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0018 µg/L

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.102 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.099 µg/L

1/8/2025

7 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.0071 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0041 µg/L

12/11/2024

8 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorotetradecanoic acid (4)

2690 Calder Rd.

Calder Plant ℹ️

<0.008 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.008 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.008 µg/L

Below Reporting Level

12/11/2024

8 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.008 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.008 µg/L
Reference Level: ?

Contaminant Details

perfluorotridecanoic acid (4)

2690 Calder Rd.

Calder Plant ℹ️

<0.007 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.007 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.007 µg/L

Below Reporting Level

12/11/2024

8 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.007 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.007 µg/L
Reference Level: ?

Contaminant Details

perfluoroundecanoic acid (6)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

3/24/2025

5 months ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

1/8/2025

7 months ago

2690 Calder Rd.

Calder Plant ℹ️

<0.002 µg/L

Below Reporting Level

12/11/2024

8 months ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.002 µg/L

Below Reporting Level

12/11/2024

8 months ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.002 µg/L

Below Reporting Level

12/11/2024

8 months ago

Minimum Reporting Level: 0.002 µg/L
Reference Level: ?

Contaminant Details

profenofos (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

1/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.3 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.3 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: 0.3 µg/L

Contaminant Details

quinoline (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/18/2018

6 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/18/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

12/18/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.02 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.02 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.02 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.02 µg/L
Reference Level: 0.01 µg/L

Contaminant Details

s-ethyl-dipropylthiocarbamate (EPTC) (7)

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<1 µg/L

Below Reporting Level

11/14/2001

23 years ago

WALKER_ST

WALKER ST ℹ️

<1 µg/L

Below Reporting Level

11/14/2001

23 years ago

3RD_ST

3RD ST ℹ️

<1 µg/L

Below Reporting Level

11/14/2001

23 years ago

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<1 µg/L

Below Reporting Level

5/8/2001

24 years ago

WALKER_ST

WALKER ST ℹ️

<1 µg/L

Below Reporting Level

5/8/2001

24 years ago

GLEN_COVE_

GLEN COVE ℹ️

<1 µg/L

Below Reporting Level

5/8/2001

24 years ago

3RD_ST

3RD ST ℹ️

<1 µg/L

Below Reporting Level

5/8/2001

24 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

strontium (35)

6646 Hawkins Hill

Distribution System - SW ℹ️

335 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 334.7 µg/L

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

274 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 273.7 µg/L

6/24/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

264 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 263.7 µg/L

6/24/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

249 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 248.7 µg/L

6/24/2015

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

313 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 312.7 µg/L

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

308 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 307.7 µg/L

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

305 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 304.7 µg/L

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

295 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 294.7 µg/L

3/17/2015

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

279 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 278.7 µg/L

3/17/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

268 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 267.7 µg/L

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

263 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 262.7 µg/L

3/17/2015

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

261 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 260.7 µg/L

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

260 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 259.7 µg/L

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

255 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 254.7 µg/L

3/17/2015

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

253 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 252.7 µg/L

3/17/2015

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

252 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 251.7 µg/L

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

248 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 247.7 µg/L

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

443 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 442.7 µg/L

12/8/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

434 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 433.7 µg/L

12/8/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

320 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 319.7 µg/L

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

319 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 318.7 µg/L

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

406 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 405.7 µg/L

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

300 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 299.7 µg/L

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

299 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 298.7 µg/L

9/9/2014

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

297 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 296.7 µg/L

9/9/2014

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

297 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 296.7 µg/L

9/9/2014

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

292 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 291.7 µg/L

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

291 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 290.7 µg/L

9/9/2014

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

290 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 289.7 µg/L

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

289 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 288.7 µg/L

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

289 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 288.7 µg/L

9/9/2014

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

289 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 288.7 µg/L

9/9/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

284 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 283.7 µg/L

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

283 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 282.7 µg/L

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

278 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 277.7 µg/L

9/9/2014

10 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: ?

Contaminant Details

tebuconazole (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

1/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.2 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.2 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.2 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: 190 µg/L

Contaminant Details

terbacil (7)

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<2 µg/L

Below Reporting Level

11/14/2001

23 years ago

WALKER_ST

WALKER ST ℹ️

<2 µg/L

Below Reporting Level

11/14/2001

23 years ago

3RD_ST

3RD ST ℹ️

<2 µg/L

Below Reporting Level

11/14/2001

23 years ago

COUNTRY_SIDE

COUNTRY SIDE ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

WALKER_ST

WALKER ST ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

GLEN_COVE_

GLEN COVE ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

3RD_ST

3RD ST ℹ️

<2 µg/L

Below Reporting Level

5/8/2001

24 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: ?

Contaminant Details

testosterone (17)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0001 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0001 µg/L

Below Reporting Level

6/24/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.0001 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0001 µg/L

Below Reporting Level

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.0001 µg/L

Below Reporting Level

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.0001 µg/L

Below Reporting Level

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.0001 µg/L

Below Reporting Level

3/17/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0001 µg/L

Below Reporting Level

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0001 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0001 µg/L

Below Reporting Level

12/8/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.0001 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

<0.0001 µg/L

Below Reporting Level

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.0001 µg/L

Below Reporting Level

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

<0.0001 µg/L

Below Reporting Level

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

<0.0001 µg/L

Below Reporting Level

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.0001 µg/L

Below Reporting Level

9/9/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.0001 µg/L

Below Reporting Level

9/9/2014

10 years ago

Minimum Reporting Level: 0.0001 µg/L
Reference Level: ?

Contaminant Details

total microcystins (16)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

8/27/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

8/27/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

8/13/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

8/13/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

7/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

7/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

7/11/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

7/11/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

6/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

6/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

6/13/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

6/13/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

5/28/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

5/28/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

5/16/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.3 µg/L

Below Reporting Level

5/16/2019

6 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: ?

Contaminant Details

Total Permethrin (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

1/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.04 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.04 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.04 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.04 µg/L
Reference Level: 3.344 µg/L

Contaminant Details

tribufos (10)

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

4/25/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

4/25/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

1/23/2019

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

1/23/2019

6 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

10/23/2018

6 years ago

2690 Calder Rd.

Calder Plant ℹ️

<0.07 µg/L

Below Reporting Level

7/19/2018

7 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

7/19/2018

7 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

<0.07 µg/L

Below Reporting Level

7/19/2018

7 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

<0.07 µg/L

Below Reporting Level

7/19/2018

7 years ago

Minimum Reporting Level: 0.07 µg/L
Reference Level: 0.6 µg/L

Contaminant Details

vanadium (35)

6646 Hawkins Hill

Distribution System - SW ℹ️

2.19 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.99 µg/L

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

1.35 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.15 µg/L

6/24/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

1.21 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.01 µg/L

6/24/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.816 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.616 µg/L

6/24/2015

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.808 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.608 µg/L

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.775 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.575 µg/L

3/17/2015

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

0.732 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.532 µg/L

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.728 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.528 µg/L

3/17/2015

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

0.293 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.093 µg/L

3/17/2015

10 years ago

307 Windward Dr.

Bayridge ℹ️

0.267 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.067 µg/L

3/17/2015

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

0.255 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.055 µg/L

3/17/2015

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

0.252 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.052 µg/L

3/17/2015

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

0.245 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.045 µg/L

3/17/2015

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

0.244 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.044 µg/L

3/17/2015

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

0.244 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.044 µg/L

3/17/2015

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

0.227 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.027 µg/L

3/17/2015

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.218 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.018 µg/L

3/17/2015

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.998 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.798 µg/L

12/8/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.997 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.797 µg/L

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

0.272 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.072 µg/L

12/8/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.247 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.047 µg/L

12/8/2014

10 years ago

2690 Calder Rd.

Gulf Coast Water Intertie ℹ️

2.36 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.16 µg/L

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.84 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.64 µg/L

9/9/2014

10 years ago

6646 Hawkins Hill

Distribution System - SW ℹ️

0.816 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.616 µg/L

9/9/2014

10 years ago

2531 Sandvalley Way

Distribution System ℹ️

0.706 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.506 µg/L

9/9/2014

10 years ago

2116 Meadows Blvd

Distribution System ℹ️

0.671 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.471 µg/L

9/9/2014

10 years ago

2690 Calder Rd.

Calder Plant ℹ️

0.662 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.462 µg/L

9/9/2014

10 years ago

18530 Hwy. 3

Webster Pump Station ℹ️

0.662 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.462 µg/L

9/9/2014

10 years ago

2015 Pebble Beach Drive

Distribution System ℹ️

0.66 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.46 µg/L

9/9/2014

10 years ago

418 Coral Lilly Drive

Distribution System ℹ️

0.653 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.453 µg/L

9/9/2014

10 years ago

2819 Wood Hollow Dr.

Meadowbend ℹ️

0.649 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.449 µg/L

9/9/2014

10 years ago

307 Windward Dr.

Bayridge ℹ️

0.647 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.447 µg/L

9/9/2014

10 years ago

18530 Hwy 3- Webster Pump Station

Houston Water Intertie ℹ️

0.646 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.446 µg/L

9/9/2014

10 years ago

2600 FM 518

South Shore Harbor Plant ℹ️

0.643 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.443 µg/L

9/9/2014

10 years ago

3969 Pebble Brook Drive

Distribution System ℹ️

0.638 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.438 µg/L

9/9/2014

10 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

Sampling Facilities

Calder Plant
Ground Water (GW)

2690 Calder Rd.Entry Point to the Distribution System (EP)

Houston Water Intertie
Surface Water (SW)

18530 Hwy 3- Webster Pump StationEntry Point to the Distribution System (EP)

South Shore Harbor Plant
Ground Water (GW)

2600 FM 518Entry Point to the Distribution System (EP)

Gulf Coast Water Intertie
Surface Water (SW)

2690 Calder Rd.Entry Point to the Distribution System (EP)

Distribution System
Multiple Sources (MX)

302 WillowpointDistribution System (DS)

6007 LeafwoodDistribution System (DS)

411 Indian MeadowDistribution System (DS)

2002 RedwoodDistribution System (DS)

115 Chariss GlenDistribution System (DS)

1226 Birch CtDistribution System (DS)

1553 Viejo RdDistribution System (DS)

South Shore Harbour TankDistribution System (DS)

2116 Meadows BlvdMaximum Residence Time (MR)

418 Coral Lilly DriveMaximum Residence Time (MR)

3969 Pebble Brook DriveMaximum Residence Time (MR)

2015 Pebble Beach DriveMaximum Residence Time (MR)

2531 Sandvalley WayMaximum Residence Time (MR)

Webster Pump Station
Ground Water (GW)

18530 Hwy. 3Entry Point to the Distribution System (EP)

Meadowbend
Ground Water (GW)

2819 Wood Hollow Dr.Entry Point to the Distribution System (EP)

Bayridge
Ground Water (GW)

307 Windward Dr.Entry Point to the Distribution System (EP)

Distribution System - SW
Surface Water (SW)

6646 Hawkins HillMaximum Residence Time (MR)

COUNTRY SIDE
Ground Water (GW)

COUNTRY_SIDEEntry Point to the Distribution System (EP)

WALKER ST
Ground Water (GW)

WALKER_STEntry Point to the Distribution System (EP)

GLEN COVE
Ground Water (GW)

GLEN_COVE_Entry Point to the Distribution System (EP)

3RD ST
Ground Water (GW)

3RD_STEntry Point to the Distribution System (EP)

FAQ

Is City of League City tap water safe to drink?

When was City of League City last tested for water contamination?

The latest water samples were taken on March 24th, 2025.