Duncan (OK) Water Quality

Duncan is a large public water system in EPA region 6 that provides tap water for the 73533, 73534 zip codes. It has 6 facilities where the water supply was tested for 78 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 37.955 µg/L. The maximum reported level of Manganese was 4.39 µg/L. There were 2 contamintants found in the Duncan water supply at levels that were above the minimum reporting level.

Table of Contents
Contaminants
Facilities
FAQ

Contaminants

Jump To Contaminant
1,1-dichloroethane (4)
1,2,3-trichloropropane (4)
1,3-butadiene (4)
1,4-dioxane (4)
1-butanol (4)
11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (8)
1H,1H,2H,2H-perfluorodecane sulfonic acid (8)
1H,1H,2H,2H-perfluorohexane sulfonic acid (8)
1H,1H,2H,2H-perfluorooctane sulfonic acid (8)
2,4-dinitrotoluene (1)
2,6-dinitrotoluene (1)
2-methoxyethanol (4)
2-propen-1-ol (Allyl Alcohol) (4)
4,4'-dichloro dichlorophenyl ethylene (DDE) (1)
4,8-dioxa-3H-perfluorononanoic acid (8)
9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (8)
alpha-hexachlorocyclohexane (4)
anatoxin-a (8)
bromochloromethane (Halon 1011) (4)
bromomethane (4)
Butylated Hydroxyanisole (4)
chlorate (8)
chlorodifluoromethane (HCFC-22) (4)
chloromethane (4)
chlorpyrifos (4)
chromium (8)
chromium-6 (8)
cobalt (8)
cylindrospermopsin (8)
dimethipin (4)
dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (1)
ethoprop (4)
Germanium (4)
HAA5 (five regulated haloacetic acids) (16)
HAA6Br (six brominated haloacetic acids) (16)
HAA9 (nine haloacetic acids) (16)
hexafluoropropylene oxide dimer acid (GenX) (8)
lithium (8)
Manganese (4)
methyl-tertiary-butyl-ether (MTBE) (1)
molinate (1)
molybdenum (8)
N-ethyl perfluorooctanesulfonamidoacetic acid (8)
N-methyl perfluorooctanesulfonamidoacetic acid (8)
nitrobenzene (1)
nonafluoro-3,6-dioxaheptanoic acid (8)
o-toluidine (4)
oxyfluorfen (4)
perchlorate (1)
perfluoro(2-ethoxyethane)sulfonic acid (8)
perfluoro-3-methoxypropanoic acid (8)
perfluoro-4-methoxybutanoic acid (8)
perfluorobutanesulfonic acid (12)
perfluorobutanoic acid (8)
perfluorodecanoic acid (8)
perfluorododecanoic acid (8)
perfluoroheptanesulfonic acid (8)
perfluoroheptanoic acid (12)
perfluorohexanesulfonic acid (12)
perfluorohexanoic acid (8)
perfluorononanoic acid (12)
perfluorooctanesulfonic acid (12)
perfluorooctanoic acid (12)
perfluoropentanesulfonic acid (8)
perfluoropentanoic acid (8)
perfluorotetradecanoic acid (8)
perfluorotridecanoic acid (8)
perfluoroundecanoic acid (8)
profenofos (4)
quinoline (4)
s-ethyl-dipropylthiocarbamate (EPTC) (1)
strontium (8)
tebuconazole (4)
terbacil (1)
total microcystins (8)
Total Permethrin (4)
tribufos (4)
vanadium (8)

1,1-dichloroethane (4)

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

3/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

1,2,3-trichloropropane (4)

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

3/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

1,3-butadiene (4)

Water Plant EP

Water Treatment Plant ℹ️

<0.1 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.1 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.1 µg/L

Below Reporting Level

3/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.1 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

1,4-dioxane (4)

Water Plant EP

Water Treatment Plant ℹ️

<0.07 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.07 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.07 µg/L

Below Reporting Level

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.07 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

1-butanol (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<2 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<2 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<2 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<2 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

1H,1H,2H,2H-perfluorodecane sulfonic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

1H,1H,2H,2H-perfluorohexane sulfonic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

1H,1H,2H,2H-perfluorooctane sulfonic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

2,4-dinitrotoluene (1)

DUNCAN WTP UCM0001

DUNCAN WTP ℹ️

<2 µg/L

Below Reporting Level

8/27/2003

22 years ago

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

Contaminant Details

2,6-dinitrotoluene (1)

DUNCAN WTP UCM0001

DUNCAN WTP ℹ️

<2 µg/L

Below Reporting Level

8/27/2003

22 years ago

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

Contaminant Details

2-methoxyethanol (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.4 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.4 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.4 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.4 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

2-propen-1-ol (Allyl Alcohol) (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.5 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.5 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.5 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.5 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

4,4'-dichloro dichlorophenyl ethylene (DDE) (1)

DUNCAN WTP UCM0001

DUNCAN WTP ℹ️

<0.8 µg/L

Below Reporting Level

8/27/2003

22 years ago

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

Contaminant Details

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

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.002 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.002 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.002 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.002 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

alpha-hexachlorocyclohexane (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.01 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.01 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.01 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.01 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

anatoxin-a (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

8/20/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

8/5/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

7/22/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

7/8/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

6/17/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

5/20/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

5/5/2020

5 years ago

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

Contaminant Details

bromochloromethane (Halon 1011) (4)

Water Plant EP

Water Treatment Plant ℹ️

<0.06 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.06 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.06 µg/L

Below Reporting Level

3/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.06 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

bromomethane (4)

Water Plant EP

Water Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

3/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

Butylated Hydroxyanisole (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

chlorate (8)

Max. Res. Time in Dist. System

Distribution System ℹ️

<20 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<20 µg/L

Below Reporting Level

8/5/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

<20 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<20 µg/L

Below Reporting Level

5/6/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

<20 µg/L

Below Reporting Level

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<20 µg/L

Below Reporting Level

2/4/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

<20 µg/L

Below Reporting Level

11/5/2014

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<20 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

chlorodifluoromethane (HCFC-22) (4)

Water Plant EP

Water Treatment Plant ℹ️

<0.08 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.08 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.08 µg/L

Below Reporting Level

3/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.08 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

chloromethane (4)

Water Plant EP

Water Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

3/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

chlorpyrifos (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

chromium (8)

Max. Res. Time in Dist. System

Distribution System ℹ️

0.772 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.572 µg/L

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

0.318 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.118 µg/L

8/5/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

0.52 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.32 µg/L

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

0.449 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.249 µg/L

5/6/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

0.33 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.13 µg/L

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

0.214 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.014 µg/L

2/4/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

0.344 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.144 µg/L

11/5/2014

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

chromium-6 (8)

Max. Res. Time in Dist. System

Distribution System ℹ️

0.456 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.426 µg/L

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/5/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

0.2 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.17 µg/L

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

0.0721 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0421 µg/L

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

2/4/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

0.226 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.196 µg/L

11/5/2014

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

cobalt (8)

Max. Res. Time in Dist. System

Distribution System ℹ️

<1 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

8/5/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

<1 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

5/6/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

<1 µg/L

Below Reporting Level

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

2/4/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

<1 µg/L

Below Reporting Level

11/5/2014

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

cylindrospermopsin (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.09 µg/L

Below Reporting Level

8/20/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.09 µg/L

Below Reporting Level

8/5/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.09 µg/L

Below Reporting Level

7/22/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.09 µg/L

Below Reporting Level

7/8/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.09 µg/L

Below Reporting Level

6/17/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.09 µg/L

Below Reporting Level

6/3/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.09 µg/L

Below Reporting Level

5/20/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.09 µg/L

Below Reporting Level

5/5/2020

5 years ago

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

Contaminant Details

dimethipin (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.2 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.2 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.2 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.2 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (1)

DUNCAN WTP UCM0001

DUNCAN WTP ℹ️

<1 µg/L

Below Reporting Level

8/27/2003

22 years ago

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

Contaminant Details

ethoprop (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.03 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

Germanium (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

HAA5 (five regulated haloacetic acids) (16)

1911 Kingsbury

Duncan WTP ℹ️

14.185 µg/L

Meets Reporting Threshold

10/3/2018

6 years ago

2123 Flamingo

Duncan WTP ℹ️

7.618 µg/L

Meets Reporting Threshold

10/3/2018

6 years ago

1202 LaDoss

Duncan WTP ℹ️

6.566 µg/L

Meets Reporting Threshold

10/3/2018

6 years ago

Red River Vo-Tech

Duncan WTP ℹ️

3.348 µg/L

Meets Reporting Threshold

10/3/2018

6 years ago

1911 Kingsbury

Duncan WTP ℹ️

35.084 µg/L

⚠️ Exceeds 50% of Reference Level

7/11/2018

7 years ago

1202 LaDoss

Duncan WTP ℹ️

27.22 µg/L

Meets Reporting Threshold

7/11/2018

7 years ago

Red River Vo-Tech

Duncan WTP ℹ️

17.604 µg/L

Meets Reporting Threshold

7/11/2018

7 years ago

2123 Flamingo

Duncan WTP ℹ️

4.153 µg/L

Meets Reporting Threshold

7/11/2018

7 years ago

1911 Kingsbury

Duncan WTP ℹ️

37.955 µg/L

⚠️ Exceeds 50% of Reference Level

4/10/2018

7 years ago

1202 LaDoss

Duncan WTP ℹ️

36.199 µg/L

⚠️ Exceeds 50% of Reference Level

4/10/2018

7 years ago

Red River Vo-Tech

Duncan WTP ℹ️

32.676 µg/L

⚠️ Exceeds 50% of Reference Level

4/10/2018

7 years ago

2123 Flamingo

Duncan WTP ℹ️

15.173 µg/L

Meets Reporting Threshold

4/10/2018

7 years ago

1202 LaDoss

Duncan WTP ℹ️

28.62 µg/L

Meets Reporting Threshold

1/9/2018

7 years ago

Red River Vo-Tech

Duncan WTP ℹ️

28.49 µg/L

Meets Reporting Threshold

1/9/2018

7 years ago

1911 Kingsbury

Duncan WTP ℹ️

20.31 µg/L

Meets Reporting Threshold

1/9/2018

7 years ago

2123 Flamingo

Duncan WTP ℹ️

19.31 µg/L

Meets Reporting Threshold

1/9/2018

7 years ago

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

Contaminant Details

HAA6Br (six brominated haloacetic acids) (16)

1911 Kingsbury

Duncan WTP ℹ️

19.257 µg/L

10/3/2018

6 years ago

2123 Flamingo

Duncan WTP ℹ️

9.452 µg/L

10/3/2018

6 years ago

1202 LaDoss

Duncan WTP ℹ️

7.085 µg/L

10/3/2018

6 years ago

Red River Vo-Tech

Duncan WTP ℹ️

5.977 µg/L

10/3/2018

6 years ago

1911 Kingsbury

Duncan WTP ℹ️

52.979 µg/L

7/11/2018

7 years ago

1202 LaDoss

Duncan WTP ℹ️

35.25 µg/L

7/11/2018

7 years ago

Red River Vo-Tech

Duncan WTP ℹ️

25.87 µg/L

7/11/2018

7 years ago

2123 Flamingo

Duncan WTP ℹ️

4.741 µg/L

7/11/2018

7 years ago

1911 Kingsbury

Duncan WTP ℹ️

51.105 µg/L

4/10/2018

7 years ago

1202 LaDoss

Duncan WTP ℹ️

46.698 µg/L

4/10/2018

7 years ago

Red River Vo-Tech

Duncan WTP ℹ️

46.471 µg/L

4/10/2018

7 years ago

2123 Flamingo

Duncan WTP ℹ️

21.652 µg/L

4/10/2018

7 years ago

Red River Vo-Tech

Duncan WTP ℹ️

47.45 µg/L

1/9/2018

7 years ago

1202 LaDoss

Duncan WTP ℹ️

47.14 µg/L

1/9/2018

7 years ago

1911 Kingsbury

Duncan WTP ℹ️

35.62 µg/L

1/9/2018

7 years ago

2123 Flamingo

Duncan WTP ℹ️

32.18 µg/L

1/9/2018

7 years ago

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

Contaminant Details

HAA9 (nine haloacetic acids) (16)

1911 Kingsbury

Duncan WTP ℹ️

31.029 µg/L

10/3/2018

6 years ago

2123 Flamingo

Duncan WTP ℹ️

15.446 µg/L

10/3/2018

6 years ago

1202 LaDoss

Duncan WTP ℹ️

11.865 µg/L

10/3/2018

6 years ago

Red River Vo-Tech

Duncan WTP ℹ️

7.258 µg/L

10/3/2018

6 years ago

1911 Kingsbury

Duncan WTP ℹ️

76.506 µg/L

7/11/2018

7 years ago

1202 LaDoss

Duncan WTP ℹ️

55.131 µg/L

7/11/2018

7 years ago

Red River Vo-Tech

Duncan WTP ℹ️

39.873 µg/L

7/11/2018

7 years ago

2123 Flamingo

Duncan WTP ℹ️

7.707 µg/L

7/11/2018

7 years ago

1911 Kingsbury

Duncan WTP ℹ️

80.251 µg/L

4/10/2018

7 years ago

1202 LaDoss

Duncan WTP ℹ️

74.904 µg/L

4/10/2018

7 years ago

Red River Vo-Tech

Duncan WTP ℹ️

71.763 µg/L

4/10/2018

7 years ago

2123 Flamingo

Duncan WTP ℹ️

34.255 µg/L

4/10/2018

7 years ago

Red River Vo-Tech

Duncan WTP ℹ️

67.91 µg/L

1/9/2018

7 years ago

1202 LaDoss

Duncan WTP ℹ️

67.83 µg/L

1/9/2018

7 years ago

1911 Kingsbury

Duncan WTP ℹ️

51.5 µg/L

1/9/2018

7 years ago

2123 Flamingo

Duncan WTP ℹ️

47.26 µg/L

1/9/2018

7 years ago

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

Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

lithium (8)

Distribution

Duncan Water Treatment Plant ℹ️

11.3 µg/L

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

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

11.2 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 2.2 µg/L

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

14.1 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 5.1 µg/L

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

14 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 5 µg/L

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

14.2 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 5.2 µg/L

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

13.9 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 4.9 µg/L

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

12.7 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 3.7 µg/L

10/3/2023

23 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

11.6 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 2.6 µg/L

10/3/2023

23 months ago

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

Contaminant Details

Manganese (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

0.557 µg/L

Meets Reporting Threshold

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

2.81 µg/L

Meets Reporting Threshold

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

4.39 µg/L

Meets Reporting Threshold

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

1.05 µg/L

Meets Reporting Threshold

1/9/2018

7 years ago

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

Contaminant Details

methyl-tertiary-butyl-ether (MTBE) (1)

DUNCAN WTP UCM0001

DUNCAN WTP ℹ️

<5 µg/L

Below Reporting Level

8/27/2003

22 years ago

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

Contaminant Details

molinate (1)

DUNCAN WTP UCM0001

DUNCAN WTP ℹ️

<0.9 µg/L

Below Reporting Level

8/27/2003

22 years ago

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

Contaminant Details

molybdenum (8)

Water Plant EP

Water Treatment Plant ℹ️

1.09 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.09 µg/L

8/5/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

1.08 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.08 µg/L

8/5/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

1.86 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.86 µg/L

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

1.68 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.68 µg/L

5/6/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

2.02 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.02 µg/L

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

1.64 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.64 µg/L

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

2.5 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.5 µg/L

11/5/2014

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

2.26 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.26 µg/L

11/5/2014

10 years ago

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

Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.006 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.006 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.006 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.006 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.006 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.006 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.006 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.006 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

nitrobenzene (1)

DUNCAN WTP UCM0001

DUNCAN WTP ℹ️

<10 µg/L

Below Reporting Level

8/27/2003

22 years ago

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

Contaminant Details

nonafluoro-3,6-dioxaheptanoic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.02 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.02 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.02 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.02 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

o-toluidine (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.007 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.007 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.007 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.007 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

oxyfluorfen (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.05 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.05 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.05 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.05 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

perchlorate (1)

DUNCAN WTP UCM0001

DUNCAN WTP ℹ️

<4 µg/L

Below Reporting Level

8/27/2003

22 years ago

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

Contaminant Details

perfluoro(2-ethoxyethane)sulfonic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

perfluoro-3-methoxypropanoic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

perfluoro-4-methoxybutanoic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

perfluorobutanesulfonic acid (12)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Water Plant EP

Water Treatment Plant ℹ️

<0.09 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.09 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.09 µg/L

Below Reporting Level

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.09 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

perfluorobutanoic acid (8)

Distribution

Duncan Water Treatment Plant ℹ️

0.005 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0 µg/L

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.005 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

0.0075 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0025 µg/L

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

0.0075 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0025 µg/L

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

0.0062 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0012 µg/L

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

0.0059 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0009 µg/L

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

0.0058 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0008 µg/L

10/3/2023

23 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

0.0056 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0006 µg/L

10/3/2023

23 months ago

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

Contaminant Details

perfluorodecanoic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

perfluorododecanoic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

perfluoroheptanesulfonic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

perfluoroheptanoic acid (12)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

0.0031 µg/L

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

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

0.0034 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0004 µg/L

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

0.0033 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0003 µg/L

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Water Plant EP

Water Treatment Plant ℹ️

<0.01 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.01 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.01 µg/L

Below Reporting Level

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.01 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

perfluorohexanesulfonic acid (12)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

perfluorohexanoic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

0.0033 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0003 µg/L

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

0.003 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0 µg/L

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

perfluorononanoic acid (12)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

10/3/2023

23 months ago

Water Plant EP

Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

perfluorooctanesulfonic acid (12)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

10/3/2023

23 months ago

Water Plant EP

Water Treatment Plant ℹ️

<0.04 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.04 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.04 µg/L

Below Reporting Level

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.04 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

perfluorooctanoic acid (12)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

10/3/2023

23 months ago

Water Plant EP

Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

11/5/2014

10 years ago

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

Contaminant Details

perfluoropentanesulfonic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.004 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

perfluoropentanoic acid (8)

Distribution

Duncan Water Treatment Plant ℹ️

0.0037 µg/L

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

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

0.0031 µg/L

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

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

0.0038 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0008 µg/L

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

0.0037 µg/L

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

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

0.0032 µg/L

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

10/3/2023

23 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.003 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

perfluorotetradecanoic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.008 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.008 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.008 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.008 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.008 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.008 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.008 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.008 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

perfluorotridecanoic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.007 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.007 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.007 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.007 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.007 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.007 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.007 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.007 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

perfluoroundecanoic acid (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.002 µg/L

Below Reporting Level

7/10/2024

14 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

7/10/2024

14 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.002 µg/L

Below Reporting Level

4/2/2024

17 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

4/2/2024

17 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.002 µg/L

Below Reporting Level

1/10/2024

20 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

1/10/2024

20 months ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.002 µg/L

Below Reporting Level

10/3/2023

23 months ago

Distribution

Duncan Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

10/3/2023

23 months ago

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

Contaminant Details

profenofos (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

quinoline (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.02 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.02 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.02 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.02 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

s-ethyl-dipropylthiocarbamate (EPTC) (1)

DUNCAN WTP UCM0001

DUNCAN WTP ℹ️

<1 µg/L

Below Reporting Level

8/27/2003

22 years ago

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

Contaminant Details

strontium (8)

Max. Res. Time in Dist. System

Distribution System ℹ️

441 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 440.7 µg/L

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

423 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 422.7 µg/L

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

903 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 902.7 µg/L

5/6/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

900 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 899.7 µg/L

5/6/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

793 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 792.7 µg/L

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

651 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 650.7 µg/L

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

890 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 889.7 µg/L

11/5/2014

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

870 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 869.7 µg/L

11/5/2014

10 years ago

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

Contaminant Details

tebuconazole (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.2 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.2 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.2 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.2 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

terbacil (1)

DUNCAN WTP UCM0001

DUNCAN WTP ℹ️

<2 µg/L

Below Reporting Level

8/27/2003

22 years ago

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

Contaminant Details

total microcystins (8)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

8/20/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

8/5/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

7/22/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

7/8/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

6/17/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

6/3/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

5/20/2020

5 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.3 µg/L

Below Reporting Level

5/5/2020

5 years ago

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

Contaminant Details

Total Permethrin (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.04 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.04 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.04 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.04 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

tribufos (4)

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.07 µg/L

Below Reporting Level

10/3/2018

6 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.07 µg/L

Below Reporting Level

7/11/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.07 µg/L

Below Reporting Level

4/10/2018

7 years ago

Entry to Distribution after Treatment

Duncan WTP ℹ️

<0.07 µg/L

Below Reporting Level

1/9/2018

7 years ago

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

Contaminant Details

vanadium (8)

Max. Res. Time in Dist. System

Distribution System ℹ️

3.68 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 3.48 µg/L

8/5/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

2.62 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.42 µg/L

8/5/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

2.27 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.07 µg/L

5/6/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

1.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.7 µg/L

5/6/2015

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

2.17 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.97 µg/L

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

1.43 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.23 µg/L

2/4/2015

10 years ago

Water Plant EP

Water Treatment Plant ℹ️

4.39 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4.19 µg/L

11/5/2014

10 years ago

Max. Res. Time in Dist. System

Distribution System ℹ️

2.62 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.42 µg/L

11/5/2014

10 years ago

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

Contaminant Details

Sampling Facilities

Duncan WTP
Surface Water (SW)

Entry to Distribution after TreatmentEntry Point to the Distribution System (EP)

Duncan Water Treatment Plant
Surface Water (SW)

DistributionEntry Point to the Distribution System (EP)

Duncan WTP
Surface Water (SW)

Red River Vo-TechDistribution System (DS)

1202 LaDossDistribution System (DS)

1911 KingsburyDistribution System (DS)

2123 FlamingoDistribution System (DS)

Distribution System
Surface Water (SW)

Max. Res. Time in Dist. SystemMaximum Residence Time (MR)

Water Treatment Plant
Surface Water (SW)

Water Plant EPEntry Point to the Distribution System (EP)

DUNCAN WTP
Surface Water (SW)

DUNCAN WTP UCM0001Entry Point to the Distribution System (EP)

FAQ

Is Duncan tap water safe to drink?

When was Duncan last tested for water contamination?

The latest water samples were taken on July 10th, 2024.