City of La Marque (TX) Water Quality

City of La Marque is a large public water system in EPA region 6 that provides tap water for the 77568 zip codes. It has 5 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 21.714 µg/L. The maximum reported level of Manganese was 0.4 µg/L. There were 2 contamintants found in the City of La Marque water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (4)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
8/12/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

1,2,3-trichloropropane (4)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
8/12/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

1,3-butadiene (4)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.1 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.1 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.1 µg/L
Below Reporting Level
8/12/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.1 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.1 µg/L
Reference Level: ?
Contaminant Details

1,4-dioxane (4)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
111.4%
0.078 µg/L
⚠️ Exceeds Reporting Level of 0.07 µg/L by 0.008 µg/L
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.07 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.07 µg/L
Below Reporting Level
8/12/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.07 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.07 µg/L
Reference Level: ?
Contaminant Details

1-butanol (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<2 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<2 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<2 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 2 µg/L
Reference Level: 700 µg/L
Contaminant Details

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

1H,1H,2H,2H-perfluorodecane sulfonic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

1H,1H,2H,2H-perfluorohexane sulfonic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

1H,1H,2H,2H-perfluorooctane sulfonic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

2,4-dinitrotoluene (2)

ℹ️
0%
<2 µg/L
Below Reporting Level
11/14/2001
23 years ago
ℹ️
0%
<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 (2)

ℹ️
0%
<2 µg/L
Below Reporting Level
11/14/2001
23 years ago
ℹ️
0%
<2 µg/L
Below Reporting Level
5/8/2001
24 years ago
Minimum Reporting Level: 2 µg/L
Reference Level: ?
Contaminant Details

2-methoxyethanol (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.4 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.4 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.4 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.4 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.4 µg/L
Reference Level: 21 µg/L
Contaminant Details

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

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.5 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.5 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.5 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.5 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.5 µg/L
Reference Level: 35 µg/L
Contaminant Details

4,4'-dichloro dichlorophenyl ethylene (DDE) (2)

ℹ️
0%
<0.8 µg/L
Below Reporting Level
11/14/2001
23 years ago
ℹ️
0%
<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 (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.002 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.002 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.002 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.002 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.002 µg/L
Reference Level: ?
Contaminant Details

alpha-hexachlorocyclohexane (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.01 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.01 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.01 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.01 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.01 µg/L
Reference Level: 0.006 µg/L
Contaminant Details

anatoxin-a (6)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
7/13/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
6/16/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
6/3/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/18/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
4/28/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
4/9/2020
5 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

bromochloromethane (Halon 1011) (4)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.06 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.06 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.06 µg/L
Below Reporting Level
8/12/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.06 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.06 µg/L
Reference Level: ?
Contaminant Details

bromomethane (4)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
8/12/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

Butylated Hydroxyanisole (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

chlorate (8)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
600%
120 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 100 µg/L
3/2/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
600%
120 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 100 µg/L
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
500%
100 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 80 µg/L
11/20/2014
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
500%
100 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 80 µg/L
11/20/2014
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
1050%
210 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 190 µg/L
8/12/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
950%
190 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 170 µg/L
8/12/2014
11 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
800%
160 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 140 µg/L
5/20/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
700%
140 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 120 µg/L
5/20/2014
11 years ago
Minimum Reporting Level: 20 µg/L
Reference Level: ?
Contaminant Details

chlorodifluoromethane (HCFC-22) (4)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.08 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.08 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.08 µg/L
Below Reporting Level
8/12/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.08 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.08 µg/L
Reference Level: ?
Contaminant Details

chloromethane (4)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
8/12/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

chlorpyrifos (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: 2 µg/L
Contaminant Details

chromium (8)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/12/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/12/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
3/2/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
0%
<0.2 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
2/9/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
0%
<0.2 µg/L
Below Reporting Level
2/9/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/20/2014
11 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

chromium-6 (8)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
153.3%
0.046 µg/L
⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.016 µg/L
3/2/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
136.7%
0.041 µg/L
⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.011 µg/L
3/2/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
130%
0.039 µg/L
⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.009 µg/L
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
110%
0.033 µg/L
⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.003 µg/L
11/20/2014
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
133.3%
0.04 µg/L
⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.01 µg/L
8/12/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
8/12/2014
11 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
106.7%
0.032 µg/L
⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.002 µg/L
5/20/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

cobalt (8)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<1 µg/L
Below Reporting Level
5/12/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
0%
<1 µg/L
Below Reporting Level
5/12/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<1 µg/L
Below Reporting Level
3/2/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
0%
<1 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<1 µg/L
Below Reporting Level
2/9/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
0%
<1 µg/L
Below Reporting Level
2/9/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2014
11 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

cylindrospermopsin (6)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.09 µg/L
Below Reporting Level
7/13/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.09 µg/L
Below Reporting Level
6/16/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.09 µg/L
Below Reporting Level
6/3/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.09 µg/L
Below Reporting Level
5/18/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.09 µg/L
Below Reporting Level
4/28/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.09 µg/L
Below Reporting Level
4/9/2020
5 years ago
Minimum Reporting Level: 0.09 µg/L
Reference Level: 0.7 µg/L
Contaminant Details

dimethipin (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: 140 µg/L
Contaminant Details

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (2)

ℹ️
0%
<1 µg/L
Below Reporting Level
11/14/2001
23 years ago
ℹ️
0%
<1 µg/L
Below Reporting Level
5/8/2001
24 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

ethoprop (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: 1.14 µg/L
Contaminant Details

Germanium (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.3 µg/L
Reference Level: ?
Contaminant Details

HAA5 (five regulated haloacetic acids) (16)

603 W. Wood Circle
Distribution System ℹ️
15.6%
9.388 µg/L
Meets Reporting Threshold
11/12/2020
4 years ago
1210 Foreman Street
Distribution System ℹ️
14.3%
8.564 µg/L
Meets Reporting Threshold
11/12/2020
4 years ago
2309 Clark
Distribution System ℹ️
10.3%
6.162 µg/L
Meets Reporting Threshold
11/12/2020
4 years ago
4300 Kirby Drive
Distribution System ℹ️
9%
5.389 µg/L
Meets Reporting Threshold
11/12/2020
4 years ago
2309 Clark
Distribution System ℹ️
36.2%
21.714 µg/L
Meets Reporting Threshold
8/4/2020
5 years ago
4300 Kirby Drive
Distribution System ℹ️
28.4%
17.048 µg/L
Meets Reporting Threshold
8/4/2020
5 years ago
1210 Foreman Street
Distribution System ℹ️
27.9%
16.73 µg/L
Meets Reporting Threshold
8/4/2020
5 years ago
603 W. Wood Circle
Distribution System ℹ️
26.2%
15.726 µg/L
Meets Reporting Threshold
8/4/2020
5 years ago
603 W. Wood Circle
Distribution System ℹ️
22.8%
13.66 µg/L
Meets Reporting Threshold
5/19/2020
5 years ago
1210 Foreman Street
Distribution System ℹ️
20.3%
12.2 µg/L
Meets Reporting Threshold
5/19/2020
5 years ago
4300 Kirby Drive
Distribution System ℹ️
19.8%
11.877 µg/L
Meets Reporting Threshold
5/19/2020
5 years ago
2309 Clark
Distribution System ℹ️
17.9%
10.734 µg/L
Meets Reporting Threshold
5/19/2020
5 years ago
1210 Foreman Street
Distribution System ℹ️
16.9%
10.16 µg/L
Meets Reporting Threshold
2/19/2020
5 years ago
2309 Clark
Distribution System ℹ️
16.8%
10.08 µg/L
Meets Reporting Threshold
2/19/2020
5 years ago
603 W. Wood Circle
Distribution System ℹ️
16.7%
10.04 µg/L
Meets Reporting Threshold
2/19/2020
5 years ago
4300 Kirby Drive
Distribution System ℹ️
16.6%
9.93 µg/L
Meets Reporting Threshold
2/19/2020
5 years ago
Minimum Reporting Level: 0.5 µg/L
Reference Level: 60 µg/L
Contaminant Details

HAA6Br (six brominated haloacetic acids) (16)

1210 Foreman Street
Distribution System ℹ️
0%
26.26 µg/L
11/12/2020
4 years ago
603 W. Wood Circle
Distribution System ℹ️
0%
24.67 µg/L
11/12/2020
4 years ago
2309 Clark
Distribution System ℹ️
0%
22.362 µg/L
11/12/2020
4 years ago
4300 Kirby Drive
Distribution System ℹ️
0%
19.934 µg/L
11/12/2020
4 years ago
2309 Clark
Distribution System ℹ️
0%
24.794 µg/L
8/4/2020
5 years ago
4300 Kirby Drive
Distribution System ℹ️
0%
23.638 µg/L
8/4/2020
5 years ago
1210 Foreman Street
Distribution System ℹ️
0%
22.65 µg/L
8/4/2020
5 years ago
603 W. Wood Circle
Distribution System ℹ️
0%
20.146 µg/L
8/4/2020
5 years ago
603 W. Wood Circle
Distribution System ℹ️
0%
28.99 µg/L
5/19/2020
5 years ago
1210 Foreman Street
Distribution System ℹ️
0%
27.1 µg/L
5/19/2020
5 years ago
4300 Kirby Drive
Distribution System ℹ️
0%
22.787 µg/L
5/19/2020
5 years ago
2309 Clark
Distribution System ℹ️
0%
18.054 µg/L
5/19/2020
5 years ago
1210 Foreman Street
Distribution System ℹ️
0%
20.2 µg/L
2/19/2020
5 years ago
2309 Clark
Distribution System ℹ️
0%
20.09 µg/L
2/19/2020
5 years ago
4300 Kirby Drive
Distribution System ℹ️
0%
19.52 µg/L
2/19/2020
5 years ago
603 W. Wood Circle
Distribution System ℹ️
0%
19.24 µg/L
2/19/2020
5 years ago
Minimum Reporting Level: 0 µg/L
Reference Level: ?
Contaminant Details

HAA9 (nine haloacetic acids) (16)

1210 Foreman Street
Distribution System ℹ️
0%
28.854 µg/L
11/12/2020
4 years ago
603 W. Wood Circle
Distribution System ℹ️
0%
27.248 µg/L
11/12/2020
4 years ago
2309 Clark
Distribution System ℹ️
0%
24.672 µg/L
11/12/2020
4 years ago
4300 Kirby Drive
Distribution System ℹ️
0%
22.049 µg/L
11/12/2020
4 years ago
2309 Clark
Distribution System ℹ️
0%
39.954 µg/L
8/4/2020
5 years ago
4300 Kirby Drive
Distribution System ℹ️
0%
34.498 µg/L
8/4/2020
5 years ago
1210 Foreman Street
Distribution System ℹ️
0%
34 µg/L
8/4/2020
5 years ago
603 W. Wood Circle
Distribution System ℹ️
0%
30.476 µg/L
8/4/2020
5 years ago
603 W. Wood Circle
Distribution System ℹ️
0%
36.07 µg/L
5/19/2020
5 years ago
1210 Foreman Street
Distribution System ℹ️
0%
33.21 µg/L
5/19/2020
5 years ago
4300 Kirby Drive
Distribution System ℹ️
0%
28.977 µg/L
5/19/2020
5 years ago
2309 Clark
Distribution System ℹ️
0%
23.794 µg/L
5/19/2020
5 years ago
1210 Foreman Street
Distribution System ℹ️
0%
24.22 µg/L
2/19/2020
5 years ago
2309 Clark
Distribution System ℹ️
0%
24.01 µg/L
2/19/2020
5 years ago
4300 Kirby Drive
Distribution System ℹ️
0%
23.39 µg/L
2/19/2020
5 years ago
603 W. Wood Circle
Distribution System ℹ️
0%
23.22 µg/L
2/19/2020
5 years ago
Minimum Reporting Level: 0 µg/L
Reference Level: ?
Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

lithium (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
148.9%
13.4 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 4.4 µg/L
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
180%
16.2 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 7.2 µg/L
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
120%
10.8 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 1.8 µg/L
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<9 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 9 µg/L
Reference Level: ?
Contaminant Details

Manganese (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0.1%
0.4 µg/L
Meets Reporting Threshold
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.4 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.4 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0.1%
0.4 µg/L
Meets Reporting Threshold
2/19/2020
5 years ago
Minimum Reporting Level: 0.4 µg/L
Reference Level: 300 µg/L
Contaminant Details

methyl-tertiary-butyl-ether (MTBE) (2)

ℹ️
0%
<5 µg/L
Below Reporting Level
11/14/2001
23 years ago
ℹ️
0%
<5 µg/L
Below Reporting Level
5/8/2001
24 years ago
Minimum Reporting Level: 5 µg/L
Reference Level: ?
Contaminant Details

molinate (2)

ℹ️
0%
<0.9 µg/L
Below Reporting Level
11/14/2001
23 years ago
ℹ️
0%
<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 (8)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
130%
1.3 µg/L
⚠️ Exceeds Reporting Level of 1 µg/L by 0.3 µg/L
5/12/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
120%
1.2 µg/L
⚠️ Exceeds Reporting Level of 1 µg/L by 0.2 µg/L
5/12/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
130%
1.3 µg/L
⚠️ Exceeds Reporting Level of 1 µg/L by 0.3 µg/L
3/2/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
130%
1.3 µg/L
⚠️ Exceeds Reporting Level of 1 µg/L by 0.3 µg/L
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
140%
1.4 µg/L
⚠️ Exceeds Reporting Level of 1 µg/L by 0.4 µg/L
2/9/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
140%
1.4 µg/L
⚠️ Exceeds Reporting Level of 1 µg/L by 0.4 µg/L
2/9/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
240%
2.4 µg/L
⚠️ Exceeds Reporting Level of 1 µg/L by 1.4 µg/L
5/20/2014
11 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
240%
2.4 µg/L
⚠️ Exceeds Reporting Level of 1 µg/L by 1.4 µg/L
5/20/2014
11 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.006 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.006 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.006 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.006 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.006 µg/L
Reference Level: ?
Contaminant Details

nitrobenzene (2)

ℹ️
0%
<10 µg/L
Below Reporting Level
11/14/2001
23 years ago
ℹ️
0%
<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 (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.02 µg/L
Reference Level: ?
Contaminant Details

o-toluidine (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.007 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.007 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.007 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.007 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.007 µg/L
Reference Level: ?
Contaminant Details

oxyfluorfen (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.05 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.05 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.05 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.05 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.05 µg/L
Reference Level: 200 µg/L
Contaminant Details

perchlorate (2)

ℹ️
0%
<4 µg/L
Below Reporting Level
11/14/2001
23 years ago
ℹ️
0%
<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 (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluoro-3-methoxypropanoic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluoro-4-methoxybutanoic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorobutanesulfonic acid (8)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
106.7%
0.0032 µg/L
⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0002 µg/L
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/27/2024
14 months ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.09 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.09 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.09 µg/L
Below Reporting Level
10/14/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.09 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorobutanoic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
274%
0.0137 µg/L
⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0087 µg/L
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

perfluorodecanoic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorododecanoic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluoroheptanesulfonic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluoroheptanoic acid (8)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/27/2024
14 months ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.01 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.01 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.01 µg/L
Below Reporting Level
10/14/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.01 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorohexanesulfonic acid (8)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/27/2024
14 months ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
10/14/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorohexanoic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
113.3%
0.0034 µg/L
⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0004 µg/L
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorononanoic acid (8)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
6/27/2024
14 months ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
10/14/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluorooctanesulfonic acid (8)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
6/27/2024
14 months ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.04 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.04 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.04 µg/L
Below Reporting Level
10/14/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.04 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluorooctanoic acid (8)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
6/27/2024
14 months ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/20/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
10/14/2014
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/20/2014
11 years ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluoropentanesulfonic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.004 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluoropentanoic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
1170%
0.0351 µg/L
⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0321 µg/L
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
2580%
0.0774 µg/L
⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0744 µg/L
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.003 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
560%
0.0168 µg/L
⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0138 µg/L
6/27/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorotetradecanoic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.008 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.008 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.008 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.008 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.008 µg/L
Reference Level: ?
Contaminant Details

perfluorotridecanoic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.007 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.007 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.007 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.007 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.007 µg/L
Reference Level: ?
Contaminant Details

perfluoroundecanoic acid (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.002 µg/L
Below Reporting Level
3/10/2025
5 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.002 µg/L
Below Reporting Level
12/9/2024
8 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.002 µg/L
Below Reporting Level
9/10/2024
11 months ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.002 µg/L
Below Reporting Level
6/27/2024
14 months ago
Minimum Reporting Level: 0.002 µg/L
Reference Level: ?
Contaminant Details

profenofos (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.3 µg/L
Reference Level: 0.3 µg/L
Contaminant Details

quinoline (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.02 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.02 µg/L
Reference Level: 0.01 µg/L
Contaminant Details

s-ethyl-dipropylthiocarbamate (EPTC) (2)

ℹ️
0%
<1 µg/L
Below Reporting Level
11/14/2001
23 years ago
ℹ️
0%
<1 µg/L
Below Reporting Level
5/8/2001
24 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

strontium (8)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
86666.7%
260 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 259.7 µg/L
5/12/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
83333.3%
250 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 249.7 µg/L
5/12/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
90000%
270 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 269.7 µg/L
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
86666.7%
260 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 259.7 µg/L
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
113333.3%
340 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 339.7 µg/L
2/9/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
113333.3%
340 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 339.7 µg/L
2/9/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
173333.3%
520 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 519.7 µg/L
5/20/2014
11 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
173333.3%
520 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 519.7 µg/L
5/20/2014
11 years ago
Minimum Reporting Level: 0.3 µg/L
Reference Level: ?
Contaminant Details

tebuconazole (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.2 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: 190 µg/L
Contaminant Details

terbacil (2)

ℹ️
0%
<2 µg/L
Below Reporting Level
11/14/2001
23 years ago
ℹ️
0%
<2 µg/L
Below Reporting Level
5/8/2001
24 years ago
Minimum Reporting Level: 2 µg/L
Reference Level: ?
Contaminant Details

total microcystins (6)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
7/13/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
6/16/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
6/3/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
5/18/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
4/28/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.3 µg/L
Below Reporting Level
4/9/2020
5 years ago
Minimum Reporting Level: 0.3 µg/L
Reference Level: ?
Contaminant Details

Total Permethrin (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.04 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.04 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.04 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.04 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.04 µg/L
Reference Level: 3.344 µg/L
Contaminant Details

tribufos (4)

Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.07 µg/L
Below Reporting Level
11/12/2020
4 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.07 µg/L
Below Reporting Level
8/4/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.07 µg/L
Below Reporting Level
5/19/2020
5 years ago
Entry Point to Dist. System
GCWA Intertie ℹ️
0%
<0.07 µg/L
Below Reporting Level
2/19/2020
5 years ago
Minimum Reporting Level: 0.07 µg/L
Reference Level: 0.6 µg/L
Contaminant Details

vanadium (8)

EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
700%
1.4 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.2 µg/L
5/12/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
650%
1.3 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.1 µg/L
5/12/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
475%
0.95 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.75 µg/L
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
470%
0.94 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.74 µg/L
3/2/2015
10 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
600%
1.2 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 1 µg/L
2/9/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
600%
1.2 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 1 µg/L
2/9/2015
10 years ago
DSMRT for GCWA TX City
Distribution System - SW ℹ️
440%
0.88 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.68 µg/L
5/20/2014
11 years ago
EPTDS from GCWA TX City
Gulf Coast Water Intertie ℹ️
415%
0.83 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.63 µg/L
5/20/2014
11 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

Sampling Facilities

GCWA Intertie
Surface Water (SW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Distribution System
Surface Water (SW)

1210 Foreman StreetDistribution System (DS)
2309 ClarkDistribution System (DS)
4300 Kirby DriveDistribution System (DS)
603 W. Wood CircleDistribution System (DS)

Gulf Coast Water Intertie
Surface Water (SW)

EPTDS from GCWA TX CityEntry Point to the Distribution System (EP)

Distribution System - SW
Surface Water (SW)

DSMRT for GCWA TX CityMaximum Residence Time (MR)

Ground Water (GW)

Entry Point to the Distribution System (EP)

FAQ

Is City of La Marque tap water safe to drink?

When was City of La Marque last tested for water contamination?

The latest water samples were taken on March 10th, 2025.