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Tap water quality report

Gulf Coast Water Authority Tx City

EPA monitoring tested this supplier for 78 contaminants and detected 22. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

78
contaminants tested
22
detected
0
people served
4
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Surface water
Ownership
Local government
Counties served
Galveston

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

4
health-based violations
24
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
Other Monitoring Resolved 2020-02-12
Other Monitoring Resolved 2020-02-12

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Chlorite
375 µg/L 38%
of the EPA limit 1000 µg/L
worst single sample: 630 µg/L
223/228 SYR4 2013–2019
Nitrate
1480 µg/L 15%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Bromodichloromethane
20.67 µg/L
No EPA limit set
worst single sample: 22.7 µg/L
15/16 SYR4 2012–2019
Bromoform
8.38 µg/L
No EPA limit set
worst single sample: 8.8 µg/L
15/16 SYR4 2012–2019
Chloroform
15.29 µg/L
No EPA limit set
worst single sample: 17.6 µg/L
15/16 SYR4 2012–2019
Dibromochloromethane
22.15 µg/L
No EPA limit set
worst single sample: 25.3 µg/L
15/16 SYR4 2012–2019
Barium
114.7 µg/L 5.7%
of the EPA limit 2000 µg/L
worst single sample: 121 µg/L
8/8 SYR4 2013–2019
Dibromoacetic Acid
6.73 µg/L
No EPA limit set
worst single sample: 6.8 µg/L
8/8 SYR4 2012–2019
Dichloroacetic Acid
11.64 µg/L
No EPA limit set
worst single sample: 12.9 µg/L
8/8 SYR4 2012–2019
Fluoride
769 µg/L 19%
of the EPA limit 4000 µg/L
worst single sample: 860 µg/L
8/8 SYR4 2012–2019
TTHM
60.46 µg/L 76%
of the EPA limit 80 µg/L
worst single sample: 61.3 µg/L
8/8 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
20.875 µg/L 35%
of the EPA limit 60 µg/L
worst single sample: 22.8 µg/L
8/8 SYR4 2012–2019
Trichloroacetic Acid
5.325 µg/L
No EPA limit set
worst single sample: 6.2 µg/L
8/8 SYR4 2012–2019
Atrazine
0.3825 µg/L 13%
of the EPA limit 3 µg/L
worst single sample: 0.4100 µg/L
6/8 SYR4 2012–2019
Copper
22.65 µg/L 1.7%
of the EPA limit 1300 µg/L
worst single sample: 24.1 µg/L
6/6 SYR4 2013–2017
Cyanide
144 µg/L 72%
of the EPA limit 200 µg/L
worst single sample: 150 µg/L
2/6 SYR4 2014–2019
Simazine
0.2495 µg/L 6.2%
of the EPA limit 4 µg/L
worst single sample: 0.2500 µg/L
2/8 SYR4 2012–2019
Combined Radium (-226 And -228)
1 pCi/L 20%
of the EPA limit 5 pCi/L
 1/1 SYR4 2012
Gross Beta Particle Activity
5.4 pCi/L
No EPA limit set
 1/2 SYR4 2012–2018
Monobromoacetic Acid
1 µg/L
No EPA limit set
 1/8 SYR4 2012–2019
Monochloroacetic Acid
4 µg/L
No EPA limit set
 1/8 SYR4 2012–2019
Toluene
0.5000 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/8 SYR4 2012–2019
56 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MATLOCK, BRAD
Phone
409-935-2438

Frequently asked questions about Gulf Coast Water Authority Tx City

Is Gulf Coast Water Authority Tx City tap water safe to drink?

EPA monitoring detected 22 contaminants in Gulf Coast Water Authority Tx City's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Gulf Coast Water Authority Tx City's water?

EPA monitoring detected Chlorite, Nitrate, Bromodichloromethane, Bromoform, Chloroform, and others. The full list with the level and data source for each is above.

How many people does Gulf Coast Water Authority Tx City serve?

Gulf Coast Water Authority Tx City reports serving 0 people in Texas, per its EPA record.

Has Gulf Coast Water Authority Tx City had any water quality violations?

The EPA has 24 violations on file for Gulf Coast Water Authority Tx City, of which 4 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.