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Tap water quality report

City of Aransas Pass

EPA monitoring tested this supplier for 44 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
18
detected
8,088
people served
11
health-based violations
Water source
SWP
Ownership
Local government
Counties served
San Patricio

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.

11
health-based violations
101
violations on file
1
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
MCL Health-based Resolved 2011-05-01 → 2011-05-31
MCL Health-based Resolved 2011-05-01 → 2011-05-31
MCL Health-based Resolved 2011-05-01 → 2011-05-31
MCL Health-based Resolved 2011-05-01 → 2011-05-31
MCL Health-based Resolved 2011-05-01 → 2011-05-31
MCL Health-based Resolved 2011-05-01 → 2011-05-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0110 µg/L 2/2 2025
Pfhxa 0.0034 µg/L 2/2 2025
Pfpea 0.0052 µg/L 2/2 2025

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
Bromodichloromethane
12.9 µg/L
No EPA limit set
worst single sample: 13.7 µg/L
62/62 SYR4 2012–2019
Dibromoacetic Acid
18.975 µg/L
No EPA limit set
worst single sample: 21.2 µg/L
62/62 SYR4 2012–2019
Dibromochloromethane
19.67 µg/L
No EPA limit set
worst single sample: 20.4 µg/L
62/62 SYR4 2012–2019
Dichloroacetic Acid
19.995 µg/L
No EPA limit set
worst single sample: 24.3 µg/L
62/62 SYR4 2012–2019
TTHM
56.23 µg/L 70%
of the EPA limit 80 µg/L
worst single sample: 73.4 µg/L
62/62 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
32.87 µg/L 55%
of the EPA limit 60 µg/L
worst single sample: 35.6 µg/L
62/62 SYR4 2012–2019
Bromoform
32.67 µg/L
No EPA limit set
worst single sample: 48 µg/L
55/62 SYR4 2012–2019
Chloroform
8.145 µg/L
No EPA limit set
worst single sample: 11.4 µg/L
54/62 SYR4 2012–2019
Copper
222.165 µg/L 17%
of the EPA limit 1300 µg/L
worst single sample: 326.7 µg/L
50/50 SYR4 2013–2017
Trichloroacetic Acid
2.8 µg/L
No EPA limit set
worst single sample: 3.1 µg/L
33/62 SYR4 2012–2019
Lead
5.759 µg/L 38%
of the EPA limit 15 µg/L
worst single sample: 7.25 µg/L
27/50 SYR4 2013–2017
Lead
0.0028 mg/L 19%
of the EPA limit 0.0150 mg/L
14/14 LCR 2023
Monobromoacetic Acid
6.28 µg/L
No EPA limit set
worst single sample: 6.5 µg/L
12/62 SYR4 2012–2019
Monochloroacetic Acid
5.465 µg/L
No EPA limit set
worst single sample: 5.5 µg/L
8/62 SYR4 2012–2019
Lithium
53.8 µg/L
No EPA limit set
4/4 UCMR-5 2025
26 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaNetfosaaNfdhaNmefosaaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfuna

Utility contact

Contact
KNIGHT, JASON
Phone
361-758-5301

Frequently asked questions about City of Aransas Pass

Is City of Aransas Pass tap water safe to drink?

EPA monitoring detected 18 contaminants in City of Aransas Pass'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 City of Aransas Pass's water?

EPA monitoring detected Bromodichloromethane, Dibromoacetic Acid, Dibromochloromethane, Dichloroacetic Acid, TTHM, and others. The full list with the level and data source for each is above.

How many people does City of Aransas Pass serve?

City of Aransas Pass reports serving 8,088 people in Texas, per its EPA record.

Has City of Aransas Pass had any water quality violations?

The EPA has 101 violations on file for City of Aransas Pass, of which 11 are health-based (a contaminant limit or required treatment was breached) and 1 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.