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Tap water quality report

Atascosa Rural Wsc

EPA monitoring tested this supplier for 109 contaminants and detected 24. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
24
detected
13,857
people served
70
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
SWP
Ownership
Local government
Counties served
Bexar

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.

70
health-based violations
134
violations on file
2
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2023-04-01 → 2023-06-30
MCL Health-based Resolved 2023-04-01 → 2023-06-30
MCL Health-based Resolved 2023-04-01 → 2023-06-30
MCL Health-based Resolved 2023-04-01 → 2023-06-30
MCL Health-based Resolved 2023-04-01 → 2023-06-30
MCL Health-based Resolved 2023-04-01 → 2023-06-30
MCL Health-based Resolved 2023-01-01 → 2023-03-31
MCL Health-based Resolved 2023-01-01 → 2023-03-31
MCL Health-based Resolved 2023-01-01 → 2023-03-31
MCL Health-based Resolved 2023-01-01 → 2023-03-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Dibromochloromethane
18.9 µg/L
No EPA limit set
 111/125 SYR4 2012–2019
TTHM
42.9 µg/L 54%
of the EPA limit 80 µg/L
 102/106 SYR4 2012–2019
Bromoform
13.4 µg/L
No EPA limit set
 90/125 SYR4 2012–2019
Copper
891 µg/L 69%
of the EPA limit 1300 µg/L
 74/92 SYR4 2013–2019
Bromodichloromethane
11.8 µg/L
No EPA limit set
 62/125 SYR4 2012–2019
Nitrate
12400 µg/L 124%
of the EPA limit, in the worst sample — 10000 µg/L
 48/56 SYR4 2012–2019
Dibromoacetic Acid
6.3 µg/L
No EPA limit set
 26/106 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
13.7 µg/L 23%
of the EPA limit 60 µg/L
 26/106 SYR4 2012–2019
Lead
16.3 µg/L 109%
of the EPA limit, in the worst sample — 15 µg/L
 19/92 SYR4 2013–2019
Combined Radium (-226 And -228)
4.94 pCi/L 99%
of the EPA limit 5 pCi/L
 14/14 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
18 pCi/L 120%
of the EPA limit, in the worst sample — 15 pCi/L
 14/15 SYR4 2013–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Gross Beta Particle Activity
8.6 pCi/L
No EPA limit set
 13/15 SYR4 2013–2019
Combined Uranium
4.9 µg/L 16%
of the EPA limit 30 µg/L
 12/15 SYR4 2013–2019
Chloroform
5 µg/L
No EPA limit set
 8/125 SYR4 2012–2019
Barium
152 µg/L 7.6%
of the EPA limit 2000 µg/L
 6/6 SYR4 2014–2019
Dichloroacetic Acid
4.2 µg/L
No EPA limit set
 6/106 SYR4 2012–2019
Nitrate-Nitrite
1620 µg/L 16%
of the EPA limit 10000 µg/L
 6/7 SYR4 2012–2019
Fluoride
2470 µg/L 62%
of the EPA limit 4000 µg/L
 5/5 SYR4 2014–2017
Thallium, Total
2.7 µg/L 135%
of the EPA limit, in the worst sample — 2 µg/L
 5/9 SYR4 2014–2019
Lithium
13.6 µg/L
No EPA limit set
 3/6 UCMR-5 2025
Trichloroacetic Acid
2.1 µg/L
No EPA limit set
 2/106 SYR4 2012–2019
Monobromoacetic Acid
1.1 µg/L
No EPA limit set
 1/106 SYR4 2012–2019
Selenium
6.5 µg/L 13%
of the EPA limit 50 µg/L
 1/6 SYR4 2014–2019
85 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SULLIVAN, JAMES
Phone
210-622-3901

Frequently asked questions about Atascosa Rural Wsc

Is Atascosa Rural Wsc tap water safe to drink?

EPA monitoring detected 24 contaminants in Atascosa Rural Wsc'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 Atascosa Rural Wsc's water?

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

How many people does Atascosa Rural Wsc serve?

Atascosa Rural Wsc reports serving 13,857 people in Texas, per its EPA record.

Has Atascosa Rural Wsc had any water quality violations?

The EPA has 134 violations on file for Atascosa Rural Wsc, of which 70 are health-based (a contaminant limit or required treatment was breached) and 2 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.