Tap WaterIndex

← Texas

Tap water quality report

Oak Hills Wsc

EPA monitoring tested this supplier for 109 contaminants and detected 22. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
22
detected
6,225
people served
0
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Ground water
Ownership
Local government
Counties served
Wilson

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.

0
health-based violations
1
violations on file
1
still open
ViolationTypeStatusPeriod
MR Monitoring Unaddressed 2025-12-30

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
Copper
597 µg/L 46%
of the EPA limit 1300 µg/L
 61/64 SYR4 2013–2019
Dibromochloromethane
10.2 µg/L
No EPA limit set
 17/22 SYR4 2013–2019
Nitrate
80 µg/L 0.8%
of the EPA limit 10000 µg/L
 16/32 SYR4 2012–2019
Bromodichloromethane
5.5 µg/L
No EPA limit set
 14/22 SYR4 2013–2019
Lead
0.0022 mg/L 15%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Bromoform
7 µg/L
No EPA limit set
 13/22 SYR4 2013–2019
Lead
9.24 µg/L 62%
of the EPA limit 15 µg/L
 10/64 SYR4 2013–2019
TTHM
24.6 µg/L 31%
of the EPA limit 80 µg/L
 8/8 SYR4 2013–2019
Chloroform
1.9 µg/L
No EPA limit set
 7/22 SYR4 2013–2019
Dichloroacetic Acid
4.3 µg/L
No EPA limit set
 7/8 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
7.2 µg/L 12%
of the EPA limit 60 µg/L
 7/8 SYR4 2013–2019
Xylenes, Total
3.1 µg/L 0%
of the EPA limit 10000 µg/L
 7/14 SYR4 2014–2019
Dibromoacetic Acid
2 µg/L
No EPA limit set
 6/8 SYR4 2013–2019
Barium
180 µg/L 9%
of the EPA limit 2000 µg/L
 4/4 SYR4 2014–2017
Fluoride
370 µg/L 9.3%
of the EPA limit 4000 µg/L
 4/4 SYR4 2014–2017
Nitrate-Nitrite
40 µg/L 0.4%
of the EPA limit 10000 µg/L
 3/6 SYR4 2012–2015
Gross Beta Particle Activity
6.4 pCi/L
No EPA limit set
 2/2 SYR4 2015
Lithium
49 µg/L
No EPA limit set
 2/2 UCMR-5 2025
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 1/1 SYR4 2015
Gross Alpha, Excl. Radon And U
3.2 pCi/L 21%
of the EPA limit 15 pCi/L
 1/2 SYR4 2015
Selenium
4.1 µg/L 8.2%
of the EPA limit 50 µg/L
 1/4 SYR4 2014–2017
Trichloroacetic Acid
2.9 µg/L
No EPA limit set
 1/8 SYR4 2013–2019
87 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 TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
FLORES, FIDEL
Phone
830-393-7739

Frequently asked questions about Oak Hills Wsc

Is Oak Hills Wsc tap water safe to drink?

EPA monitoring detected 22 contaminants in Oak Hills 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 Oak Hills Wsc's water?

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

How many people does Oak Hills Wsc serve?

Oak Hills Wsc reports serving 6,225 people in Texas, per its EPA record.

Has Oak Hills Wsc had any water quality violations?

The EPA has 1 violation on file for Oak Hills Wsc, of which 0 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.