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Tap water quality report

Three Oaks Wsc

EPA monitoring tested this supplier for 79 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
20
detected
2,007
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
4
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2025-12-30
MR Monitoring Resolved 2025-12-30
MR Monitoring Resolved 2016-09-29
MR Monitoring Resolved 2016-09-29

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
530 µg/L 41%
of the EPA limit 1300 µg/L
 53/54 SYR4 2012–2019
Nitrate
30 µg/L 0.3%
of the EPA limit 10000 µg/L
 24/32 SYR4 2012–2019
Dibromochloromethane
4.8 µg/L
No EPA limit set
 16/18 SYR4 2013–2019
Bromoform
4.6 µg/L
No EPA limit set
 13/18 SYR4 2013–2019
Bromodichloromethane
2.4 µg/L
No EPA limit set
 9/18 SYR4 2013–2019
TTHM
12.8 µg/L 16%
of the EPA limit 80 µg/L
 8/8 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2025
Lead
6.9 µg/L 46%
of the EPA limit 15 µg/L
 7/54 SYR4 2012–2019
Barium
189 µg/L 9.5%
of the EPA limit 2000 µg/L
 6/6 SYR4 2012–2018
Di(2-ethylhexyl) Phthalate
6.3 µg/L 105%
of the EPA limit, in the worst sample — 6 µg/L
 6/17 SYR4 2016–2019
Fluoride
520 µg/L 13%
of the EPA limit 4000 µg/L
 6/6 SYR4 2012–2019
Combined Radium (-226 And -228)
3.9 pCi/L 78%
of the EPA limit 5 pCi/L
 4/4 SYR4 2013–2019
Dibromoacetic Acid
1.8 µg/L
No EPA limit set
 4/8 SYR4 2013–2019
Gross Beta Particle Activity
12.3 pCi/L
No EPA limit set
 4/4 SYR4 2013–2019
Nitrate-Nitrite
30 µg/L 0.3%
of the EPA limit 10000 µg/L
 4/6 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
2.9 µg/L 4.8%
of the EPA limit 60 µg/L
 4/8 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
6.7 pCi/L 45%
of the EPA limit 15 pCi/L
 3/3 SYR4 2015–2019
Chloroform
1.1 µg/L
No EPA limit set
 2/18 SYR4 2013–2019
Xylenes, Total
1.9 µg/L 0%
of the EPA limit 10000 µg/L
 2/10 SYR4 2015–2019
Dichloroacetic Acid
1.1 µg/L
No EPA limit set
 1/8 SYR4 2013–2019
59 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
RAABE, CURT
Phone
830-391-2198

Frequently asked questions about Three Oaks Wsc

Is Three Oaks Wsc tap water safe to drink?

EPA monitoring detected 20 contaminants in Three Oaks 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 Three Oaks Wsc's water?

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

How many people does Three Oaks Wsc serve?

Three Oaks Wsc reports serving 2,007 people in Texas, per its EPA record.

Has Three Oaks Wsc had any water quality violations?

The EPA has 4 violations on file for Three Oaks Wsc, of which 0 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.