Is Mccoy Wsc Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Atascosa

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2012-06-01 → 2012-06-30
MCL	Health-based	Resolved	2012-06-01 → 2012-06-30
MCL	Health-based	Resolved	2012-06-01 → 2012-06-30
MCL	Health-based	Resolved	2012-06-01 → 2012-06-30
MCL	Health-based	Resolved	2011-08-01 → 2011-08-31
MCL	Health-based	Resolved	2011-08-01 → 2011-08-31
MCL	Health-based	Resolved	2011-08-01 → 2011-08-31
MCL	Health-based	Resolved	2011-08-01 → 2011-08-31
MCL	Health-based	Resolved	2007-09-01 → 2007-09-30
MCL	Health-based	Resolved	2007-09-01 → 2007-09-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
6:2 Fts	0.1190 µg/L	1/8	2024

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Copper	414.75 µg/L 32% of the EPA limit 1300 µg/L worst single sample: 688 µg/L	42/45	SYR4	2014–2017
Bromoform	44.775 µg/L No EPA limit set worst single sample: 78.1 µg/L	38/41	SYR4	2013–2019
Dibromochloromethane	13.36 µg/L No EPA limit set worst single sample: 13.9 µg/L	38/41	SYR4	2013–2019
Bromodichloromethane	2.795 µg/L No EPA limit set worst single sample: 3 µg/L	28/41	SYR4	2013–2019
TTHM	63.1 µg/L 79% of the EPA limit 80 µg/L worst single sample: 88.1 µg/L	26/26	SYR4	2013–2019
Dibromoacetic Acid	7.68 µg/L No EPA limit set worst single sample: 7.8 µg/L	25/26	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	7.68 µg/L 13% of the EPA limit 60 µg/L worst single sample: 7.8 µg/L	25/26	SYR4	2013–2019
Nitrate	50 µg/L 0.5% of the EPA limit 10000 µg/L	24/48	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	16/16	LCR	2023
Lead	3.94 µg/L 26% of the EPA limit 15 µg/L worst single sample: 4.3 µg/L	9/45	SYR4	2014–2017
Lithium	62.2 µg/L No EPA limit set	8/8	UCMR-5	2024
Combined Radium (-226 And -228)	3.181 pCi/L 64% of the EPA limit 5 pCi/L worst single sample: 3.34 pCi/L	7/7	SYR4	2013–2019
Barium	123 µg/L 6.2% of the EPA limit 2000 µg/L worst single sample: 126 µg/L	6/6	SYR4	2014–2019
Fluoride	575 µg/L 14% of the EPA limit 4000 µg/L worst single sample: 620 µg/L	6/6	SYR4	2014–2017
Gross Beta Particle Activity	9.6 pCi/L No EPA limit set worst single sample: 9.9 pCi/L	6/7	SYR4	2013–2019
Nitrate-Nitrite	40 µg/L 0.4% of the EPA limit 10000 µg/L	3/12	SYR4	2012–2019
Xylenes, Total	2.77 µg/L 0% of the EPA limit 10000 µg/L worst single sample: 2.9 µg/L	3/15	SYR4	2015–2019
Selenium	4.8 µg/L 9.6% of the EPA limit 50 µg/L	2/6	SYR4	2014–2019
Arsenic	3.3 µg/L 33% of the EPA limit 10 µg/L	1/6	SYR4	2014–2019
Gross Alpha, Excl. Radon And U	3.6 pCi/L 24% of the EPA limit 15 pCi/L	1/5	SYR4	2016–2019

88 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 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: LUTHRINGER, CLAYTON
Phone: 830-569-5575
Email: [email protected]

Frequently asked questions about Mccoy Wsc

Is Mccoy Wsc tap water safe to drink?

EPA monitoring detected 21 contaminants in Mccoy 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 Mccoy Wsc's water?

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

How many people does Mccoy Wsc serve?

Mccoy Wsc reports serving 9,621 people in Texas, per its EPA record.

Has Mccoy Wsc had any water quality violations?

The EPA has 55 violations on file for Mccoy Wsc, of which 20 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.