Is Coweta Pwa Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Wagoner

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.

850

health-based violations

1,116

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfhxa	0.0042 µg/L	3/4	2024
PFHXS	0.0055 µg/L	2/4	2024
Pfpea	0.0033 µg/L	2/4	2024
Pfba	0.0069 µg/L	1/4	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
Bromodichloromethane	22.24 µg/L No EPA limit set worst single sample: 28.9 µg/L	65/68	SYR4	2012–2019
Chloroform	94.68 µg/L No EPA limit set worst single sample: 125 µg/L	65/68	SYR4	2012–2019
Copper	699.15 µg/L 54% of the EPA limit 1300 µg/L worst single sample: 880 µg/L	60/60	SYR4	2013–2019
Dibromochloromethane	11.347 µg/L No EPA limit set worst single sample: 12.1 µg/L	58/68	SYR4	2012–2019
Dichloroacetic Acid	48.273 µg/L No EPA limit set worst single sample: 72.37 µg/L	58/60	SYR4	2012–2019
TTHM	126.9 µg/L 159% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 150 µg/L	58/60	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	94.7475 µg/L 158% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 129.16 µg/L	58/60	SYR4	2012–2019
Trichloroacetic Acid	40.3215 µg/L No EPA limit set worst single sample: 61.8 µg/L	58/60	SYR4	2012–2019
Monochloroacetic Acid	12.65 µg/L No EPA limit set worst single sample: 13.57 µg/L	41/60	SYR4	2012–2019
Dibromoacetic Acid	6.6845 µg/L No EPA limit set worst single sample: 12.71 µg/L	14/60	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	14/14	LCR	2022
Bromoform	7.851 µg/L No EPA limit set worst single sample: 7.95 µg/L	12/68	SYR4	2012–2019
Nitrate-Nitrite	755 µg/L 7.6% of the EPA limit 10000 µg/L worst single sample: 780 µg/L	6/8	SYR4	2012–2019
Lead	105.68 µg/L 705% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 130 µg/L	5/60	SYR4	2013–2019
Monobromoacetic Acid	10.647 µg/L No EPA limit set worst single sample: 11.08 µg/L	3/60	SYR4	2012–2019
Combined Radium (-226 And -228)	1.0796 pCi/L 22% of the EPA limit 5 pCi/L worst single sample: 1.12 pCi/L	2/2	SYR4	2013–2019
Gross Beta Particle Activity	4.369 pCi/L No EPA limit set worst single sample: 4.39 pCi/L	2/2	SYR4	2013–2019
Nitrate	680 µg/L 6.8% of the EPA limit 10000 µg/L	2/2	SYR4	2012
Gross Alpha, Excl. Radon And U	0.3130 pCi/L 2.1% of the EPA limit 15 pCi/L	1/2	SYR4	2013–2019
Hexachlorocyclopentadiene	0.0400 µg/L 0.1% of the EPA limit 50 µg/L	1/1	SYR4	2018
Simazine	0.1200 µg/L 3% of the EPA limit 4 µg/L	1/1	SYR4	2018

61 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaArsenicAtrazineBhc-GammaBenzeneChlorobenzeneCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideLassoMethoxychlorNetfosaaNfdhaNmefosaaNitritePFBSPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaStyreneTetrachloroethyleneTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: COWETA
Phone: 918-486-8073
Email: [email protected]

Frequently asked questions about Coweta Pwa

Is Coweta Pwa tap water safe to drink?

EPA monitoring detected 25 contaminants in Coweta Pwa'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 Coweta Pwa's water?

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

How many people does Coweta Pwa serve?

Coweta Pwa reports serving 9,450 people in Oklahoma, per its EPA record.

Has Coweta Pwa had any water quality violations?

The EPA has 1116 violations on file for Coweta Pwa, of which 850 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.