Is Pawnee Tap Water Safe? Quality Report

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

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.

886

health-based violations

1,326

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30

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 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	422.2 µg/L 32% of the EPA limit 1300 µg/L worst single sample: 910 µg/L	63/85	SYR4	2014–2019
TTHM	165.2 µg/L 207% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 246 µg/L	59/59	SYR4	2012–2019
Dibromochloromethane	36.075 µg/L No EPA limit set worst single sample: 43.5 µg/L	56/63	SYR4	2012–2019
Bromodichloromethane	56.86 µg/L No EPA limit set worst single sample: 65.7 µg/L	53/63	SYR4	2012–2019
Chloroform	72.5 µg/L No EPA limit set worst single sample: 161 µg/L	51/63	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	54.435 µg/L 91% of the EPA limit 60 µg/L worst single sample: 75.6 µg/L	48/59	SYR4	2012–2019
Bromoform	8.39 µg/L No EPA limit set worst single sample: 9.06 µg/L	41/63	SYR4	2012–2019
Dichloroacetic Acid	29.26 µg/L No EPA limit set worst single sample: 34.5 µg/L	40/53	SYR4	2012–2019
Trichloroacetic Acid	25.05 µg/L No EPA limit set worst single sample: 41.4 µg/L	40/53	SYR4	2012–2019
Dibromoacetic Acid	4.3075 µg/L No EPA limit set worst single sample: 7.94 µg/L	36/53	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	19/19	LCR	2025
Lead	25.66 µg/L 171% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 43.3 µg/L	19/85	SYR4	2014–2019
Monobromoacetic Acid	3.8425 µg/L No EPA limit set worst single sample: 4.27 µg/L	16/53	SYR4	2012–2019
Nitrate-Nitrite	940 µg/L 9.4% of the EPA limit 10000 µg/L	12/13	SYR4	2012–2019
Gross Beta Particle Activity	4.54 pCi/L No EPA limit set worst single sample: 4.82 pCi/L	6/6	SYR4	2014–2017
Combined Radium (-226 And -228)	0.5888 pCi/L 12% of the EPA limit 5 pCi/L worst single sample: 0.6050 pCi/L	5/6	SYR4	2014–2017
Combined Uranium	2.3 µg/L 7.7% of the EPA limit 30 µg/L worst single sample: 2.42 µg/L	4/6	SYR4	2014–2017
Monochloroacetic Acid	3.6635 µg/L No EPA limit set worst single sample: 3.71 µg/L	4/53	SYR4	2012–2019
Barium	120.8 µg/L 6% of the EPA limit 2000 µg/L worst single sample: 122 µg/L	3/3	SYR4	2014–2017
Fluoride	339 µg/L 8.5% of the EPA limit 4000 µg/L worst single sample: 350 µg/L	3/3	SYR4	2014–2017
Gross Alpha, Excl. Radon And U	2.752 pCi/L 18% of the EPA limit 15 pCi/L worst single sample: 2.87 pCi/L	3/6	SYR4	2014–2017
Nitrate	140 µg/L 1.4% of the EPA limit 10000 µg/L	2/2	SYR4	2012
Arsenic	5 µg/L 50% of the EPA limit 10 µg/L	1/4	SYR4	2012–2017

29 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneEthylbenzeneMercuryNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: PAWNEE
Phone: 918-762-2658
Email: [email protected]

Frequently asked questions about Pawnee

Is Pawnee tap water safe to drink?

EPA monitoring detected 23 contaminants in Pawnee'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 Pawnee's water?

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

How many people does Pawnee serve?

Pawnee reports serving 2,230 people in Oklahoma, per its EPA record.

Has Pawnee had any water quality violations?

The EPA has 1326 violations on file for Pawnee, of which 886 are health-based (a contaminant limit or required treatment was breached) and 3 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.