Is Nowata Municipal Authority Tap Water Safe? Quality Report

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

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.

221

health-based violations

340

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2024-10-17
TT	Health-based	Resolved	2024-10-17
MCL	Health-based	Archived	2024-04-01 → 2024-06-30
MCL	Health-based	Archived	2024-04-01 → 2024-06-30
MCL	Health-based	Archived	2024-04-01 → 2024-06-30
MCL	Health-based	Archived	2024-04-01 → 2024-06-30
MCL	Health-based	Archived	2024-04-01 → 2024-06-30
MCL	Health-based	Archived	2024-04-01 → 2024-06-30
MCL	Health-based	Archived	2024-01-01 → 2024-03-31
MCL	Health-based	Archived	2024-01-01 → 2024-03-31

PFAS detected

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

Contaminant	Max	Detection rate	Period
PFOS	0.0094 µg/L	2/4	2024
Pfhxa	0.0044 µg/L	1/4	2023
PFHXS	0.0048 µg/L	1/4	2023
Pfpea	0.0041 µg/L	1/4	2023

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	487.4 µg/L 37% of the EPA limit 1300 µg/L worst single sample: 744 µg/L	60/62	SYR4	2013–2019
TTHM	110.326 µg/L 138% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 135.13 µg/L	57/57	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	68.275 µg/L 114% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 81.65 µg/L	56/58	SYR4	2012–2019
Trichloroacetic Acid	28.65 µg/L No EPA limit set worst single sample: 30.6 µg/L	55/58	SYR4	2012–2019
Dichloroacetic Acid	42.22 µg/L No EPA limit set worst single sample: 46.6 µg/L	53/58	SYR4	2012–2019
Bromodichloromethane	32.025 µg/L No EPA limit set worst single sample: 37 µg/L	48/48	SYR4	2012–2019
Chloroform	72.165 µg/L No EPA limit set worst single sample: 81.7 µg/L	48/48	SYR4	2012–2019
Dibromochloromethane	20.205 µg/L No EPA limit set worst single sample: 31 µg/L	48/48	SYR4	2012–2019
Lead	4.094 µg/L 27% of the EPA limit 15 µg/L worst single sample: 6.2 µg/L	33/62	SYR4	2013–2019
Bromoform	12.32 µg/L No EPA limit set worst single sample: 12.6 µg/L	15/48	SYR4	2012–2019
Lead	0.0012 mg/L 8% of the EPA limit 0.0150 mg/L	14/14	LCR	2025
Dibromoacetic Acid	17.753 µg/L No EPA limit set worst single sample: 22.8 µg/L	8/58	SYR4	2012–2019
Monochloroacetic Acid	5.484 µg/L No EPA limit set worst single sample: 5.67 µg/L	7/58	SYR4	2012–2019
Fluoride	224 µg/L 5.6% of the EPA limit 4000 µg/L worst single sample: 230 µg/L	5/6	SYR4	2012–2013
Nitrate-Nitrite	404 µg/L 4% of the EPA limit 10000 µg/L	4/16	SYR4	2012–2019
Barium	59.4 µg/L 3% of the EPA limit 2000 µg/L	1/1	SYR4	2013
Gross Alpha, Excl. Radon And U	1.83 pCi/L 12% of the EPA limit 15 pCi/L	1/1	SYR4	2017
Gross Beta Particle Activity	6.64 pCi/L No EPA limit set	1/1	SYR4	2017
Monobromoacetic Acid	2.16 µg/L No EPA limit set	1/58	SYR4	2012–2019

57 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-PF3ONSAdonaAntimony, TotalArsenicBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneEthylbenzeneHfpo-DaMercuryNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOAPfpesPftaPftrdaPfunaSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: NOWATA MUNICIPAL AUTHORITY
Phone: 918-273-3538
Email: [email protected]

Frequently asked questions about Nowata Municipal Authority

Is Nowata Municipal Authority tap water safe to drink?

EPA monitoring detected 23 contaminants in Nowata Municipal Authority'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 Nowata Municipal Authority's water?

EPA monitoring detected Copper, TTHM, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Nowata Municipal Authority serve?

Nowata Municipal Authority reports serving 3,971 people in Oklahoma, per its EPA record.

Has Nowata Municipal Authority had any water quality violations?

The EPA has 340 violations on file for Nowata Municipal Authority, of which 221 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.