Is Noble Utilities Authority Tap Water Safe? Quality Report

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

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
TT	Health-based	Resolved	2024-10-17
TT	Health-based	Resolved	2024-10-17
MCL	Health-based	Resolved	2015-05-01 → 2015-05-31
MCL	Health-based	Resolved	2015-05-01 → 2015-05-31
MCL	Health-based	Resolved	2015-05-01 → 2015-05-31
MCL	Health-based	Resolved	2015-05-01 → 2015-05-31
MCL	Health-based	Resolved	2008-09-01 → 2008-09-30
MCL	Health-based	Resolved	2008-09-01 → 2008-09-30
MCL	Health-based	Resolved	2008-09-01 → 2008-09-30
MCL	Health-based	Resolved	2008-09-01 → 2008-09-30

PFAS detected

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

Contaminant	Max	Detection rate	Period
PFHXS	0.0071 µg/L	2/10	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	351 µg/L 27% of the EPA limit 1300 µg/L worst single sample: 678 µg/L	141/141	SYR4	2012–2019
Nitrate-Nitrite	2046.5 µg/L 20% of the EPA limit 10000 µg/L worst single sample: 4220 µg/L	80/80	SYR4	2012–2019
Combined Uranium	6.92 µg/L 23% of the EPA limit 30 µg/L worst single sample: 8.1 µg/L	29/29	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	9.7 pCi/L 65% of the EPA limit 15 pCi/L worst single sample: 9.71 pCi/L	29/29	SYR4	2012–2019
Barium	399.6 µg/L 20% of the EPA limit 2000 µg/L worst single sample: 409 µg/L	25/25	SYR4	2013–2018
Gross Beta Particle Activity	5.4696 pCi/L No EPA limit set worst single sample: 5.747 pCi/L	25/29	SYR4	2012–2019
Chromium	19 µg/L 19% of the EPA limit 100 µg/L worst single sample: 21.7 µg/L	19/25	SYR4	2013–2018
Combined Radium (-226 And -228)	2.872 pCi/L 57% of the EPA limit 5 pCi/L worst single sample: 4.2 pCi/L	17/29	SYR4	2012–2019
Lead	0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L	16/16	LCR	2025
Lithium	24.4 µg/L No EPA limit set	10/10	UCMR-5	2023
Bromodichloromethane	5.3 µg/L No EPA limit set worst single sample: 5.6 µg/L	7/33	SYR4	2012–2019
Dibromochloromethane	5.73 µg/L No EPA limit set worst single sample: 6 µg/L	7/33	SYR4	2012–2019
TTHM	16.02 µg/L 20% of the EPA limit 80 µg/L worst single sample: 16.5 µg/L	7/7	SYR4	2014–2019
Bromoform	5.45 µg/L No EPA limit set worst single sample: 6.1 µg/L	6/33	SYR4	2012–2019
Chloroform	3.225 µg/L No EPA limit set worst single sample: 3.5 µg/L	6/33	SYR4	2012–2019
Fluoride	260 µg/L 6.5% of the EPA limit 4000 µg/L worst single sample: 270 µg/L	5/25	SYR4	2013–2018
Diquat	0.8550 µg/L 4.3% of the EPA limit 20 µg/L worst single sample: 0.9000 µg/L	4/31	SYR4	2018–2019
Total Haloacetic Acids (HAA5)	1.28 µg/L 2.1% of the EPA limit 60 µg/L worst single sample: 1.3 µg/L	3/7	SYR4	2014–2019
Dibromoacetic Acid	1.29 µg/L No EPA limit set worst single sample: 1.3 µg/L	2/7	SYR4	2014–2019
Dichloroacetic Acid	1.1 µg/L No EPA limit set	1/7	SYR4	2014–2019
Lead	5.3 µg/L 35% of the EPA limit 15 µg/L	1/141	SYR4	2012–2019

87 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 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: NOBLE UTILITIES AUTHORITY
Phone: 405-872-9251
Email: [email protected]

Frequently asked questions about Noble Utilities Authority

Is Noble Utilities Authority tap water safe to drink?

EPA monitoring detected 22 contaminants in Noble Utilities 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 Noble Utilities Authority's water?

EPA monitoring detected Copper, Nitrate-Nitrite, Combined Uranium, Gross Alpha, Excl. Radon And U, Barium, and others. The full list with the level and data source for each is above.

How many people does Noble Utilities Authority serve?

Noble Utilities Authority reports serving 5,750 people in Oklahoma, per its EPA record.

Has Noble Utilities Authority had any water quality violations?

The EPA has 51 violations on file for Noble Utilities Authority, of which 17 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.