Is Barnsdall Tap Water Safe? Quality Report

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

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.

1,980

health-based violations

2,441

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Archived	2025-10-01 → 2025-12-31
TT	Health-based	Archived	2025-10-01 → 2025-12-31
TT	Health-based	Archived	2025-10-01 → 2025-12-31
TT	Health-based	Archived	2025-10-01 → 2025-12-31
TT	Health-based	Archived	2025-10-01 → 2025-12-31
TT	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

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	30.044 µg/L No EPA limit set worst single sample: 35.1 µg/L	52/52	SYR4	2012–2019
Chloroform	216.4 µg/L No EPA limit set worst single sample: 309 µg/L	52/52	SYR4	2012–2019
Dichloroacetic Acid	72.159 µg/L No EPA limit set worst single sample: 89 µg/L	50/50	SYR4	2012–2019
TTHM	250.964 µg/L 314% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 343 µg/L	50/50	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	175.827 µg/L 293% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 204 µg/L	50/50	SYR4	2012–2019
Trichloroacetic Acid	77.805 µg/L No EPA limit set worst single sample: 99.8 µg/L	50/50	SYR4	2012–2019
Dibromochloromethane	11.08 µg/L No EPA limit set worst single sample: 12.4 µg/L	42/52	SYR4	2012–2019
Monochloroacetic Acid	39.64 µg/L No EPA limit set worst single sample: 47.18 µg/L	41/50	SYR4	2012–2019
Dibromoacetic Acid	2.98 µg/L No EPA limit set worst single sample: 3.1 µg/L	13/50	SYR4	2012–2019
Copper	836.75 µg/L 64% of the EPA limit 1300 µg/L worst single sample: 1120 µg/L	12/69	SYR4	2013–2019
Lead	0.0057 mg/L 38% of the EPA limit 0.0150 mg/L	12/12	LCR	2025
Monobromoacetic Acid	11.1545 µg/L No EPA limit set worst single sample: 15.75 µg/L	8/50	SYR4	2012–2019
Nitrate-Nitrite	230 µg/L 2.3% of the EPA limit 10000 µg/L	8/14	SYR4	2012–2019
Bromoform	1.285 µg/L No EPA limit set worst single sample: 1.3 µg/L	7/52	SYR4	2012–2019
Lead	29.91 µg/L 199% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 33.6 µg/L	4/69	SYR4	2013–2019
Barium	24.8 µg/L 1.2% of the EPA limit 2000 µg/L	1/1	SYR4	2013
Combined Radium (-226 And -228)	1.77 pCi/L 35% of the EPA limit 5 pCi/L	1/1	SYR4	2016
Gross Alpha, Excl. Radon And U	0.3750 pCi/L 2.5% of the EPA limit 15 pCi/L	1/1	SYR4	2016
Gross Beta Particle Activity	6.51 pCi/L No EPA limit set	1/1	SYR4	2016

31 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChromiumCombined UraniumDichloromethaneEthylbenzeneFluorideMercurySeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: BARNSDALL
Phone: 918-847-3522
Email: [email protected]

Frequently asked questions about Barnsdall

Is Barnsdall tap water safe to drink?

EPA monitoring detected 19 contaminants in Barnsdall'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 Barnsdall's water?

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

How many people does Barnsdall serve?

Barnsdall reports serving 1,243 people in Oklahoma, per its EPA record.

Has Barnsdall had any water quality violations?

The EPA has 2441 violations on file for Barnsdall, of which 1980 are health-based (a contaminant limit or required treatment was breached) and 12 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.