Is Frederick Tap Water Safe? Quality Report

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

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.

720

health-based violations

801

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	2026-01-01 → 2026-03-31
MCL	Health-based	Archived	2026-01-01 → 2026-03-31
MCL	Health-based	Archived	2026-01-01 → 2026-03-31
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
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
TT	Health-based	Resolved	2024-10-17

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfba	0.0125 µg/L	3/3	2023
PFHXS	0.0030 µg/L	1/3	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
Chlorite	1066.5 µg/L 107% of the EPA limit, at the 95th percentile of samples — 1000 µg/L worst single sample: 1510 µg/L	168/192	SYR4	2012–2019
TTHM	217.28 µg/L 272% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 274.2 µg/L	62/62	SYR4	2012–2019
Dibromoacetic Acid	36 µg/L No EPA limit set worst single sample: 45.9 µg/L	61/62	SYR4	2012–2019
Copper	517.25 µg/L 40% of the EPA limit 1300 µg/L worst single sample: 834 µg/L	60/60	SYR4	2012–2018
Bromodichloromethane	39.48 µg/L No EPA limit set worst single sample: 56.6 µg/L	59/63	SYR4	2012–2019
Bromoform	97.25 µg/L No EPA limit set worst single sample: 147 µg/L	59/63	SYR4	2012–2019
Dibromochloromethane	86 µg/L No EPA limit set worst single sample: 89.7 µg/L	59/63	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	51.2 µg/L 85% of the EPA limit 60 µg/L worst single sample: 58 µg/L	56/62	SYR4	2012–2019
Dichloroacetic Acid	7.58 µg/L No EPA limit set worst single sample: 9.9 µg/L	48/62	SYR4	2012–2019
Monobromoacetic Acid	5.4 µg/L No EPA limit set worst single sample: 6.2 µg/L	46/62	SYR4	2012–2019
Chloroform	24.04 µg/L No EPA limit set worst single sample: 31.2 µg/L	45/63	SYR4	2012–2019
Nitrate-Nitrite	525 µg/L 5.3% of the EPA limit 10000 µg/L worst single sample: 530 µg/L	22/22	SYR4	2012–2019
Lead	0.0018 mg/L 12% of the EPA limit 0.0150 mg/L	15/15	LCR	2024
Trichloroacetic Acid	4.517 µg/L No EPA limit set worst single sample: 5 µg/L	15/62	SYR4	2012–2019
Monochloroacetic Acid	2.9 µg/L No EPA limit set	6/62	SYR4	2012–2019
Combined Radium (-226 And -228)	0.9605 pCi/L 19% of the EPA limit 5 pCi/L worst single sample: 0.9900 pCi/L	2/2	SYR4	2012–2017
Gross Alpha, Excl. Radon And U	1.05525 pCi/L 7% of the EPA limit 15 pCi/L worst single sample: 1.072 pCi/L	2/2	SYR4	2012–2017
Gross Beta Particle Activity	9.18865 pCi/L No EPA limit set worst single sample: 9.517 pCi/L	2/2	SYR4	2012–2017
Arsenic	3.4 µg/L 34% of the EPA limit 10 µg/L	1/1	SYR4	2012
Barium	180 µg/L 9% of the EPA limit 2000 µg/L	1/1	SYR4	2012
Combined Uranium	1.6 µg/L 5.3% of the EPA limit 30 µg/L	1/2	SYR4	2012–2017
Fluoride	250 µg/L 6.3% of the EPA limit 4000 µg/L	1/1	SYR4	2012
Lead	7.1 µg/L 47% of the EPA limit 15 µg/L	1/60	SYR4	2012–2018

64 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDinosebDiquatEthylbenzeneGlyphosateHfpo-DaMercuryNetfosaaNfdhaNmefosaaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: FREDERICK
Phone: 580-335-7551
Email: [email protected]

Frequently asked questions about Frederick

Is Frederick tap water safe to drink?

EPA monitoring detected 25 contaminants in Frederick'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 Frederick's water?

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

How many people does Frederick serve?

Frederick reports serving 3,940 people in Oklahoma, per its EPA record.

Has Frederick had any water quality violations?

The EPA has 801 violations on file for Frederick, of which 720 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.