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Tap water quality report

Frederick

EPA monitoring tested this supplier for 89 contaminants and detected 25. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

89
contaminants tested
25
detected
3,940
people served
720
health-based violations
Oklahoma rankingsLead in OklahomaPFAS in Oklahoma
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
0
still open
ViolationTypeStatusPeriod
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).
ContaminantMaxDetection ratePeriod
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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Chlorite
1510 µg/L 151%
of the EPA limit, in the worst sample — 1000 µg/L
 168/192 SYR4 2012–2019
TTHM
274.2 µg/L 343%
of the EPA limit, in the worst sample — 80 µg/L
 62/62 SYR4 2012–2019
Dibromoacetic Acid
45.9 µg/L
No EPA limit set
 61/62 SYR4 2012–2019
Copper
834 µg/L 64%
of the EPA limit 1300 µg/L
 60/60 SYR4 2012–2018
Bromodichloromethane
56.6 µg/L
No EPA limit set
 59/63 SYR4 2012–2019
Bromoform
147 µg/L
No EPA limit set
 59/63 SYR4 2012–2019
Dibromochloromethane
89.7 µg/L
No EPA limit set
 59/63 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
58 µg/L 97%
of the EPA limit 60 µg/L
 56/62 SYR4 2012–2019
Dichloroacetic Acid
9.9 µg/L
No EPA limit set
 48/62 SYR4 2012–2019
Monobromoacetic Acid
6.2 µg/L
No EPA limit set
 46/62 SYR4 2012–2019
Chloroform
31.2 µg/L
No EPA limit set
 45/63 SYR4 2012–2019
Nitrate-Nitrite
530 µg/L 5.3%
of the EPA limit 10000 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
5 µg/L
No EPA limit set
 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)
0.9900 pCi/L 20%
of the EPA limit 5 pCi/L
 2/2 SYR4 2012–2017
Gross Alpha, Excl. Radon And U
1.072 pCi/L 7.1%
of the EPA limit 15 pCi/L
 2/2 SYR4 2012–2017
Gross Beta Particle Activity
9.517 pCi/L
No EPA limit set
 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
fredtreat@pldi.net

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.