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Tap water quality report

Washington Co Rwd #7

EPA monitoring tested this supplier for 14 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

14
contaminants tested
14
detected
258
people served
57
health-based violations
Water source
SWP
Ownership
Local government
Counties served
Washington

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.

57
health-based violations
230
violations on file
6
still open
ViolationTypeStatusPeriod
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
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
MCL Health-based Archived 2025-07-01 → 2025-09-30
MCL Health-based Archived 2025-04-01 → 2025-06-30
MCL Health-based Archived 2025-04-01 → 2025-06-30

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
31.37 µg/L
No EPA limit set
worst single sample: 32.8 µg/L
24/24 SYR4 2014–2019
Chloroform
58.205 µg/L
No EPA limit set
worst single sample: 60.8 µg/L
24/24 SYR4 2014–2019
Dibromochloromethane
25.66 µg/L
No EPA limit set
worst single sample: 27.4 µg/L
24/24 SYR4 2014–2019
Dichloroacetic Acid
22.04 µg/L
No EPA limit set
worst single sample: 28.3 µg/L
24/24 SYR4 2014–2019
TTHM
99.88 µg/L 125%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 103 µg/L
24/24 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
41.82 µg/L 70%
of the EPA limit 60 µg/L
worst single sample: 53 µg/L
24/24 SYR4 2014–2019
Trichloroacetic Acid
20.4 µg/L
No EPA limit set
worst single sample: 22 µg/L
21/24 SYR4 2014–2019
Bromoform
5.9825 µg/L
No EPA limit set
worst single sample: 7.04 µg/L
16/24 SYR4 2014–2019
Dibromoacetic Acid
6.2225 µg/L
No EPA limit set
worst single sample: 6.65 µg/L
16/24 SYR4 2014–2019
Copper
2814 µg/L 216%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
worst single sample: 3080 µg/L
15/31 SYR4 2014–2019
Lead
0.0047 mg/L 31%
of the EPA limit 0.0150 mg/L
13/13 LCR 2025
Monobromoacetic Acid
2.014 µg/L
No EPA limit set
worst single sample: 2.08 µg/L
7/24 SYR4 2014–2019
Lead
6 µg/L 40%
of the EPA limit 15 µg/L
1/31 SYR4 2014–2019
Monochloroacetic Acid
4.42 µg/L
No EPA limit set
1/24 SYR4 2014–2019

Utility contact

Contact
WASHINGTON CO RWD #7
Phone
918-440-9638

Frequently asked questions about Washington Co Rwd #7

Is Washington Co Rwd #7 tap water safe to drink?

EPA monitoring detected 14 contaminants in Washington Co Rwd #7'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 Washington Co Rwd #7's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, TTHM, and others. The full list with the level and data source for each is above.

How many people does Washington Co Rwd #7 serve?

Washington Co Rwd #7 reports serving 258 people in Oklahoma, per its EPA record.

Has Washington Co Rwd #7 had any water quality violations?

The EPA has 230 violations on file for Washington Co Rwd #7, of which 57 are health-based (a contaminant limit or required treatment was breached) and 6 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.