States ›Oklahoma ›Wagoner County ›Coweta

Coweta, OK Tap Water Quality 2026

Water quality report for Coweta, OK — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Coweta's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Coweta Pwa PWSID: OK1021509 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. No PFAS was detected.

C

Coweta earns a C for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: not detected
PFAS tested, none detected
91 violations since 2015, 41 health-based
No violations currently open
Coweta's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Oklahoma utilities
Population Served
7002
~6123 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
91 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Unaddressed
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.062 MG/L 0.060 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.087 MG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.093 MG/L 0.080 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.107 MG/L 0.080 mg/L 2025 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2025 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2025 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.131 MG/L 0.060 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.099 MG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.133 MG/L 0.080 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.14 MG/L 0.080 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.085 MG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.131 MG/L 0.080 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.119 MG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.135 MG/L 0.080 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2024 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.118 MG/L 0.060 mg/L 2024 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.081 MG/L 0.060 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.139 MG/L 0.080 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.134 MG/L 0.080 mg/L 2024 Archived
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Archived
Consumer Confidence Rule OTHER — — 2024 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.07 MG/L 0.060 mg/L 2024 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.089 MG/L 0.060 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.121 MG/L 0.080 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.127 MG/L 0.080 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.099 MG/L 0.080 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.095 MG/L 0.080 mg/L 2024 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Resolved
TTHM MCL EXCEEDANCE 0.088 MG/L 0.080 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.094 MG/L 0.080 mg/L 2024 Archived
Glyphosate MONITORING AND REPORTING — 0.7 mg/L 2024 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2024 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2024 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2023 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
TTHM MCL EXCEEDANCE 0.094 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.099 MG/L 0.080 mg/L 2023 Archived
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2023 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2023 Resolved
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.09 MG/L 0.080 mg/L 2023 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Resolved
Glyphosate MONITORING AND REPORTING — 0.7 mg/L 2023 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2023 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2023–2025 Archived
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2023–2025 Archived
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2023–2025 Archived
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2023–2025 Archived
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2023–2025 Archived
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2023–2025 Archived
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2023–2025 Archived
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2023–2025 Archived
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2023–2025 Archived
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2023–2025 Archived
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2023–2025 Archived
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2023–2025 Archived
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2023–2025 Archived
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2023–2025 Archived
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2023–2025 Archived
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2023–2025 Archived
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2023–2025 Archived
Benzene MONITORING AND REPORTING — 0.005 mg/L 2023–2025 Archived
Toluene MONITORING AND REPORTING — 1 mg/L 2023–2025 Archived
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2023–2025 Archived
Styrene MONITORING AND REPORTING — 0.1 mg/L 2023–2025 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2020 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2020 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.074 MG/L 0.060 mg/L 2020 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.061 MG/L 0.060 mg/L 2020 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2020–2025 Archived
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2020–2025 Archived
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2020–2025 Archived
Gross Beta Particle Activity MONITORING AND REPORTING — 4 mrem/yr 2020–2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.086 MG/L 0.060 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.076 MG/L 0.060 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.079 MG/L 0.060 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.069 MG/L 0.060 mg/L 2019 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2019 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.073 MG/L 0.060 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.08 MG/L 0.060 mg/L 2019 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

91 violations are on record since 2015, of which 41 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Coweta Pwa
PWSID OK1021509
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 7,002
Service connections 6,123
Systems serving this area 3
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Coweta tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Coweta water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Coweta? ▼
Coweta Pwa (PWSID OK1021509), one of 3 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2025-10-14. Inspectors recorded 4 significant deficiencies.

What Should Coweta Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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