States ›Oklahoma ›Grady County ›Chickasha

Chickasha, OK Tap Water Quality 2026

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

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

Main Utility: Chickasha Municipal Authority PWSID: OK1010821 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 3.75 ppb, 25% of the action level and no violations are open. No PFAS was detected.

C

Chickasha earns a C for water quality

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

Lead: 3.75 ppb — 25% of the federal action level
PFAS tested, none detected
38 violations since 2015, 32 health-based
No violations currently open
Chickasha's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 3.75 ppb — 25% of the federal action level
✓ Lower lead than 22% of Oklahoma utilities
Population Served
15948
~7028 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
38 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
25% of EPA action level
3.75 ppb
Action level: 15 ppb
The 90th-percentile lead result is 3.75 ppb, 25% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Addressed
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2024 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2023 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2023 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2023 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2023 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2022 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2021 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2021 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2021 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2021 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2021 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2021 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2021 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2020 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2020 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2020 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2020 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2019 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2019 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2019 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2019 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2019 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2019 Resolved
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.1 MG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.098 MG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2016 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2016 Archived
TTHM MCL EXCEEDANCE 0.086 MG/L 0.080 mg/L 2015 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2015 Resolved
TTHM MCL EXCEEDANCE 0.097 MG/L 0.080 mg/L 2015 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.084 MG/L 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.115 MG/L 0.080 mg/L 2015 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

38 violations are on record since 2015, of which 32 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Chickasha Municipal Authority
PWSID OK1010821
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 15,948
Service connections 7,028
Systems serving this area 4
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Chickasha tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 3.75 ppb, 25% of the action level.
Does Chickasha water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Chickasha? ▼
Chickasha Municipal Authority (PWSID OK1010821), one of 4 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 2026-01-30. Inspectors recorded 1 significant deficiency.

What Should Chickasha 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.

Nearby Cities in Oklahoma

Tuttle, Ok Tap Water Quality 2026 Grady Rush Springs, Ok Tap Water Quality 2026 Grady Minco, Ok Tap Water Quality 2026 Grady Ninnekah, Ok Tap Water Quality 2026 Grady Verden, Ok Tap Water Quality 2026 Grady Alex, Ok Tap Water Quality 2026 Grady