States ›Oklahoma ›Kay County ›Blackwell

Blackwell, OK Tap Water Quality 2026

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

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

Main Utility: Blackwell Municipal Authority PWSID: OK1021101 Updated: 2026 Q2
✅

No federal limits exceeded on record

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

B

Blackwell earns a B for water quality

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

Lead: not detected
PFAS tested, none detected
43 violations since 2015, 28 health-based
No violations currently open
Blackwell'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
6071
~3136 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
43 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
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2025 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2025 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
TTHM MCL EXCEEDANCE 0.085 MG/L 0.080 mg/L 2023 Resolved
TTHM MCL EXCEEDANCE 0.082 MG/L 0.080 mg/L 2022 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2022 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2021 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2020 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2020 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2020 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2020 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2020 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2019 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 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 0.089 MG/L 0.080 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.096 MG/L 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.094 MG/L 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.1 MG/L 0.080 mg/L 2018 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.096 MG/L 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.099 MG/L 0.080 mg/L 2017 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
TTHM MCL EXCEEDANCE 0.105 MG/L 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.119 MG/L 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.125 MG/L 0.080 mg/L 2017 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.114 MG/L 0.080 mg/L 2016 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
TTHM MCL EXCEEDANCE 0.118 MG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.122 MG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.088 MG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.104 MG/L 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.103 MG/L 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.09 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

43 violations are on record since 2015, of which 28 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Blackwell Municipal Authority
PWSID OK1021101
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 6,071
Service connections 3,136
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Blackwell tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Blackwell water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Blackwell? ▼
Blackwell Municipal Authority (PWSID OK1021101), one of 2 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 2026-03-16. No significant deficiencies were recorded.

What Should Blackwell 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

Ponca City, Ok Tap Water Quality 2026 Kay Tonkawa, Ok Tap Water Quality 2026 Kay Newkirk, Ok Tap Water Quality 2026 Kay White Eagle, Ok Tap Water Quality 2026 Kay Tonkawa Tribal Housing, Ok Tap Water Quality 2026 Kay Braman, Ok Tap Water Quality 2026 Kay