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Blackburn, OK Tap Water Quality 2026

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

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

Main Utility: Pawnee Co Rwd #4 PWSID: OK3005913 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 0.90 ppb, 6% of the action level and no violations are open. PFAS has never been sampled at this system.

B

Blackburn earns a B for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 0.90 ppb — 6% of the federal action level
PFAS never sampled at this system
45 violations since 2015, 31 health-based
No violations currently open
Blackburn's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 0.90 ppb — 6% of the federal action level
✓ Lower lead than 89% of Oklahoma utilities
Population Served
70
~372 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
0
45 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
6% of EPA action level
0.90 ppb
Action level: 15 ppb
The 90th-percentile lead result is 0.90 ppb, 6% 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
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2023 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2022 Resolved
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2022 Resolved
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2022 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Resolved
TTHM MCL EXCEEDANCE 0.103 MG/L 0.080 mg/L 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
TTHM MCL EXCEEDANCE 0.118 MG/L 0.080 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.123 MG/L 0.080 mg/L 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.062 MG/L 0.060 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.145 MG/L 0.080 mg/L 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.068 MG/L 0.060 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.157 MG/L 0.080 mg/L 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.08 MG/L 0.060 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.176 MG/L 0.080 mg/L 2020 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.09 MG/L 0.060 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.17 MG/L 0.080 mg/L 2020 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2020 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.173 MG/L 0.080 mg/L 2020 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.079 MG/L 0.060 mg/L 2020 Resolved
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
TTHM MCL EXCEEDANCE 0.158 MG/L 0.080 mg/L 2020 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.13 MG/L 0.080 mg/L 2019 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2019 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2019 Resolved
TTHM MCL EXCEEDANCE 0.133 MG/L 0.080 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.065 MG/L 0.060 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.132 MG/L 0.080 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.125 MG/L 0.080 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.151 MG/L 0.080 mg/L 2018 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2018 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2018 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.062 MG/L 0.060 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.198 MG/L 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.085 MG/L 0.080 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.067 MG/L 0.060 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.098 MG/L 0.080 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.07 MG/L 0.060 mg/L 2016 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

45 violations are on record since 2015, of which 31 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Pawnee Co Rwd #4
PWSID OK3005913
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 70
Service connections 372
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Blackburn tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 0.90 ppb, 6% of the action level.
Does Blackburn water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Blackburn? ▼
Pawnee Co Rwd #4 (PWSID OK3005913). Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2025-11-19. No significant deficiencies were recorded.

What Should Blackburn 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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