States ›Oklahoma ›Osage County ›Barnsdall

Barnsdall, OK Tap Water Quality 2026

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

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

Main Utility: Osage Co Rwd # 5 PWSID: OK3005721 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.70 ppb, 11% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Barnsdall earns a C for water quality

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

Lead: 1.70 ppb — 11% of the federal action level
PFAS never sampled at this system
134 violations since 2015, 112 health-based
No violations currently open
Barnsdall's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.70 ppb — 11% of the federal action level
✓ Lower lead than 60% of Oklahoma utilities
Population Served
654
~191 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
0
134 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
11% of EPA action level
1.70 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.70 ppb, 11% 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
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.064 MG/L 0.060 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.063 MG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.107 MG/L 0.080 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.105 MG/L 0.080 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.078 MG/L 0.060 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.075 MG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.109 MG/L 0.080 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.106 MG/L 0.080 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2025 Unaddressed
TTHM MONITORING AND REPORTING — 0.080 mg/L 2025 Unaddressed
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.073 MG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.104 MG/L 0.080 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.069 MG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.105 MG/L 0.080 mg/L 2025 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2024 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Addressed
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Addressed
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.072 MG/L 0.060 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.102 MG/L 0.080 mg/L 2024 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2024 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.067 MG/L 0.060 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.096 MG/L 0.080 mg/L 2024 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2024 Resolved
TTHM MCL EXCEEDANCE 0.084 MG/L 0.080 mg/L 2024 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2024 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2024 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023–2024 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023–2024 Resolved
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2023 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023 Resolved
TTHM MCL EXCEEDANCE 0.095 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.084 MG/L 0.080 mg/L 2023 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023 Resolved
TTHM MCL EXCEEDANCE 0.12 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.1 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.098 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.122 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.095 MG/L 0.080 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.123 MG/L 0.080 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.093 MG/L 0.080 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.121 MG/L 0.080 mg/L 2022 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.076 MG/L 0.060 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.11 MG/L 0.080 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.097 MG/L 0.080 mg/L 2022 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.114 MG/L 0.060 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.116 MG/L 0.080 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.106 MG/L 0.080 mg/L 2022 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.119 MG/L 0.060 mg/L 2021 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.087 MG/L 0.060 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.112 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.132 MG/L 0.080 mg/L 2021 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.115 MG/L 0.060 mg/L 2021 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.123 MG/L 0.060 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.132 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.108 MG/L 0.080 mg/L 2021 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.116 MG/L 0.060 mg/L 2021 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.119 MG/L 0.060 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.157 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.103 MG/L 0.080 mg/L 2021 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.113 MG/L 0.060 mg/L 2021 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.145 MG/L 0.060 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.129 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.165 MG/L 0.080 mg/L 2021 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2020–2021 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2020–2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.15 MG/L 0.060 mg/L 2020 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.107 MG/L 0.060 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.125 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.155 MG/L 0.080 mg/L 2020 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.167 MG/L 0.060 mg/L 2020 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.131 MG/L 0.060 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.134 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.167 MG/L 0.080 mg/L 2020 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.149 MG/L 0.060 mg/L 2020 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.13 MG/L 0.060 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.156 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.143 MG/L 0.080 mg/L 2020 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.124 MG/L 0.060 mg/L 2020 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.118 MG/L 0.060 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.151 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.13 MG/L 0.080 mg/L 2020 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.088 MG/L 0.060 mg/L 2019 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.085 MG/L 0.060 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.141 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.117 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.133 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.104 MG/L 0.080 mg/L 2019 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.063 MG/L 0.060 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.106 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2019 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.061 MG/L 0.060 mg/L 2019 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.062 MG/L 0.060 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.105 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2019 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.101 MG/L 0.060 mg/L 2018 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.083 MG/L 0.060 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.126 MG/L 0.080 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.141 MG/L 0.080 mg/L 2018 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.076 MG/L 0.060 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.161 MG/L 0.080 mg/L 2018 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.08 MG/L 0.060 mg/L 2018 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.097 MG/L 0.060 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.189 MG/L 0.080 mg/L 2017 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.064 MG/L 0.060 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.157 MG/L 0.080 mg/L 2017 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.062 MG/L 0.060 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.183 MG/L 0.080 mg/L 2017 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.068 MG/L 0.060 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.158 MG/L 0.080 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.246 MG/L 0.080 mg/L 2016 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.096 MG/L 0.060 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.213 MG/L 0.080 mg/L 2016 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.118 MG/L 0.060 mg/L 2016 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.147 MG/L 0.060 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.22 MG/L 0.080 mg/L 2016 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.091 MG/L 0.060 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.203 MG/L 0.080 mg/L 2016 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.135 MG/L 0.060 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 0.172 MG/L 0.080 mg/L 2015 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.127 MG/L 0.060 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 0.154 MG/L 0.080 mg/L 2015 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.08 MG/L 0.060 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 0.096 MG/L 0.080 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 0.121 MG/L 0.080 mg/L 2015 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.077 MG/L 0.060 mg/L 2015 Archived
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

134 violations are on record since 2015, of which 112 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Osage Co Rwd # 5
PWSID OK3005721
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 654
Service connections 191
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Barnsdall tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.70 ppb, 11% of the action level.
Does Barnsdall 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 Barnsdall? ▼
Osage Co Rwd # 5 (PWSID OK3005721), one of 2 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2025-08-14. Inspectors recorded 1 significant deficiency.

What Should Barnsdall 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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