States ›Oklahoma ›Payne County ›Yale

Yale, OK Tap Water Quality 2026

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

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

Main Utility: Yale PWSID: OK3006039 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 6.70 ppb, 45% of the action level and no violations are open. PFAS has never been sampled at this system.

B

Yale earns a B for water quality

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

Lead: 6.70 ppb — 45% of the federal action level
PFAS never sampled at this system
85 violations since 2015, 48 health-based
No violations currently open
Yale's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 6.70 ppb — 45% of the federal action level
✓ Lower lead than 8% of Oklahoma utilities
Population Served
907
~759 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
0
85 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
45% of EPA action level
6.70 ppb
Action level: 15 ppb
The 90th-percentile lead result is 6.70 ppb, 45% 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
Chloramine MONITORING AND REPORTING — 4.0 mg/L 2025 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Chloramine MONITORING AND REPORTING — 4.0 mg/L 2025 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2022 Resolved
Consumer Confidence Rule OTHER — — 2022 Resolved
TTHM MCL EXCEEDANCE 0.126 MG/L 0.080 mg/L 2022 Resolved
TTHM MCL EXCEEDANCE 0.105 MG/L 0.080 mg/L 2022 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.114 MG/L 0.080 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.149 MG/L 0.080 mg/L 2021 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2021 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.116 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.165 MG/L 0.080 mg/L 2021 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.108 MG/L 0.080 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.169 MG/L 0.080 mg/L 2021 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2021 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.18 MG/L 0.080 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.122 MG/L 0.080 mg/L 2021 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 0.068 MG/L 0.060 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.195 MG/L 0.080 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.147 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
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.075 MG/L 0.060 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.151 MG/L 0.080 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.193 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
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.082 MG/L 0.060 mg/L 2020 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.069 MG/L 0.060 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.187 MG/L 0.080 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.155 MG/L 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 0.094 MG/L 0.060 mg/L 2020 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.088 MG/L 0.060 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.155 MG/L 0.080 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.176 MG/L 0.080 mg/L 2020 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.072 MG/L 0.060 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.08 MG/L 0.060 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.132 MG/L 0.080 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.163 MG/L 0.080 mg/L 2019 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.064 MG/L 0.060 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.065 MG/L 0.060 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.115 MG/L 0.080 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.141 MG/L 0.080 mg/L 2019 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2019 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.063 MG/L 0.060 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.15 MG/L 0.080 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.123 MG/L 0.080 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.152 MG/L 0.080 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.122 MG/L 0.080 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.138 MG/L 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.128 MG/L 0.080 mg/L 2018 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2018 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2018 Resolved
TTHM MCL EXCEEDANCE 0.141 MG/L 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.134 MG/L 0.080 mg/L 2018 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.134 MG/L 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.118 MG/L 0.080 mg/L 2018 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.099 MG/L 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.13 MG/L 0.080 mg/L 2017 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2017 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.124 MG/L 0.080 mg/L 2017 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2017 Resolved
TTHM MCL EXCEEDANCE 0.132 MG/L 0.080 mg/L 2017 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2016 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2016 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2015 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 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

85 violations are on record since 2015, of which 48 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Yale
PWSID OK3006039
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 907
Service connections 759
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Yale tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 6.70 ppb, 45% of the action level.
Does Yale 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 Yale? ▼
Yale (PWSID OK3006039), 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 2024-07-29. No significant deficiencies were recorded.

What Should Yale Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
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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