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Okarche, OK Tap Water Quality 2026

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

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

Main Utility: Okarche PWSID: OK2003703 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 7.40 ppb, 49% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Okarche earns a C for water quality

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

Lead: 7.40 ppb — 49% of the federal action level
PFAS never sampled at this system
45 violations since 2015, 43 health-based
No violations currently open
Okarche's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 7.40 ppb — 49% of the federal action level
✓ Lower lead than 7% of Oklahoma utilities
Population Served
1141
~641 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
45 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
49% of EPA action level
7.40 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
166.2% of EPA action level
2,160 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 7.40 ppb, 49% 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. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2025 Archived
Nitrate-Nitrite MCL EXCEEDANCE 17 MG/L — 2025 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2025 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2024 Archived
Nitrate-Nitrite MCL EXCEEDANCE 12 MG/L — 2024 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2024 Archived
Nitrate-Nitrite MCL EXCEEDANCE 12 MG/L — 2024 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2023 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2023 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2023 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2023 Archived
Nitrate-Nitrite MCL EXCEEDANCE 12 MG/L — 2022 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2022 Archived
Nitrate-Nitrite MCL EXCEEDANCE 12 MG/L — 2022 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2022 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2021 Archived
Nitrate-Nitrite MCL EXCEEDANCE 15 MG/L — 2021 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2021 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2021 Archived
Nitrate-Nitrite MCL EXCEEDANCE 15 MG/L — 2020 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2020 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2020 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2020 Archived
Nitrate-Nitrite MCL EXCEEDANCE 15 MG/L — 2019 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2019 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2019 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2019 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2018 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2018 Archived
Nitrate-Nitrite MCL EXCEEDANCE 15 MG/L — 2018 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2018 Archived
Nitrate-Nitrite MCL EXCEEDANCE 15 MG/L — 2017 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2017 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2017 Archived
E. COLI MONITORING AND REPORTING — 0 2017 Resolved
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2017 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2016 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2016 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2016 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2016 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2015 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2015 Archived
Consumer Confidence Rule OTHER — — 2015 Resolved
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2015 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 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

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

About the Main Water System

Utility Okarche
PWSID OK2003703
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 1,141
Service connections 641
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Okarche tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 7.40 ppb, 49% of the action level.
Does Okarche 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 Okarche? ▼
Okarche (PWSID OK2003703), one of 2 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-07-16. No significant deficiencies were recorded.

What Should Okarche 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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