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Watonga, OK Tap Water Quality 2026

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

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

Main Utility: Watonga PWSID: OK2000602 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.80 ppb, 12% of the action level and no violations are open. No PFAS was detected.

C

Watonga earns a C for water quality

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

Lead: 1.80 ppb — 12% of the federal action level
PFAS tested, none detected
17 violations since 2015, 8 health-based
No violations currently open
Watonga's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.80 ppb — 12% of the federal action level
✓ Lower lead than 56% of Oklahoma utilities
Population Served
374
~1737 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
17 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
12% of EPA action level
1.80 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.
106.9% of EPA action level
1,390 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 1.80 ppb, 12% 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
E. COLI MONITORING AND REPORTING — 0 2026 Unaddressed
Nitrate-Nitrite MONITORING AND REPORTING — — 2025 Resolved
Nitrate-Nitrite MCL EXCEEDANCE 12 MG/L — 2025 Archived
Nitrate-Nitrite MCL EXCEEDANCE 14 MG/L — 2025 Archived
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2025 Archived
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2022 Resolved
E. COLI MONITORING AND REPORTING — 0 2021 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2021 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2021 Resolved
Nitrate-Nitrite MCL EXCEEDANCE 11 MG/L — 2019 Resolved
Nitrate-Nitrite MCL EXCEEDANCE 11 MG/L — 2018 Resolved
Nitrate-Nitrite MCL EXCEEDANCE 13 MG/L — 2018 Resolved
Nitrate-Nitrite MCL EXCEEDANCE 12 MG/L — 2017 Resolved
E. COLI MONITORING AND REPORTING — 0 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

17 violations are on record since 2015, of which 8 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Watonga
PWSID OK2000602
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 374
Service connections 1,737
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Watonga tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.80 ppb, 12% of the action level.
Does Watonga water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Watonga? ▼
Watonga (PWSID OK2000602). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2026-02-19. No significant deficiencies were recorded.

What Should Watonga 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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