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Hydro, OK Tap Water Quality 2026

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

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

Main Utility: Hydro Pwa PWSID: OK2000812 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 6.40 ppb, 43% of the action level and no violations are open. No PFAS was detected.

B

Hydro earns a B for water quality

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

Lead: 6.40 ppb — 43% of the federal action level
PFAS tested, none detected
35 violations since 2015, 4 health-based
No violations currently open
Hydro's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 6.40 ppb — 43% of the federal action level
✓ Lower lead than 10% of Oklahoma utilities
Population Served
325
~551 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
35 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
43% of EPA action level
6.40 ppb
Action level: 15 ppb
The 90th-percentile lead result is 6.40 ppb, 43% 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
E. COLI MONITORING AND REPORTING — 0 2025 Unaddressed
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2025 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2025 Resolved
E. COLI MONITORING AND REPORTING — 0 2024 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2024 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Addressed
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Addressed
E. COLI MONITORING AND REPORTING — 0 2024 Resolved
Consumer Confidence Rule OTHER — — 2024 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2024 Resolved
E. COLI MONITORING AND REPORTING — 0 2023 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Resolved
E. COLI MONITORING AND REPORTING — 0 2023 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
E. COLI MONITORING AND REPORTING — 0 2021 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Resolved
E. COLI MONITORING AND REPORTING — 0 2021 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2021 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2021 Resolved
E. COLI MONITORING AND REPORTING — 0 2021 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2021 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2021 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2021 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2021 Resolved
E. COLI MONITORING AND REPORTING — 0 2020 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2020 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2016 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
Nitrate-Nitrite MCL EXCEEDANCE 15 MG/L — 2016 Resolved
Nitrate-Nitrite MCL EXCEEDANCE 16 MG/L — 2016 Resolved
Nitrate-Nitrite MCL EXCEEDANCE 11 MG/L — 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

35 violations are on record since 2015, of which 4 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Hydro Pwa
PWSID OK2000812
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 325
Service connections 551
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Hydro tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 6.40 ppb, 43% of the action level.
Does Hydro water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Hydro? ▼
Hydro Pwa (PWSID OK2000812). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-11-06. No significant deficiencies were recorded.

What Should Hydro 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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