States ›West Virginia ›Mingo County ›Williamson

Williamson, WV Tap Water Quality 2026

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

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

Main Utility: Williamson Utility Board PWSID: WV3303009 Updated: 2026 Q2
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6 violations currently open

Lead was not detected. PFAS has never been sampled at this system.

F

Williamson earns an F for water quality

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

Lead: not detected
PFAS never sampled at this system
27 violations since 2015, 7 health-based
6 violations currently open
Williamson's lead level vs. all West Virginia community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of West Virginia utilities
Population Served
3066
~1226 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
6
6 open of 27 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Public Notice OTHER — — 2025 Unaddressed
Public Notice OTHER — — 2025 Unaddressed
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Archived
Public Notice OTHER — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Long Term 2 Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Long Term 2 Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Long Term 2 Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Long Term 2 Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Long Term 2 Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Long Term 2 Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Consumer Confidence Rule OTHER — — 2024 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Archived
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Archived
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2018 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2018 Resolved
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2017–2019 Archived
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Nitrate MONITORING AND REPORTING — 10 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

6 violations remain open, out of 27 recorded since 2015 (7 health-based).

About the Main Water System

Utility Williamson Utility Board
PWSID WV3303009
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 3,066
Service connections 1,226
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Williamson tap water safe to drink? ▼
No federal limit is exceeded on record. 6 violation(s) remain open.
Does Williamson 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 Williamson? ▼
Williamson Utility Board (PWSID WV3303009), one of 2 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2025-01-15. Inspectors recorded 4 significant deficiencies.

What Should Williamson 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
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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