West Virginia · drinking water · SDWIS through latest publish

Williamson Utility Board Water Quality — Williamson, West Virginia

PWSID WV3303009 · Surface waterMunicipal

2,660 people served. 9 health-based SDWIS violations recorded in the past 5 years. 20 remain unresolved. Last cited 1 year ago.

ALL SDWIS VIOLATIONS · 20242026 (annual count)
Bar chart of annual values from 2024 to 2026, in violations. Most recent year (2026): 0 violations.21 violations'24'25'260 violations
Anomaly engine

Active signals

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 0300

Unresolved Long Term 1 Enhanced SWTR violation cited in 2025 (contaminant 0300).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 0300

Unresolved Long Term 1 Enhanced SWTR violation cited in 2025 (contaminant 0300).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 0300

Unresolved Long Term 1 Enhanced SWTR violation cited in 2025 (contaminant 0300).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 0300

Unresolved Long Term 1 Enhanced SWTR violation cited in 2025 (contaminant 0300).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Contaminant 030010 citations
  • Contaminant 75008 citations
  • Contaminant 08006 citations
  • Contaminant 70003 citations
  • Contaminant 02003 citations
Violation history

What's On The SDWIS Record

Health-based violations exceed an MCL or treatment-technique standard. Monitoring violations are reporting failures with no measured exceedance — they tell you the system isn't fully transparent, not that the water is unsafe today.

HEALTH-BASED · CONTAMINANT 0300UNRESOLVED

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300UNRESOLVED

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300UNRESOLVED

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300UNRESOLVED

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300UNRESOLVED

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300UNRESOLVED

2025 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

OTHER · CONTAMINANT 7500UNRESOLVED

2025 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500UNRESOLVED

2025 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7000

2024 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7000

2024 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

OTHER · CONTAMINANT 7000

2024 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER; returned to compliance

CONTAMINANT CODE 7000

MONITORING · CONTAMINANT 0200UNRESOLVED

2024 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2024 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0200UNRESOLVED

2024 · Contaminant 0200 · Surface Water Treatment Rule

Failure to monitor as scheduled

CONTAMINANT CODE 0200

MONITORING · CONTAMINANT 0300UNRESOLVED

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300UNRESOLVED

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

MONITORING · CONTAMINANT 0300UNRESOLVED

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Failure to monitor as scheduled

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0800UNRESOLVED

2024 · Contaminant 0800 · Long Term 2 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0800

HEALTH-BASED · CONTAMINANT 0800UNRESOLVED

2024 · Contaminant 0800 · Long Term 2 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0800

HEALTH-BASED · CONTAMINANT 0800UNRESOLVED

2024 · Contaminant 0800 · Long Term 2 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0800

HEALTH-BASED · CONTAMINANT 0800UNRESOLVED

2024 · Contaminant 0800 · Long Term 2 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0800

HEALTH-BASED · CONTAMINANT 0800UNRESOLVED

2024 · Contaminant 0800 · Long Term 2 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0800

HEALTH-BASED · CONTAMINANT 0800UNRESOLVED

2024 · Contaminant 0800 · Long Term 2 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0800

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

OTHER · CONTAMINANT 7500

2024 · Contaminant 7500 · Volatile Organic Chemical Rule

OTHER; returned to compliance

CONTAMINANT CODE 7500

Equity context · ACS 2018-2022 · USEPA-clone EJ disparity

Who Drinks This Water

Williamson, West Virginia (Census place; block-group disparity scores aggregated by centroid containment): a service population of 3,035. Local disparity score for pm2.5 (fine particulate) sits well below the reference (26). Why we surface this →

POPULATION SHARE
32.0%

Low-income

POPULATION SHARE
15.6%

People of color

POPULATION SHARE
8.2%

Under age 5

POPULATION SHARE
18.2%

Over age 64

NATIONAL PERCENTILE · vs all US block groups (population-weighted; ranked against the national EJScreen indicator distribution)

  • PM2.5 (fine particulate)Health riskFine inhalable particles 2.5 micrometers or smaller. They travel deep into the lungs and into the bloodstream — linked to asthma, heart disease, stroke, and premature death.15below the national median
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.11below the national median
  • Nitrogen dioxide (NO₂)Health riskA tailpipe and combustion gas. Concentrates near busy roads and industrial sites; raises risk of airway inflammation, asthma, and lower respiratory infections in children.14below the national median
  • Diesel particulateHealth riskSoot from diesel engines (trucks, trains, ports, construction). EPA classifies it as a likely human carcinogen and a major driver of childhood asthma near freight corridors.19below the national median
  • Toxic releases (RSEI)Health riskEPA's Risk-Screening Environmental Indicators score — weights TRI chemical releases by toxicity, where they go, and how many people are nearby. Higher means greater modeled cancer and chronic-health risk.1below the national median
  • Traffic proximityHealth riskPopulation-weighted distance to high-volume roads. Living close to heavy traffic raises exposure to PM2.5, NO₂, and diesel exhaust — and the cardiovascular and asthma risks that follow.16below the national median
  • Lead-paint risk (pre-1960 housing)Health riskShare of housing built before 1960, when lead-based paint was common. Dust from deteriorating paint is the leading cause of childhood lead poisoning, which permanently impairs cognitive development.78above the national median
  • Superfund site proximityHealth riskPopulation-weighted distance to NPL Superfund sites — the most contaminated waste sites in the country. Nearby groundwater, soil, and air can carry industrial solvents, metals, and other long-lived contaminants.56near the national median
  • RMP-facility proximityHealth riskDistance to facilities holding chemicals at quantities large enough to require an EPA Risk Management Plan (refineries, fertilizer plants, etc.). These pose acute exposure risk during accidental releases.28below the national median
  • Hazardous-waste site proximityHealth riskDistance to RCRA hazardous-waste handlers (treatment, storage, disposal facilities). Indicates potential exposure to industrial chemicals in air, soil, and groundwater.14below the national median
  • Underground storage tanksHealth riskDensity of underground tanks (gasoline, heating oil, industrial fluids). Leaking tanks are a leading source of benzene and other volatile organic compounds in groundwater drinking-water supplies.84in the highest 20% nationally
  • NPDES wastewater proximityHealth riskDistance to permitted industrial wastewater dischargers. Closer proximity raises exposure to pollutants released into surface waters used for fishing, recreation, and downstream drinking-water intakes.53near the national median
  • Drinking-water non-complianceHealth riskEPA score for public water systems with health-based Safe Drinking Water Act violations. Higher means more residents on systems that recently exceeded safe limits for contaminants like lead, arsenic, or nitrate.85in the highest 20% nationally
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)26well below the reference
Ozone31well below the reference
Nitrogen dioxide (NO₂)24well below the reference
Diesel particulate34well below the reference
Toxic releases (RSEI)2well below the reference
Traffic proximity29well below the reference
Lead-paint risk (pre-1960 housing)116moderately above the reference
Superfund site proximity0well below the reference
RMP-facility proximity0well below the reference
Hazardous-waste site proximity0well below the reference
Underground storage tanks124moderately above the reference
NPDES wastewater proximity86below the reference
Drinking-water non-compliance127moderately above the reference

Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror).

Source. EPA Safe Drinking Water Information System · retrieved 2026-05-07. Reporting period 2024-01-012026-05-07.

What this is not. SDWIS records compliance against federal MCLs — not a direct readout of tap-water concentrations. Active health-based violations are not the same as a current crisis; we link to the EPA record so you can verify return-to-compliance status before forming a conclusion.