West Virginia
Water quality data from the EPA Safe Drinking Water Information System
Water Systems
4,357
Active public water systems
Population Served
1.60M
Residents with piped water
Lead Violations
42
Systems exceeding 15 ppb
Copper Violations
102
Lead & Copper Rule
Average Lead Level
EPA Action Level: 15 ppb
MCLG (health goal): 0 ppb
Average across 945 systems with reported lead data.
Violations Detected
144 water systems in West Virginia have reported violations under the Lead and Copper Rule. These utilities are required to notify customers and take corrective action.
Water Systems: Highest Lead Levels
| System Name | City | Population | Lead Level | Status | Sample Date |
|---|---|---|---|---|---|
| CHARLESTON | 13,105 | 12.00 ppb | OK | 1995-12-31 | |
| VIENNA | 12,507 | 8.80 ppb | OK | 2025-06-30 | |
| MONTGOMERY | 13,463 | 4.00 ppb | OK | 2001-12-31 | |
| MARTINSBURG | 34,786 | 3.30 ppb | OK | 2022-12-31 | |
| CLARKSBURG | 18,006 | 3.30 ppb | OK | 2025-12-31 | |
| LEWISBURG | 12,065 | 3.30 ppb | OK | 2025-12-31 | |
| MARTINSBURG | 34,586 | 2.90 ppb | OK | 2024-12-31 | |
| MARTINSBURG | 16,250 | 2.55 ppb | OK | 2025-12-31 | |
| FAIRMONT | 30,586 | 2.30 ppb | OK | 2025-12-31 | |
| PALESTINE | 34,251 | 1.60 ppb | OK | 2025-12-31 | |
| SAINT ALBANS | 13,758 | 1.30 ppb | OK | 2022-12-31 | |
| CHARLESTON | 98,647 | 1.00 ppb | OK | 2024-12-31 | |
| CHARLESTON | 20,562 | 1.00 ppb | OK | 2025-06-30 | |
| TRIADELPHIA | 10,328 | 1.00 ppb | OK | 2021-12-31 | |
| WASHINGTON | 10,377 | 0.95 ppb | OK | 2024-12-31 |
Showing top 15 of 921 systems with lead data. Action level: 15 ppb.
Systems With Active Violations
These water systems have exceeded EPA limits and must take corrective action.
MARTINSBURG · Pop. 34,786
Lead: 3.30 ppb (2022-12-31)
KENOVA · Pop. 11,192
Lead: 0.00 ppb (2025-12-31)
WASHINGTON · Pop. 10,377
Lead: 0.95 ppb (2024-12-31)
Water Source Types
Air Quality
GoodAvg AQI
47.6
PM2.5
7.1 µg/m³
Unhealthy Days
10
Primary Pollutant
Ozone
Source: EPA AirNow & American Lung Association 2024 State of the Air. AQI scale: 0–50 Good · 51–100 Moderate · 101–150 Sensitive Groups · 151+ Unhealthy.
PFAS Contamination
Moderate DetectionPFAS (per- and polyfluoroalkyl substances), known as “forever chemicals,” are a group of synthetic chemicals that persist indefinitely in the environment and human body. The EPA set a maximum contaminant level (MCL) of 4 parts per trillion (ppt) for PFOA and PFOS in April 2024. View national PFAS tracker →
Systems Tested
102
PFAS Detected
42
Detection Rate
41.2%
Exceeding MCL (4 ppt)
12(11.8%)
Highest recorded level: 185 ppt (EPA MCL: 4 ppt). DuPont Washington Works (Parkersburg) is one of the most notorious PFAS contamination sites in the US; C8/PFOA contamination of Ohio River and local water supplies