County · West Virginia
Jefferson County, West Virginia: drinking water records
This overview covers 8 ZIP codes and 12 community water systems in Jefferson County. It also stands in for 1 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Charles Town Utilities WV3301905 | 15,220 | 120 | 0 | 7 | 0.6 ppb |
| Wvaw - Walnut Grove Utilities WV3301942 | 7,250 | 540 | 7 | 3 | 3 ppb |
| Corporation of Shepherdstown WV3301933 | 4,300 | 120 | 3 | 0 | 1.7 ppb |
| Corporation of Harpers Ferry WV3301912 | 2,122 | 0 | 0 | 3 | 2.9 ppb |
| Wvaw - the Mountain Water System WV3301963 | 976 | 0 | 0 | 1 | 1 ppb |
| Charles Town Utl-Glen Haven Utilities WV3301909 | 195 | 0 | 0 | 2 | 3 ppb |
| Wvaw - Deerfield Village Subdivision WV3301979 | 132 | 0 | 0 | 9 | 2 ppb |
| Wvaw - Cave Quarter Utility WV3301904 | 126 | 0 | 0 | 1 | 1 ppb |
| Potomac Farms Water Co WV3301947 | 27 | 0 | 0 | 16 | 2 ppb |
| Charles Town Utl-Cavaland Subdivision WV3301972 | 107 | 0 | 0 | 0 | 2 ppb |
| Leights MHP WV3301920 | 78 | 0 | 0 | 0 | 0.7 ppb |
| Russells MHP WV3301929 | 75 | 0 | 0 | 0 | 1 ppb |
ZIP reports in Jefferson County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 25446.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.