County · Ohio
Williams County, Ohio: drinking water records
This overview covers 10 ZIP codes and 12 community water systems in Williams County. It also stands in for 3 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 |
|---|---|---|---|---|---|
| Montpelier Village OH8600912 | 4,280 | 60 | 0 | 1 | 4 ppb |
| Bryan City PWS OH8600012 | 8,729 | 60 | 0 | 0 | 0 ppb |
| Aqua Ohio - Norlick OH8601012 | 345 | 0 | 0 | 1 | 0 ppb |
| Edgerton Village OH8600312 | 1,881 | 0 | 0 | 0 | 4.9 ppb |
| West Unity Village OH8601812 | 1,760 | 0 | 0 | 0 | 1.8 ppb |
| Pioneer Village OH8601312 | 1,449 | 0 | 0 | 0 | 1.7 ppb |
| Stryker Village OH8601712 | 1,259 | 0 | 0 | 0 | 7.1 ppb |
| Edon Village OH8600512 | 783 | 0 | 0 | 0 | 3.3 ppb |
| Aqua Ohio - Seneca OH8601512 | 750 | 0 | 0 | 0 | 0 ppb |
| Williams Co/Hillside Country Living OH8601912 | 225 | 0 | 0 | 0 | 0.5 ppb |
| Oakwood MHP OH8601212 | 180 | 0 | 0 | 0 | 0 ppb |
| North Pine Estates OH8600812 | 50 | 0 | 0 | 0 | 5 ppb |
ZIP reports in Williams 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: 43501, 43505, 43531.
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.