County · Oklahoma
Dewey County, Oklahoma: drinking water records
This overview covers 7 ZIP codes and 6 community water systems in Dewey County. It also stands in for 0 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 |
|---|---|---|---|---|---|
| Dewey Co Rwd #2 OK2002202 | 150 | 60 | 0 | 1 | 1.5 ppb |
| Vici OK2002203 | 668 | 0 | 0 | 2 | 0 ppb |
| Leedey OK3002201 | 436 | 0 | 0 | 1 | 0 ppb |
| Seiling OK2002205 | 860 | 0 | 0 | 0 | 0 ppb |
| Taloga OK2002207 | 372 | 0 | 0 | 0 | 1.2 ppb |
| Dewey Co Rwd #1 OK2002201 | 129 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Dewey County
No ZIP report in this county is published yet.
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.