County · Oklahoma
Custer County, Oklahoma: drinking water records
This overview covers 6 ZIP codes and 11 community water systems in Custer 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 |
|---|---|---|---|---|---|
| Clinton OK1010828 | 8,883 | 180 | 1 | 5 | 1.5 ppb |
| Weatherford OK2002002 | 10,833 | 120 | 0 | 0 | 0 ppb |
| Custer County Rwd #3 OK2002040 | 960 | 0 | 0 | 1 | 0 ppb |
| Frontier Development Auth OK3002011 | 437 | 0 | 0 | 1 | 0 ppb |
| Country East MHP OK2002015 | 97 | 0 | 0 | 4 | 0.9 ppb |
| Shady Acres Custer County OK2002023 | 40 | 0 | 0 | 1 | 0 ppb |
| Thomas OK2002001 | 1,238 | 0 | 0 | 0 | 2.5 ppb |
| Arapaho OK3002004 | 748 | 0 | 0 | 0 | 0 ppb |
| Custer City PWS OK2002009 | 393 | 0 | 0 | 0 | 6.5 ppb |
| Butler OK3002001 | 345 | 0 | 0 | 0 | 0 ppb |
| Foss Reservoir Mcd OK1010829 | 12 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Custer 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.