County · Oklahoma
Jefferson County, Oklahoma: drinking water records
This overview covers 5 ZIP codes and 6 community water systems in Jefferson 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 |
|---|---|---|---|---|---|
| Jefferson Co Cons Rwd #1 OK3003401 | 8,398 | 180 | 1 | 14 | 0 ppb |
| Waurika Public Works Authority OK1011201 | 2,100 | 0 | 0 | 113 | 0 ppb |
| Ryan Utilities Authority OK3003405 | 800 | 0 | 0 | 104 | 0 ppb |
| Terral OK2003405 | 386 | 0 | 0 | 2 | 0.8 ppb |
| Cornish OK3003404 | 41 | 0 | 0 | 1 | 0.3 ppb |
| Ringling OK2003404 | 1,200 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Jefferson 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.