County · Oklahoma
Kay County, Oklahoma: drinking water records
This overview covers 8 ZIP codes and 13 community water systems in Kay 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 |
|---|---|---|---|---|---|
| Blackwell Municipal Authority OK1021101 | 7,668 | 120 | 0 | 22 | 0 ppb |
| Kay Co Rwd #5 (Dale Water Corp) OK3003603 | 765 | 60 | 4 | 23 | 0 ppb |
| Ponca City Mun Water OK1021202 | 27,155 | 120 | 4 | 0 | 0 ppb |
| Tonkawa OK2003603 | 3,299 | 0 | 0 | 1 | 6.4 ppb |
| Kay Co Rwd #1 OK3003605 | 1,765 | 0 | 0 | 1 | 0 ppb |
| Kay County Rural Water District 7 OK3003601 | 920 | 0 | 0 | 3 | 0 ppb |
| Braman OK3003616 | 244 | 0 | 0 | 8 | 0 ppb |
| Kay County Rwd #2 OK3003604 | 50 | 0 | 0 | 1 | 4.6 ppb |
| Newkirk OK2003604 | 2,243 | 0 | 0 | 0 | 0 ppb |
| Kay Co Rwd #3 OK3003602 | 1,000 | 0 | 0 | 0 | 1 ppb |
| Kaw City Water Authority OK2003605 | 372 | 0 | 0 | 0 | 1.6 ppb |
| Kay Electric Cooperative OK2003632 | 2 | 0 | 0 | 0 | 0 ppb |
| Tonkawa Tribe of Oklahoma 062005885 | 400 | 0 | 0 | 0 | not reported |
ZIP reports in Kay 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.