County · Wyoming
Weston County, Wyoming: drinking water records
This overview covers 3 ZIP codes and 9 community water systems in Weston 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 |
|---|---|---|---|---|---|
| Newcastle, City of WY5600256 | 3,595 | 300 | 0 | 0 | 1 ppb |
| Upton, Town of WY5600140 | 1,100 | 0 | 0 | 1 | 2 ppb |
| Osage Water District WY5600038 | 200 | 0 | 0 | 1 | 3 ppb |
| Water Unlimited, Incorporated WY5600132 | 144 | 0 | 0 | 1 | 0 ppb |
| Salt Creek Water District WY5600133 | 600 | 0 | 0 | 0 | 0 ppb |
| West End Water District WY5601032 | 225 | 0 | 0 | 0 | 2 ppb |
| Cambria I&s District WY5601028 | 148 | 0 | 0 | 0 | 0 ppb |
| Canyon Improvement & Service District WY5601632 | 79 | 0 | 0 | 0 | 4 ppb |
| Sunset Ranch Water District WY5601633 | 70 | 0 | 0 | 0 | 1 ppb |
ZIP reports in Weston 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.