County · Oregon
Wasco County, Oregon: drinking water records
This overview covers 8 ZIP codes and 23 community water systems in Wasco 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 |
|---|---|---|---|---|---|
| Chenowith PUD OR4100867 | 4,500 | 240 | 0 | 1 | 2.9 ppb |
| The Dalles, City of OR4100869 | 13,010 | 360 | 0 | 0 | 0.2 ppb |
| Dufur, City of OR4100261 | 610 | 0 | 0 | 1 | 1 ppb |
| Young Life OR4101246 | 497 | 0 | 0 | 6 | 2.3 ppb |
| Maupin, City of OR4100510 | 420 | 0 | 0 | 1 | 1 ppb |
| Simnasho Schoolie 104101102 | 350 | 0 | 0 | 12 | 4.5 ppb |
| Hazel Dell Orchard OR4105553 | 260 | 0 | 0 | 1 | 0 ppb |
| Tygh Valley Water District OR4100912 | 218 | 0 | 0 | 1 | 1.3 ppb |
| View Point Trailer Court OR4190269 | 160 | 0 | 0 | 2 | 1.1 ppb |
| Sportsmans Park Water Assn OR4100910 | 150 | 0 | 0 | 1 | 0 ppb |
| Pine Grove Water Dist (Wasco) OR4101122 | 140 | 0 | 0 | 1 | 0.4 ppb |
| Pinewood Mobile Manor OR4100872 | 130 | 0 | 0 | 10 | 0.3 ppb |
| Sidwalter 104101101 | 130 | 0 | 0 | 5 | 0 ppb |
| Tooley Water District OR4100911 | 97 | 0 | 0 | 9 | 0.7 ppb |
| BIA Celilo Village 104101133 | 75 | 0 | 0 | 8 | 6.2 ppb |
| Shaniko Water System OR4105384 | 38 | 0 | 0 | 2 | 2.1 ppb |
| Dufur, South Basin OR4101216 | 33 | 0 | 0 | 1 | 3 ppb |
| Barlow Water District OR4100909 | 900 | 0 | 0 | 0 | 0 ppb |
| Mosier, City of OR4100543 | 468 | 0 | 0 | 0 | 0 ppb |
| Foley Lakes Mobile Home Park OR4100871 | 300 | 0 | 0 | 0 | 3.3 ppb |
| Wamic Water Association OR4100931 | 130 | 0 | 0 | 0 | 1.3 ppb |
| Antelope, City of OR4100042 | 46 | 0 | 0 | 0 | 1.1 ppb |
| Rowena Dell Water System OR4105372 | 30 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Wasco 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.