County · Washington
Adams County, Washington: drinking water records
This overview covers 5 ZIP codes and 31 community water systems in Adams County. It also stands in for 1 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 |
|---|---|---|---|---|---|
| Othello Water Department WA5364850 | 8,755 | 420 | 0 | 0 | 0 ppb |
| Saddle Mountain Water Assoc. WA5375200 | 219 | 0 | 0 | 1 | 2.8 ppb |
| Ritzville Water Department WA5372700 | 1,725 | 0 | 0 | 0 | 0 ppb |
| Lind Town of WA5347350 | 903 | 0 | 0 | 0 | 5.2 ppb |
| Adams County Water Dist #1 WA5322525 | 870 | 0 | 0 | 0 | 0 ppb |
| Othello Manor LLC WA5364845 | 400 | 0 | 0 | 0 | 0 ppb |
| Golden Plains MHP #1 WA5389060 | 360 | 0 | 0 | 0 | 0 ppb |
| Washtucna Water Department WA5393450 | 250 | 0 | 0 | 0 | 0 ppb |
| Summerset West Water Association WA5385080 | 240 | 0 | 0 | 0 | 0 ppb |
| Othello Country Club Water Assn WA5364830 | 208 | 0 | 0 | 0 | 0 ppb |
| Radar Community LLC WA5370690 | 200 | 0 | 0 | 0 | 0 ppb |
| Bird Dog Family Ltd Partnership II WA5352172 | 186 | 0 | 0 | 0 | 0 ppb |
| Warden Hutterian Brethren 1 WA5392829 | 171 | 0 | 0 | 0 | 0 ppb |
| Sportsman Trailer Park WA5383116 | 151 | 0 | 0 | 0 | 0 ppb |
| Stahl Hutterian Brethren WA5307764 | 122 | 0 | 0 | 0 | 0 ppb |
| Hatton Town of WA5331600 | 105 | 0 | 0 | 0 | 0 ppb |
| Sunburst Estates Water Assn WA5385201 | 100 | 0 | 0 | 0 | 1 ppb |
| Meadow Lane Water Assn WA5353190 | 98 | 0 | 0 | 0 | 2.5 ppb |
| Fairview Domestic Water Assn WA5324500 | 89 | 0 | 0 | 0 | 0 ppb |
| Hi Lo Homeowners Assn WA5385203 | 87 | 0 | 0 | 0 | 0 ppb |
| West Side Mobile Court WA5394910 | 80 | 0 | 0 | 0 | 0 ppb |
| Sect 11 Div 1 Ridgeview Water Assn WA5372410 | 79 | 0 | 0 | 0 | 0 ppb |
| Schoonover Hutterian Brethren WA53AB043 | 73 | 0 | 0 | 0 | 0 ppb |
| Rainier Tracts Water Assn WA5370910 | 61 | 0 | 0 | 0 | 1 ppb |
| Basin View Water Association WA5304530 | 60 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Adams County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 99105.
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.