Public Water Systems
4,557 active public water systems in WA, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Vinland | Poulsbo, WA | 4,801 | 28 | Clean |
| Moran State Park-Cascade Lake | Olga, WA | 4,783 | 19 | - |
| Forks Municipal Water Dept | Forks, WA | 4,744 | 15 | Clean |
| Warden City Of | Warden, WA | 4,674 | 219 | Clean |
| Raymond Water Department | Raymond, WA | 4,620 | 25 | Clean |
| Long Beach Water Department | Long Beach, WA | 4,592 | 892 | Clean |
| Belfair Water District 1 | Belfair, WA | 4,432 | 151 | - |
| South Bainbridge | Poulsbo, WA | 4,414 | 660 | - |
| Castle Rock Municipal Water | Castle Rock, WA | 4,367 | 126 | Clean |
| Orchard Avenue Irrigation Dist 6 | Spokane, WA | 4,330 | 24 | Clean |
| Goldendale City Of | Goldendale, WA | 4,314 | 52 | Clean |
| Pattison 500 | Lacey, WA | 4,302 | 67 | Clean |
| East Spokane Water Dist 1 | Spokane Valley, WA | 4,285 | 53 | Detected |
| Trentwood Irrigation District 3 | Spokane, WA | 4,228 | 45 | Detected |
| Suquamish | Poulsbo, WA | 4,203 | 9 | Clean |
| Paradise | Ashford, WA | 4,165 | 5 | - |
| Crystal Mountain Inc | Raymond, WA | 4,154 | 130 | Clean |
| Irvin Water District #6 | Spokane, WA | 4,150 | 11 | Detected |
| Coupeville Town Of | Coupeville, WA | 4,077 | 104 | Detected |
| White Salmon City Of | White Salmon, WA | 4,077 | 95 | Clean |
| Stevens Pass Water System | Leavenworth, WA | 4,053 | 35 | Clean |
| Granger Water Department | Granger, WA | 3,993 | 14 | Clean |
| Hatton Coulee Rest Area | Davenport, WA | 3,882 | 8 | - |
| King County Water District 119 | Duvall, WA | 3,796 | 3 | Clean |
| Everson City Of | Everson, WA | 3,788 | 45 | Clean |
| Spo Co Water Dist 3 Sys 3 | Spokane, WA | 3,765 | 271 | Clean |
| Grand Mound | Olympia, WA | 3,764 | 4 | - |
| Schrag Eb/Wb Rest Areas | Davenport, WA | 3,734 | 51 | - |
| Parkview Terrace | Tacoma, WA | 3,730 | 9 | Detected |
| Water District 19 | Vashon, WA | 3,723 | 572 | Clean |
| Eastsound Water Users Association | Eastsound, WA | 3,711 | 304 | Clean |
| Lake Cushman System 5 | Hoodsport, WA | 3,675 | 58 | Detected |
| Eatonville Water Dept | Eatonville, WA | 3,645 | 77 | Clean |
| Toutle River Rest Area Nb/Sb | Chehalis, WA | 3,590 | 27 | - |
| Friday Harbor Town Of | Friday Harbor, WA | 3,543 | 56 | Clean |
| Zillah City Of | Zillah, WA | 3,518 | 55 | - |
| Naches Town Of | Naches, WA | 3,512 | 517 | Clean |
| Colfax Water Department City Of | Colfax, WA | 3,507 | 46 | Clean |
| Winlock City Of | Winlock, WA | 3,502 | 237 | - |
| Roosevelt Water Association | Snohomish, WA | 3,493 | 17 | - |
| Millersylvania State Park | Olympia, WA | 3,456 | 4 | - |
| Horizons West | Tacoma, WA | 3,454 | 28 | Detected |
| Royal City Water | Royal City, WA | 3,389 | 61 | - |
| Tenino City of | Tenino, WA | 3,336 | 118 | Clean |
| Dayton Water Department | Dayton, WA | 3,283 | 20 | - |
| Newport City Of | Newport, WA | 3,258 | 213 | - |
| Oroville City Of | Oroville, WA | 3,256 | 92 | - |
| Fox Island Mutual Water Assoc | Fox Island, WA | 3,255 | 415 | - |
| Brewster City Of | Brewster, WA | 3,235 | 29 | - |
| Rock Island Water Dept City of | Rock Island, WA | 3,226 | 15 | - |