Public Water Systems
158 active public water systems in 10, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Quil Ceda Village | Tulalip, 10 | 30,000 | 123 | Clean |
| Spirit Mountain Casino | Grand Ronde, 10 | 7,800 | 25 | Clean |
| Tulalip Bay Water Dist #1 | Tulalip, 10 | 5,968 | 248 | Clean |
| Warm Springs Water Treatment Plant | Warm Springs, 10 | 3,800 | 383 | Clean |
| Lummi Tribal Water District | Bellingham, 10 | 3,699 | 271 | Clean |
| Legends Casino | Toppenish, 10 | 3,450 | 187 | - |
| Coeur D'alene Casino | Worley, 10 | 3,250 | 45 | - |
| Muckleshoot | Auburn, 10 | 3,250 | 104 | - |
| Nisqually-Leschi & West Nisqually | Olympia, 10 | 3,200 | 694 | - |
| Mt. Vista - Dungeness Golf Course | Sequim, 10 | 3,200 | 25 | Clean |
| Creekside Development | Canyonville, 10 | 3,159 | 75 | - |
| Fort Hall | Fort Hall, 10 | 2,850 | 505 | Clean |
| Snoqualmie Casino | Snoqualmie, 10 | 2,800 | 74 | - |
| Blyn - 7 Cedars Consolidated | Sequim, 10 | 2,630 | 198 | - |
| Skokomish Park Lower Loop | Shelton, 10 | 2,503 | 11 | - |
| Swinomish Casino & Lodge | La Conner, 10 | 2,400 | 6 | Clean |
| Angel of the Winds | Arlington, 10 | 2,303 | 308 | - |
| River Rock Tobacco and Fuel | Arlington, 10 | 2,117 | 12 | - |
| Mistequa Casino | Wellpinit, 10 | 2,070 | 674 | - |
| End of Trail II | Oakville, 10 | 2,000 | 12 | - |
| Suquamish Regional Public Water System | Suquamish, 10 | 1,874 | 324 | - |
| Taholah | Taholah, 10 | 1,600 | 507 | - |
| Metlakatla | Metlakatla, 10 | 1,575 | 368 | - |
| Lucky Eagle Casino | Oakville, 10 | 1,550 | 143 | - |
| Port Gamble Sklallam | Kingston, 10 | 1,509 | 105 | - |
| Squaxin Consolidated | Shelton, 10 | 1,500 | 239 | - |
| Port Susan Camp Club #1 | Stanwood, 10 | 1,500 | 196 | - |
| Colville Fuels Noisy Waters | Kettle Falls, 10 | 1,350 | 7 | - |
| Ctuir Pwd Mission | Pendleton, 10 | 1,310 | 644 | - |
| Makah Neah Bay | Neah Bay, 10 | 1,300 | 783 | - |
| Swinomish | La Conner, 10 | 1,212 | 11 | - |
| Skokomish | Skokomish Nation, 10 | 1,150 | 532 | - |
| Washington Beef LLC | Toppenish, 10 | 1,025 | 2 | - |
| Dungeness River Nature Center | Sequim, 10 | 1,000 | 4 | - |
| Port Susan Camp Club #2 | Stanwood, 10 | 1,000 | 141 | - |
| Port Susan Camp Club #3 | Stanwood, 10 | 1,000 | 211 | - |
| Tribal Complex | Toppenish, 10 | 907 | 221 | - |
| Bie Chemawa Indian School | Washington, 10 | 900 | 56 | - |
| White Swan | Toppenish, 10 | 900 | 647 | - |
| Quileute Water System | La Push, 10 | 885 | 349 | - |
| Adams View | Wapato, 10 | 790 | 429 | - |
| Heritage University Water System | Toppenish, 10 | 750 | 71 | - |
| Clearwater River Casino & Resort | Lewiston, 10 | 650 | 271 | - |
| Chehalis Tribal Housing | Oakville, 10 | 620 | 299 | - |
| Kla-MO-Ya Casino | Chiloquin, 10 | 580 | 127 | - |
| Blueberries | Wapato, 10 | 550 | 7 | - |
| Wellpinit | Wellpinit, 10 | 525 | 608 | - |
| Plummer Tribal Community | Plummer, 10 | 515 | 277 | - |
| Lower Elwha Valley | Port Angeles, 10 | 511 | 76 | - |
| Sage Hill Travel Center | Fort Hall, 10 | 510 | 26 | - |
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