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 |
|---|---|---|---|---|
| Ravensdale Water Supply | Renton, WA | 389 | 61 | - |
| Beaver Bay Campground | Woodland, WA | 387 | 2 | - |
| Tatoosh Water Company | Mount Vernon, WA | 387 | 34 | - |
| White Bluff Water Association | Kennewick, WA | 386 | 49 | - |
| Wilson Creek Water Dept Town Of | Quincy, WA | 386 | 35 | - |
| Eldorado Hills | Poulsbo, WA | 383 | 4 | - |
| Ponderosa Park Water System | Goldendale, WA | 381 | 11 | - |
| Delphi | Shelton, WA | 381 | 27 | - |
| Chelan Falls Water District | Wenatchee, WA | 380 | 36 | - |
| Mansfield Water System | Waterville, WA | 380 | 178 | - |
| Upper Columbia Academy | Spangle, WA | 380 | 54 | - |
| Cascade Valley Water District | Moses Lake, WA | 379 | 477 | - |
| Parkwood MFD Housing Community | Sequim, WA | 378 | 20 | - |
| Timberline Village 628 | Lacey, WA | 378 | 10 | - |
| Sun Mountain Resort | Twisp, WA | 376 | 387 | - |
| West Prairie Village | Spokane, WA | 375 | 305 | - |
| Spo Co Water Dist 3 Sys 8 | Spokane, WA | 375 | 2 | - |
| Zirkle - Paterson Ranch | Yakima, WA | 374 | 0 | - |
| Almira Water System | Almira, WA | 372 | 21 | - |
| Marcus Whitman School | Yakima, WA | 370 | 13 | - |
| Whatcom Meadows | Sedro Woolley, WA | 370 | 15 | - |
| Elmer City Water System | Elmer City, WA | 368 | 16 | - |
| Hood Canal | Shelton, WA | 368 | 50 | - |
| Tahuya River Valley Water District | Shelton, WA | 367 | 281 | - |
| Uniontown Water Works | Uniontown, WA | 366 | 74 | - |
| JR Simplot Co | Moses Lake, WA | 365 | 59 | - |
| Custer Water Association | Custer, WA | 365 | 77 | - |
| Stevens Co PUD - Riverside | Loon Lake, WA | 365 | 25 | - |
| Alpine Hills | Tacoma, WA | 363 | 11 | - |
| Edgewater Rocky Pond | Wenatchee, WA | 363 | 0 | - |
| Easton Water District | Cle Elum, WA | 362 | 69 | - |
| Weyerhaeuser Elementary School | Port Orchard, WA | 362 | 12 | - |
| Hiapark | Port Orchard, WA | 360 | 10 | - |
| Hillcrest Food Mart | Napavine, WA | 360 | 18 | - |
| Lake Lucinda Community Club | Shelton, WA | 360 | 983 | - |
| Golden Plains MHP #1 | Moses Lake, WA | 360 | 212 | - |
| Gardiner Lud 1 | Port Townsend, WA | 358 | 18 | - |
| Mains Farm Property Owners | Sequim, WA | 358 | 11 | - |
| Spo Co Water Dist 3 Sys 6 | Spokane, WA | 358 | 476 | - |
| Lisecc | Lummi Island, WA | 357 | 40 | - |
| WSDP Riverside SP Equestrian | Nine Mile Falls, WA | 356 | 2 | - |
| Canterbrook Village Apartments | Port Orchard, WA | 355 | 36 | - |
| Sierra Water System | Puyallup, WA | 355 | 7 | - |
| Vista del Rio Mobile Home Park | Vancouver, WA | 352 | 3,450 | - |
| Chiwawa Communities Assn | Leavenworth, WA | 352 | 29 | - |
| Strathview Water District 16 | Medical Lake, WA | 351 | 16 | - |
| Bell Bay Jackson Water Association | Lynden, WA | 350 | 26 | - |
| Chewelah Water Dept North | Chewelah, WA | 350 | 26 | - |
| Honeywell Electronic Mfg LLC | Republic, WA | 350 | 12 | - |
| Quilcene School District 48 | Brinnon, WA | 350 | 80 | - |