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 |
|---|---|---|---|---|
| Calvary Baptist Church | Ellensburg, WA | 243 | 4 | - |
| Shirona Water System | Coupeville, WA | 243 | 41 | - |
| YMCA Camp Reed | Deer Park, WA | 242 | 44 | - |
| King County Water District #123 | Port Orchard, WA | 242 | 87 | - |
| Kittitas Co WD #2 | Ronald, WA | 242 | 31 | - |
| Valleyhi Community Club | Cashmere, WA | 242 | 30 | - |
| Plymouth Day Use | Rufus, WA | 242 | 3 | - |
| Camp Colman | Port Orchard, WA | 241 | 5 | - |
| Columbus Park | Port Orchard, WA | 241 | 84 | - |
| Vistas Inc | Sequim, WA | 241 | 336 | - |
| Utsalady Heights Owners Assn | Mount Vernon, WA | 240 | 10 | - |
| Ridgeview Estates Water Association | Moses Lake, WA | 240 | 9 | - |
| Dixie Water Association | Walla Walla, WA | 240 | 45 | - |
| Greenwood Mobile Home Park | Westport, WA | 240 | 482 | - |
| Hide-Away Water Company Inc | Coupeville, WA | 240 | 19 | - |
| Rathbone Park Water Assoc | Ferndale, WA | 240 | 381 | - |
| Summerset West Water Association | Othello, WA | 240 | 38 | - |
| Timberline Mobile Home Park | Port Orchard, WA | 240 | 122 | - |
| Thousand Trails-La Conner | La Conner, WA | 239 | 6 | - |
| Cal Waterworks | Freeland, WA | 239 | 324 | - |
| Olalla | Tacoma, WA | 239 | 12 | - |
| Lewis & Clark Trail State Park | Dayton, WA | 239 | 8 | - |
| Majestic Mobile Manor | Port Orchard, WA | 238 | 26 | - |
| Skagit Co PUD - Marblemount | Mount Vernon, WA | 238 | 16 | - |
| Ocean City | Montesano, WA | 237 | 1,193 | - |
| River Rue Water System | Wilbur, WA | 237 | 31 | - |
| Hemmi Road Water Association | Everson, WA | 236 | 26 | - |
| Kopachuck | Tacoma, WA | 236 | 19 | - |
| Energy Dept Of/100K | Richland, WA, WA | 235 | 16 | - |
| Holiday Hideaway Water Co | Mount Vernon, WA | 235 | 37 | - |
| Fragaria Landing | Port Orchard, WA | 235 | 9 | - |
| Strawberry Hill | Poulsbo, WA | 235 | 19 | - |
| Lake Easton State Park East | Ellensburg, WA | 234 | 9 | - |
| Murdock Water | Dallesport, WA | 233 | 117 | - |
| Columbia Riverfront RV Park | Woodland, WA | 233 | 5 | - |
| Camp Orkila | Eastsound, WA | 233 | 8 | - |
| Island Lake Manor | Shelton, WA | 233 | 32 | - |
| Maury Mutual Water Co | Vashon, WA | 233 | 12 | - |
| Port Madison Water Company | Port Orchard, WA | 233 | 45 | - |
| English Camp | Friday Harbor, WA | 233 | 4 | - |
| Nelson Ridge | Tacoma, WA | 232 | 17 | - |
| East Olympia 684 | Lacey, WA | 230 | 23 | - |
| Carriage Club Estates | Port Orchard, WA | 230 | 72 | - |
| Meridian Terrace Mobile Home Park | Graham, WA | 229 | 13 | - |
| Belfern Water Association | Ferndale, WA | 228 | 60 | - |
| Brays Landing Water Users | Wenatchee, WA | 228 | 28 | - |
| Camelot and Western Skies | Tacoma, WA | 228 | 10 | - |
| Holden Village | Chelan, WA | 228 | 31 | - |
| Mountain View Business Park | Everson, WA | 228 | 36 | - |
| Bayview Estates Water Company | Oak Harbor, WA | 227 | 40 | - |