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 |
| Tyee Beach 2 Water Association | Mukilteo, WA | 98 | 1 | - |
| Camp Spalding | Newport, WA | 98 | 33 | - |
| Wilderwood HOA | Port Orchard, WA | 98 | 11 | - |
| Elk Heights 247 | Lacey, WA | 98 | 6 | - |
| Meadow Lane Water Assn | Othello, WA | 98 | 44 | - |
| Northwest | Port Orchard, WA | 98 | 17 | - |
| Camp Roganunda | Naches, WA | 98 | 15 | - |
| Sky Meadows Ranch Country Club Wtr | Cle Elum, WA | 98 | 68 | - |
| Westbridge Estates Water Assn | Port Orchard, WA | 98 | 38 | - |
| Wickersham Water Association | Acme, WA | 98 | 24 | - |
| Country Church of the Open Bible | Elk, WA | 98 | 6 | - |
| Preys Fruit Barn | Wenatchee, WA | 98 | 28 | - |
| Gambler Orchard Farmworker Housing | Wenatchee, WA | 98 | 1 | - |
| Jack Rabbit Water System | Tieton, WA | 98 | 1 | - |
| Randy Allred Employee Housing | Cle Elum, WA | 98 | 0 | - |
| Weber Farms Orchard Housing #2 | Moses Lake, WA | 98 | 6 | - |
| Gap Road Well #1 | Yakima, WA | 98 | 1 | - |
| River Ridge Farmworker Housing | Yakima, WA | 98 | 0 | - |
| Missimer H2A Housing | Yakima, WA | 98 | 0 | - |
| Longview Fibre Paper & Packaging | Leavenworth, WA | 97 | 11 | - |
| North Slope Estates Property | Pasco, WA | 97 | 20 | - |
| Grannys Cafe & Emerald Valley Inn | Port Angeles, WA | 97 | 24 | - |
| Zions Camp Lds Recreational Prop | Allyn, WA | 97 | 15 | - |
| North Offut Lake Wtr Service | Olympia, WA | 97 | 22 | - |
| Sun Island Maintenance Assn | Cle Elum, WA | 97 | 450 | - |
| Windust Park | Pasco, WA | 97 | 0 | - |
| Zirkle - Ellensburg Ranch | Yakima, WA | 97 | 2 | - |
| Duck Soup Inn | Friday Harbor, WA | 96 | 22 | - |
| Bay East | Union, WA | 96 | 12 | - |
| Dog Island Goods | Anacortes, WA | 96 | 5 | - |
| Nisbet Oyster Company | Raymond, WA | 96 | 20 | - |
| Dexter by the Sea | Raymond, WA | 96 | 41 | - |
| Bar B Estate Manor | Tacoma, WA | 96 | 17 | - |
| Lake Ki Sunrise Addition Water | Arlington, WA | 96 | 34 | - |
| Mason County Lost Lake | Port Orchard, WA | 96 | 68 | - |
| Rosedale Community Club | Tacoma, WA | 96 | 181 | - |
| Spring Glen Mobile Home Park | Mercer Island, WA | 96 | 7 | - |
| Summerset Meridian | Port Orchard, WA | 96 | 42 | - |
| Zirkle - Pasco Ranch 1 | Yakima, WA | 96 | 0 | - |
| Zirkle - Husky Ranch | Yakima, WA | 96 | 0 | - |
| Zirkle - Finley Ranch | Yakima, WA | 96 | 1 | - |
| Zirkle - Gap Road Ranch | Yakima, WA | 96 | 0 | - |
| Zirkle - Wahluke Ranch | Yakima, WA | 96 | 2 | - |
| Zirkle - Pasco Ranch #2 | Yakima, WA | 96 | 0 | - |
| Zirkle - Yanoff Ranch #2 | Yakima, WA | 96 | 0 | - |
| Quail Orchard Farmworker Housing | Cle Elum, WA | 96 | 2 | - |
| Hound Orchard Farmworker Housing | Cle Elum, WA | 96 | 0 | - |
| Highway 28 Orchard Farmworker | Cle Elum, WA | 96 | 0 | - |
| Matson - Selah Campus | Yakima, WA | 96 | 1 | - |
| Zirkle - Pasco Ranch #3 | Yakima, WA | 96 | 0 | - |