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 | — |