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 |
|---|---|---|---|---|
| Scott Lake | Port Orchard, WA | 1,604 | 8 | - |
| River Bend HOA | Snoqualmie, WA | 1,603 | 16 | - |
| Okanogan Neighbors | Tonasket, WA | 1,600 | 5 | - |
| La Conner Water Dept | Laconner, WA | 1,585 | 8 | - |
| Consolidated Irrigation Dist 14 | Walla Walla, WA | 1,555 | 27 | - |
| Mossyrock Public Utility City Of | Mossyrock, WA | 1,553 | 52 | - |
| Pole Road Water Association | Lynden, WA | 1,545 | 116 | - |
| Naval Base Kitsap at Keyport | Silverdale, WA | 1,540 | 23 | - |
| Lake Minterwood | Tacoma, WA | 1,539 | 17 | - |
| Mt Baker Ski Area - White Salmon | Bellingham, WA | 1,501 | 2 | - |
| Tapps Island Water System | Lake Tapps, WA | 1,500 | 33 | - |
| Blanchard Edison Water Assn. Inc. | Bow, WA | 1,480 | 24 | - |
| Sunland Estates Homeowners Assn | Quincy, WA | 1,480 | 84 | - |
| Tieton Water Dept City Of | Yakima, WA | 1,475 | 66 | - |
| Graham Hill Mutual Water Co Inc | Graham, WA | 1,474 | 21 | - |
| View Royal Water System | Puyallup, WA | 1,461 | 23 | - |
| Hogans Corner | Montesano, WA | 1,458 | 58 | - |
| Potholes State Park | Coulee City, WA | 1,456 | 13 | - |
| Fort Ebey State Park | Coupeville, WA | 1,443 | 21 | - |
| Point Roberts Water District No 4 | Point Roberts, WA | 1,440 | 26 | - |
| Fort Spokane Campground | Coulee dam, WA | 1,436 | 7 | - |
| Grand Coulee Water Dept City Of | Grand Coulee, WA | 1,428 | 11 | - |
| High Valley Country Club | Packwood, WA | 1,425 | 87 | - |
| Reardan Town Of | Waverly, WA | 1,418 | 42 | - |
| Langley City Of | Langley, WA | 1,416 | 8 | - |
| Whatcom County Water Dist #7 | Bellingham, WA | 1,410 | 3 | - |
| CHELAN CO PUD1 - Peshastin | WA | 1,397 | 74 | - |
| Pomeroy City Of | Pomeroy, WA | 1,395 | 101 | - |
| Lake Josephine Riviera | Anderson Island, WA | 1,380 | 69 | - |
| Beacon Rock State Park 1 | Stevenson, WA | 1,375 | 14 | - |
| Harbor Hills Community Water System | Freeland, WA | 1,373 | 782 | - |
| Sno PUD 1 - May Creek | Everett, WA | 1,364 | 4 | - |
| Coulee Dam Water Dept | Coulee Dam, WA | 1,359 | 7 | - |
| Pelican Point By Cascadia LLC | Yakima, WA | 1,357 | 140 | - |
| Whatcom County Water Dist #2 | Bellingham, WA | 1,353 | 3 | - |
| Winthrop Town Of | Winthrop, WA | 1,350 | 27 | - |
| Nooksack Valley Water Association | Lynden, WA | 1,343 | 16 | - |
| Chelan County Fairground | Cashmere, WA | 1,335 | 11 | - |
| Evergreen Shores | Tacoma, WA | 1,329 | 11 | - |
| Bi Zi Farms | Vancouver, WA | 1,328 | 4 | - |
| Oakville City Of | Oakville, WA | 1,325 | 149 | - |
| Shorecrest Estates Water Co | Shelton, WA | 1,321 | 71 | - |
| Riverside SD Central Site Schools | Chattaroy, WA | 1,320 | 225 | - |
| Harrah Water System | Harrah, WA | 1,304 | 27 | - |
| Grays Harbor Co Water Dist 1 | Raymond, WA | 1,302 | 294 | - |
| Mount Spokane Ski #2 | Mead, WA | 1,301 | 9 | - |
| North Mason High School | Port Orchard, WA | 1,300 | 368 | - |
| Diamond Lake Water & Sewer District | Newport, WA | 1,299 | 83 | - |
| Palouse Water Dept City Of | Palouse, WA | 1,298 | 45 | - |
| Battle Ground State Park | Stevenson, WA | 1,290 | 22 | - |