PlainWater

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.

Population Violations Health Violations Name
System Name Location Population Violations PFAS
North Peninsula Poulsbo, WA 16,449 31 Clean
Olympic View Water & Sewer District Edmonds, WA 16,403 14 Clean
Summit Water & Supply Co Tacoma, WA 16,109 23 Detected
King County Water District #49 Burien, WA 16,065 9 Clean
Coal Creek Utility District Newcastle, WA 15,989 12 Clean
Snoqualmie Water Snoqualime, WA 15,848 39 Clean
Chelan Co PUD 1 Wenatchee, WA 15,840 20 Clean
Port Orchard Water Dept Port Orchard, WA 15,810 119 Clean
Sumner City Of Sumner, WA 15,530 107 Clean
Fruitland Mutual Water Company Puyallup, WA 15,313 137 Detected
Kelso City Of Kelso, WA 15,097 13 Clean
Gig Harbor Water Dept Gig Harbor, WA 14,902 36 Clean
Cheney City Of Cheney, WA 14,621 17 Clean
Quimper Port Townsend, WA 14,500 676 Detected
Sequim City Of Sequim, WA 14,293 12 Detected
Liberty Lake Sewer & Water District Liberty Lake, WA 14,212 27 Detected
Stanwood Water Dept City Of Stanwood, WA 13,785 179 Clean
Dupont Water System City Of DuPont, WA 13,141 5 Clean
JBLM McChord Field Joint Base Lewis-McChord, WA 13,115 343 Detected
Selah City Of Selah, WA 12,515 243 Clean
Bainbridge Island City Of Bainbridge Island, WA 12,486 9 Clean
Naval Base Kitsap at Bremerton Silverdale, WA 12,078 22 Clean
Skyway Water & Sewer Seattle, WA 12,036 4 Clean
Beacon Hill Water & Sewer District Kelso, WA 11,969 2 Clean
Hoquiam Water Department Hoquiam, WA 11,456 10 Clean
Chehalis Water Department Chehalis, WA 11,426 42 Clean
Snohomish City Of Snohomish, WA 11,258 111 Clean
Grandview City Of Grandview, WA 11,010 346 Clean
Woodland City Of Woodland, WA 10,640 518 Detected
Manchester Water District Manchester, WA 10,437 54 Clean
Orting City Of Orting, WA 10,332 57 Clean
Duvall City Of Duvall, WA 10,267 6 Clean
Lwwsd - South Shore Water System Bellingham, WA 10,028 107 Clean
Port Angeles Composite Carlsborg, WA 9,879 39 Detected
Cougar Rock Campground Ashford, WA 9,722 12 -
Mountain View-Edgewood Water Co Edgewood, WA 9,680 7 Detected
Airway Heights City Of Airway, WA 9,489 194 Detected
Consolidated Irrig Dist 19 System 1 Greenacres, WA 9,434 22 Clean
Chelan Water Dept City Of Chelan, WA 9,425 105 Clean
Ocean Shores Water Dept Hoquiam, WA 9,347 152 Clean
Leavenworth City Of Leavenworth, WA 9,218 68 -
Birch Bay Water & Sewer District Birch Bay, WA 9,019 64 Clean
Toppenish Water Department Toppenish, WA 8,950 8 Clean
Othello Water Department Othello, WA 8,755 159 Clean
Union Hill Water Association Inc Redmond, WA 8,720 312 Clean
Ephrata Water Department Ephrata, WA 8,620 267 Clean
Steilacoom Town Of Steilacoom, WA 8,545 2 Clean
NE Sammamish Sewer & Water District Sammamish, WA 8,516 19 Clean
Quincy Water Department City Of Quincy, WA 8,415 281 Clean
Yak Co - Terrace Heights Yakima, WA 8,410 174 Clean
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