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
Moses Lake City Of Moses Lake, WA 32,428 626 Detected
Fife Dept of Public Works Fife, WA 32,380 27 Clean
Spanaway Water Company Spanaway, WA 31,908 15 Detected
Camas Municipal Water Sewer System Camas, WA 31,794 714 Detected
North City Water District Shoreline, WA 31,744 4 Clean
Mercer Island City Of Mercer Island, WA 30,689 8 Clean
Battle Ground Water Dept City Of Battle Ground, WA 29,974 911 -
Pullman Water Department City Of Pullman, WA 29,690 15 Clean
Parkland Light & Water Company Tacoma, WA 29,595 76 Detected
Port Angeles City Of Port Angeles, WA 28,946 18 Clean
West Sound Utility District #1 Port Orchard, WA 28,928 148 Detected
Cedar River Water & Sewer District Maple Valley, WA 28,671 0 Detected
Centralia Public Works - Water Centralia, WA 28,164 10 Detected
Whitworth Water District 2 Mead, WA 26,883 434 Detected
Silverdale Water Dist 16 Silverdale, WA 26,634 99 Clean
East Wenatchee Water District East Wenatchee, WA 26,519 46 Clean
Mountlake Terrace City Of Mountlake Terrace, WA 26,402 12 Clean
Mukilteo Water & Wastewater Distr Mukilteo, WA 25,182 4 Clean
Gorge Amphitheatre Cle Elum, WA 25,015 29 -
Vera Water & Power Spokane Valley, WA 24,692 66 Clean
North Perry Ave Water District Bremerton, WA 24,402 47 Clean
Lake Meridian Water District Kent, WA 24,231 9 Clean
Oak Harbor City Of Oak Harbor, WA 23,767 13 Clean
Monroe Water System Monroe, WA 23,467 27 Clean
Enumclaw Water Department Enumclaw, WA 23,276 39 Clean
Cross Valley Water District Snohomish, WA 23,054 33 Detected
PUD #1 of Asotin County Clarkston, WA 21,930 133 Clean
Washington State University Pullman, WA 21,506 27 Clean
Washougal City Of Washougal, WA 21,441 335 Detected
Consolidated Irrig Dist 19 System 2 Greenacres, WA 21,220 44 Clean
Anacortes City Of Mount Vernon, WA 21,105 134 Clean
Ridgefield Public Works Ridgefield, WA 20,967 1,376 Clean
Ellensburg Water Dept Ellensburg, WA 20,900 13 Clean
Arlington City Of Arlington, WA 20,418 1 Detected
King County Water District No 90 Renton, WA 20,100 262 Clean
Ferndale Ferndale, WA 19,305 20 Clean
Spo Co Water Dist 3 Sys 1 Spokane, WA 18,983 124 Clean
Modern Electric Water Co Spokane, WA 18,487 262 Clean
West Richland City Of West Richland, WA 18,280 63 Clean
Lynden Water Department Lynden, WA 17,969 33 Clean
Aberdeen City Of Aberdeen, WA 17,958 14 Clean
Shelton City Of Shelton, WA 17,575 108 Clean
King County Water District #125 Seattle, WA 17,546 7 Clean
Poulsbo City Of Poulsbo, WA 17,180 418 Clean
Eastern Washington University Cheney, WA 17,108 39 Clean
Sunnyside City Of Sunnyside, WA 17,037 45 Clean
Port Townsend City Of Port Townsend, WA 16,977 18 Clean
Naval Base Kitsap at Bangor Silverdale, WA 16,828 21 Clean
Yelm City Of Yelm, WA 16,633 9 Clean
Naval Air Station/Whidbey Island NAS Whidbey Island, WA 16,595 10 Clean
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