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EWG's Tap Water Database — 2019 UPDATE

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Utility name City People served
Alderwood Water District Lynnwood Population served: 171,500
Arlington Water Department Arlington Population served: 14,598
Battle Ground Water Department Battle Ground Population served: 16,710
Bonney Lake Water Department Bonney Lake Population served: 35,123
Camas Municipal Water Sewer System Camas Population served: 23,020
Cedar River Water & Sewer District Maple Valley Population served: 24,875
Centralia Utilities Centralia Population served: 15,751
Chelan County PUD 1 Wenatchee Population served: 13,170
City of Aberdeen Aberdeen Population served: 16,920
City of Anacortes Mount Vernon Population served: 15,734
City of Auburn Auburn Population served: 55,258
City of Bellevue Bellevue Population served: 142,900
City of Bellingham Water Division Bellingham Population served: 90,000
City of Bothell Water Bothell Population served: 15,268
City of Bremerton Bremerton Population served: 53,507
City of Edmonds Edmonds Population served: 32,381
City of Everett Public Works Department Everett Population served: 103,000
City of Grandview Grandview Population served: 10,922
City of Kelso Kelso Population served: 12,288
City of Kennewick Kennewick Population served: 77,347
City of Kirkland Kirkland Population served: 40,648
City of Lynnwood Lynnwood Population served: 34,224
City of Mercer Island Mercer Island Population served: 22,720
City of Moses Lake Moses Lake Population served: 22,930
City of Mountlake Terrace Mountlake Terrace Population served: 20,090
City of Oak Harbor Oak Harbor Population served: 18,716
City of Olympia Olympia Population served: 59,550
City of Port Angeles Port Angeles Population served: 19,038
City of Pullman Water Department Pullman Population served: 25,591
City of Puyallup Puyallup Population served: 34,030
City of Redmond Water System Redmond Population served: 60,650
City of Renton Renton Population served: 62,100
City of Richland Richland Population served: 51,150
City of Spokane Spokane Population served: 227,505
City of Sunnyside Sunnyside Population served: 15,858
City of Tacoma Tacoma Population served: 315,777
City of Tumwater Tumwater Population served: 21,538
City of Vancouver Vancouver Population served: 231,000
City of Washougal Washougal Population served: 14,750
City of Wenatchee Wenatchee Population served: 24,300
City of West Richland West Richland Population served: 13,080
City of Yakima Water Division Yakima Population served: 65,238
Clark Public Utilities Vancouver Population served: 82,071
Coal Creek Utility District Newcastle Population served: 11,833
Consolidated Irrig District 19 System 2 Greenacres Population served: 13,900
Covington Water District Kent Population served: 42,330
Cross Valley Water District Snohomish Population served: 17,280
East Wenatchee Water District East Wenatchee Population served: 26,495
Ellensburg Water Department Ellensburg Population served: 18,370
Enumclaw Water Department Enumclaw Population served: 15,283
Ferndale Ferndale Population served: 12,290
Firgrove Mutual Inc Puyallup Population served: 23,747
Fruitland Mutual Water Company Puyallup Population served: 11,169
Highline Water District Kent Population served: 68,258
Issaquah Water System Issaquah Population served: 22,926
JBLM Lewis Joint Base Lewis-mccord Population served: 29,115
Kent Water Department Kent Population served: 67,151
King County Water District #125 Seattle Population served: 14,760
King County Water District #20 Seattle Population served: 31,710
King County Water District #49 Burien Population served: 15,987
King County Water District 111 Kent Population served: 20,000
King County Water District No 90 Renton Population served: 19,000
Lacey Water Department Lacey Population served: 67,482
Lakehaven Utility District Federal Way Population served: 112,000
Lakewood Water District Lakewood Population served: 69,705
Longview Water Department Longview Population served: 40,878
Lynden Water Department Lynden Population served: 12,730
Marysville Utilities Marysville Population served: 62,115
Modern Electric Water Company Spokane Population served: 18,560
Monroe Water System Monroe Population served: 18,513
Mukilteo Water & Wastewater District Mukilteo Population served: 24,575
Nob Hill Water Association Yakima Population served: 28,827
North City Water District Shoreline Population served: 24,886
North Peninsula Poulsbo Population served: 12,437
North Perry Ave Water District Bremerton Population served: 18,533
Northshore Utility District Kenmore Population served: 70,146
Olympic View Water & Sewer District Edmonds Population served: 12,938
Parkland Light & Water Company Tacoma Population served: 25,050
Pasco Water Department Pasco Population served: 68,648
PUD #1 of Asotin County Clarkston Population served: 19,264
Sammamish Plateau Water and Sewer Sammamish Population served: 54,468
Seattle Public Utilities Seattle Population served: 678,000
Silver Lake Water & Sewer District Mill Creek Population served: 47,333
Silverdale Water District 16 Silverdale Population served: 20,665
Skagit County Public Utility District 1 Judy Reservoir Mt Vernon Population served: 65,118
SNO PUD 1 - Lake Stevens Everett Population served: 46,298
Snoqualmie Water Snoqualmie Population served: 11,700
Soos Creek Water and Sewer District Renton Population served: 62,898
Southwood Water System Tacoma Population served: 35,200
Spanaway Water Company Spanaway Population served: 25,153
Spokane County Water District 3, Sys 2 Spokane Population served: 11,555
Summit Water & Supply Company Tacoma Population served: 15,500
Vera Water & Power Veradale Population served: 24,692
Walla Walla Water Division Walla Walla Population served: 34,858
West Sound Utility District #1 Port Orchard Population served: 18,790
Whitworth Water District 2 Spokane Population served: 26,833
Woodinville Water District Woodinville Population served: 48,400