Washington utilities 301 to 400.

Each serves 1,174 to 2,212 people, as it reports to EPA. Your ZIP code finds yours faster.

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301 to 400 of 2,220, by people served

Washington utilities, 301 to 400 of 2,220, by people served
Utility	Based in	Serves	Regulated PFAS	Health-based violations since 2016
Shelter Bay Community Inc	La Conner	2,212	None found	0
Hutchinson Irrigation Dist #16	Spokane Valley	2,209	Not sampled	0
Three Lakes Water Association	Snohomish	2,198	Not sampled	0
Sumas Water Dept	Sumas	2,157	Not sampled	0
Alderbrook Water Co	Union	2,154	Not sampled	0
City of Mabton	Mabton	2,150	Not sampled	0
Lake Limerick Water	Shelton	2,148	Not sampled	0
City of Morton	Morton	2,147	Not sampled	0
Lakeland Village Water	Allyn	2,120	Not sampled	0
Sunnyslope	Shelton	2,112	Not sampled	0
City of Roslyn	Roslyn	2,099	Not sampled	0
Sandy Point Improvement Co	Lynden	2,098	Not sampled	0
Roche Harbor Water System Inc	Friday Harbor	2,091	Not sampled	0
Mirrormont	Tacoma	2,083	Not sampled	0
Naselle	Raymond	2,073	Not sampled	0
View Royal Water System	Puyallup	2,069	Not sampled	0
Heights Water	Vashon	2,051	None found	0
Nisqually Pines Community Club	Port Orchard	2,037	Not sampled	0
Deer Creek Water Assoc.	Lynden	2,000	Not sampled	0
Lewis Co Water Dist #2	Onalaska	1,983	Not sampled	0
Clinton Water District	Clinton	1,980	Not sampled	0
Skagit Co Water District #1	MT Vernon	1,974	Not sampled	0
Pole Road Water Association	Lynden	1,960	Not sampled	0
Toledo Municipal	Toledo	1,944	Not sampled	0
City of Millwood	Spokane	1,925	Not sampled	1
Palmer Lake	Tacoma	1,924	Not sampled	0
Summit View Water System	Kennewick	1,869	Not sampled	0
Wilderness Rim Association	Falls City	1,867	Not sampled	0
Hoodsport	Shelton	1,853	Not sampled	0
Rocky Point Water District 12	Bremerton	1,831	Not sampled	0
La Conner Water Dept	Laconner	1,821	Not sampled	0
City of Waitsburg	Waitsburg	1,817	Not sampled	0
City of Electric City	Electric City	1,812	Not sampled	0
Cosmopolis Water Department	Raymond	1,812	Not sampled	0
Canterwood Water System	Gig Harbor	1,805	Not sampled	0
Moab Irrigation Dist #20	Newman Lake	1,790	Not sampled	0
Glenhaven Lakes Club	Sedro Woolley	1,780	Not sampled	0
Rochester	Rochester	1,762	Not sampled	0
Bingen Water Dept	Bingen	1,758	Not sampled	0
Davenport Water Division	Davenport	1,750	Not sampled	0
Basin City Water Sewer District	Mesa	1,740	Not sampled	3
City of Entiat	Entiat	1,730	Not sampled	0
Ritzville Water Department	Ritzville	1,725	Not sampled	0
Clallam Bay Sekiu	Carlsborg	1,719	Not sampled	0
Indianola Water	Poulsbo	1,705	Not sampled	0
Evergreen Clallam County PUD 1	Carlsborg	1,694	Not sampled	0
City of Republic	Republic	1,673	Not sampled	0
Cathlamet Water Dept	Cathlamet	1,636	Not sampled	0
Scott Lake	Port Orchard	1,604	Not sampled	0
River Bend HOA	Snoqualmie	1,603	Not sampled	0
Carnhope Irrigation District 7	Spokane Valley	1,602	Not sampled	0
Consolidated Irrigation Dist 14	Walla Walla	1,555	Not sampled	0
City of Mossyrock Public Utility	Mossyrock	1,553	Not sampled	0
Naval Base Kitsap at Keyport	Silverdale	1,540	Not sampled	0
Lake Minterwood	Tacoma	1,539	Not sampled	0
Tapps Island Water System	Lake Tapps	1,501	Not sampled	0
Blanchard Edison Water Assn. Inc.	Bow	1,480	Not sampled	0
Sunland Estates Homeowners Assn	Quincy	1,480	Not sampled	0
City of Tieton Water Dept	Yakima	1,475	Not sampled	0
Hogans Corner	Montesano	1,458	Not sampled	0
Coulee Dam Water Dept	Coulee Dam	1,454	Not sampled	0
Graham Hill Mutual Water Co Inc	Graham	1,440	Not sampled	0
Point Roberts Water District No 4	Point Roberts	1,440	Not sampled	0
City of Grand Coulee Water Dept	Grand Coulee	1,428	Not sampled	0
Rosario	Eastsound	1,426	Not sampled	0
High Valley Country Club	Packwood	1,425	Not sampled	0
Town of Reardan	Waverly	1,418	Not sampled	0
City of Langley	Langley	1,416	Not sampled	1
Whatcom County Water Dist #7	Bellingham	1,410	Not sampled	0
Chelan Co Pud1 - Peshastin		1,397	Not sampled	1
City of Pomeroy	Pomeroy	1,395	Not sampled	0
Lake Josephine Riviera	Anderson Island	1,380	Not sampled	0
Sno PUD 1 - May Creek	Everett	1,374	Not sampled	0
Harbor Hills Community Water System	Freeland	1,373	Not sampled	0
Pelican Point by Cascadia LLC	Yakima	1,357	Not sampled	1
Whatcom County Water Dist #2	Lynden	1,353	Not sampled	0
Town of Winthrop	Winthrop	1,350	Not sampled	0
Carlsborg Lud 10 12 13 14	Carlsborg	1,349	Not sampled	0
Evergreen Shores	Tacoma	1,329	Not sampled	0
City of Oakville	Oakville	1,325	Not sampled	0
Shorecrest Estates Water Co	Shelton	1,321	Not sampled	0
Harrah Water System	Harrah	1,304	Not sampled	0
Grays Harbor Co Water Dist 1	Raymond	1,302	Not sampled	0
Diamond Lake Water & Sewer District	Newport	1,299	Not sampled	0
City of Palouse Water Dept	Palouse	1,298	Not sampled	0
Carlyon Beach Homeowners	Olympia	1,273	Not sampled	0
Walla Walla University	Walla Walla	1,273	Not sampled	0
Freeland Water and Sewer District	Freeland	1,264	Not sampled	0
Bc Water Co	Kennewick	1,262	Not sampled	5
Lakeview Park Water Assn	Quincy	1,259	Not sampled	0
Concrete Utilities	MT Vernon	1,234	Not sampled	1
Stevens Co PUD - Waitts Lake	Loon Lake	1,216	Not sampled	0
City of Roy	Roy	1,214	Not sampled	0
Washington State Corrections - Women	Gig Harbor	1,205	Not sampled	0
Keyport Water	Poulsbo	1,202	Not sampled	0
Community Sewer and Water District	Kennewick	1,200	Not sampled	0
Whitworth University	Spokane	1,200	Not sampled	0
Fisherman Bay Water Association	Lopez Island	1,195	Not sampled	0
Warm Beach Conference Grounds	MT Vernon	1,190	Not sampled	0
Lewis Co Water Dist #1	Napavine	1,174	Not sampled	0

Every utility EPA sampled for PFAS under UCMR 5, any other community system serving 3,300 people or more, and any smaller one with results from 2020 on, from the state. Other systems appear in ZIP code results. People served is what each utility reports to EPA. Data: EPA SDWIS 2026 Q3, UCMR 5 and EPA’s 2012 to 2019 compliance results, and Washington State Department of Health, Office of Drinking Water.

301 to 400 of 2,220, by people served

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