Washington utilities 1,201 to 1,300.
Each serves 107 to 125 people, as it reports to EPA. Your ZIP code finds yours faster.
1,201 to 1,300 of 2,220, by people served
| Utility | Based in | Serves | Regulated PFAS | Health-based violations since 2016 |
|---|---|---|---|---|
| Isle Aire Beach Association | Maple Falls | 125 | Not sampled | 4 |
| Lake Terrill Water Assoc | Lynden | 125 | Not sampled | 0 |
| Rainier Terrace | Port Orchard | 125 | Not sampled | 0 |
| Spanaway Village Water System | Lacey | 125 | Not sampled | 0 |
| Tolmie Cove | Port Orchard | 125 | Not sampled | 0 |
| Waterloo Acres Community Water Sys | Oak Harbor | 125 | Not sampled | 0 |
| Whispering Woods Home Park | Napavine | 125 | Not sampled | 0 |
| Kiona Village Court | Prosser | 124 | Not sampled | 0 |
| Campo Hacienda | Oak Harbor | 123 | Not sampled | 2 |
| Crestview Mobile Manor | Puyallup | 123 | Not sampled | 0 |
| Crystal Creek | Silverdale | 123 | Not sampled | 0 |
| Discovery Bay Leaseholders | Sequim | 123 | Not sampled | 0 |
| Regency Park | Tacoma | 123 | Not sampled | 0 |
| Snee - Oosh Land Co | MT Vernon | 123 | Not sampled | 0 |
| Surfrest Park Water Company | Poulsbo | 123 | Not sampled | 0 |
| Camano Sunrise Water Assn #2 | MT Vernon | 122 | Not sampled | 0 |
| Greenwater Meadows Landowners Assn | Sultan | 122 | Not sampled | 0 |
| Lakeland Manor | Tumwater | 122 | Not sampled | 0 |
| Rangeview | Pasco | 122 | Not sampled | 2 |
| Scenic Beach Water Company | Camano Island | 122 | Not sampled | 0 |
| Stahl Hutterian Brethren | Ritzville | 122 | Not sampled | 0 |
| Snowblaze | Mead | 121 | Not sampled | 0 |
| Wilgus Housing Water System | Grandview | 121 | Not sampled | 1 |
| Aldergrove Water Assoc. | Lynden | 120 | Not sampled | 0 |
| Beverly Water District | Mattawa | 120 | Not sampled | 2 |
| Cherrywood Mobile Home Manor | Seattle | 120 | Not sampled | 0 |
| Enchanted Firs Mobile Estates | Allyn | 120 | Not sampled | 0 |
| Forest Park Water System | Gig Harbor | 120 | Not sampled | 0 |
| Indian Ridge Water Company | Arlington | 120 | Not sampled | 0 |
| Lakeridge Water Co | Port Orchard | 120 | Not sampled | 0 |
| Livingston Bay Community Assn | Stanwood | 120 | Not sampled | 0 |
| Mantheys Country Mobile Park | Lynden | 120 | Not sampled | 0 |
| Maple Manor Mobile Home Park | Tumwater | 120 | Not sampled | 0 |
| O - Zi - Ya Community Club | MT Vernon | 120 | Not sampled | 0 |
| Rainbow Court | Prosser | 120 | Not sampled | 0 |
| Richview | Washtucna | 120 | Not sampled | 0 |
| Riverside Villa | Port Orchard | 120 | Not sampled | 0 |
| Scootenay Water Assn Inc | Connell | 120 | Not sampled | 0 |
| Stevens Co PUD - Mission Ridge | Loon Lake | 120 | Not sampled | 0 |
| Timberlane Mobile Estates | Napavine | 120 | Not sampled | 0 |
| Town of Waverly | Waverly | 120 | Not sampled | 0 |
| Cascade Highlands North | Tacoma | 119 | Not sampled | 0 |
| Cedarwood South Union Estates | Tacoma | 119 | Not sampled | 0 |
| Foss Road | Tacoma | 119 | Not sampled | 0 |
| Quilcene | Port Townsend | 119 | Not sampled | 0 |
| Yak Co - Gala Estates Water System | Yakima | 119 | Not sampled | 0 |
| Hillview Mobile Community LLC | Port Orchard | 118 | Not sampled | 0 |
| Three Fingers | Port Orchard | 118 | Not sampled | 1 |
| Twanoh Heights Community Club | Union | 118 | Not sampled | 0 |
| Viewside Community | Poulsbo | 118 | Not sampled | 0 |
| Orting 15 | Port Orchard | 117 | Not sampled | 0 |
| Trails End | Port Orchard | 117 | Not sampled | 0 |
| Cedar Lynn Water Assoc | Lynden | 116 | Not sampled | 0 |
| Minter Beach Estates | Gig Harbor | 116 | Not sampled | 0 |
| Whispering Pines Homeowners Coop | Coupeville | 116 | Not sampled | 0 |
| Lake Samish Terrace LLC | Lynden | 115 | Not sampled | 0 |
| Driftwood Acres Maintenance Corp | Cle Elum | 114 | Not sampled | 0 |
| Moxie Community LLC | Port Orchard | 114 | Not sampled | 0 |
| North Lopez Service | Lopez Island | 114 | Not sampled | 0 |
| Aqua Hills Marysville | Port Orchard | 113 | Not sampled | 0 |
| Country Club Estates 521 | Lacey | 113 | Not sampled | 16 |
| River Haven | Satsop | 113 | Not sampled | 0 |
| Three Ponds Mobile Park & Apts. | Puyallup | 113 | Not sampled | 0 |
| Valley View Estates Water Assn | MT Vernon | 113 | Not sampled | 0 |
| Elgerwood Maintenance Association | Coupeville | 112 | Not sampled | 0 |
| Bush Point Trac Park | Coupeville | 111 | Not sampled | 0 |
| Cherry Park | Union | 111 | Not sampled | 0 |
| Crumbacher Estates Water System | Tonasket | 111 | Not sampled | 0 |
| Holly | Port Orchard | 111 | Not sampled | 0 |
| Idlewood Community | Coupeville | 111 | Not sampled | 0 |
| Longbranch Shores Water Association | Port Orchard | 111 | Not sampled | 0 |
| Loon Lake Acres | Loon Lake | 111 | Not sampled | 0 |
| Madrona Point | Tacoma | 111 | Not sampled | 0 |
| Royalwood | Tacoma | 111 | Not sampled | 0 |
| Arcadia Estates | Union | 110 | Not sampled | 0 |
| Central Mobile Home Park | Ellensburg | 110 | Not sampled | 0 |
| Century Water Association | Lynden | 110 | Not sampled | 0 |
| Diamond Point Water System | Cle Elum | 110 | Not sampled | 0 |
| Green Mountain Acres | Poulsbo | 110 | Not sampled | 1 |
| Highland Estates | Union | 110 | Not sampled | 0 |
| Holmes Harbor Water Co | Coupeville | 110 | Not sampled | 0 |
| Roza Heights Water Assn | Prosser | 110 | Not sampled | 0 |
| Skyview | Port Orchard | 110 | Not sampled | 0 |
| Twin View Estates Community Assoc | Greenbank | 110 | Not sampled | 0 |
| Burnett Water District | Buckley | 109 | Not sampled | 0 |
| Edgehill Water Assn | Bonney Lake | 109 | Not sampled | 0 |
| Homestead Acres | Tacoma | 109 | Not sampled | 0 |
| Martin Creek Community Assn | Tonasket | 109 | Not sampled | 11 |
| Potlatch Beach Mutual | Hoodsport | 109 | Not sampled | 0 |
| Ranch Acre | Tacoma | 109 | Not sampled | 0 |
| Riverwood Park Community Club | Port Orchard | 109 | Not sampled | 0 |
| Skyline West Community Club | Coupeville | 109 | Not sampled | 0 |
| Butterfield Water Company | Yakima | 108 | Not sampled | 0 |
| Lake - O - the - Woods | Freeland | 108 | Not sampled | 0 |
| Ryanwood Improvement Assn | Port Orchard | 108 | Not sampled | 0 |
| Waynes Ridge Water Assoc | Coupeville | 108 | Not sampled | 0 |
| Woodland Heights | Snohomish | 108 | Not sampled | 0 |
| Cascade River Community Club | Marblemount | 107 | Not sampled | 0 |
| Conagra Foods Lamb Weston Inc - Farm | Pasco | 107 | Not sampled | 0 |
| Pilchuck Riviera #2 | Snohomish | 107 | 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.
Where to go next
- Read your utility’s own reportIt covers contaminants these pages don’t show, and its own latest results.How to read it
- Every contaminantLegal limits, health goals and what handles each one.All contaminants
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