Washington utilities 1,001 to 1,100.
Each serves 150 to 180 people, as it reports to EPA. Your ZIP code finds yours faster.
1,001 to 1,100 of 2,220, by people served
| Utility | Based in | Serves | Regulated PFAS | Health-based violations since 2016 |
|---|---|---|---|---|
| MT Adams Orchard Division - Camp B | White Salmon | 180 | Not sampled | 0 |
| Willeys Lake Terrace Water Assn | Lynden | 180 | Not sampled | 2 |
| Lakeside LLC | Kirkland | 178 | Not sampled | 0 |
| Bear Mountain Water District | Chelan | 177 | Not sampled | 0 |
| Burbank Heights | Burbank | 177 | Not sampled | 0 |
| Onamac Water System | Camano Island | 177 | Not sampled | 0 |
| Peshastin Domestic Water Assn | Cashmere | 177 | Not sampled | 0 |
| Tall Firs Mobile Home Park | Port Orchard | 177 | Not sampled | 0 |
| Triton Head Assn | Port Orchard | 176 | Not sampled | 0 |
| Willow Tree Park | Yakima | 176 | Not sampled | 0 |
| Country Club 679 | Lacey | 175 | Not sampled | 0 |
| Driftwood Cove | Poulsbo | 175 | Not sampled | 0 |
| Fieldstone Memory Care Bainbridge | Lake Tapps | 175 | Not sampled | 0 |
| Meadow Ridge | Coupeville | 175 | Not sampled | 0 |
| Olympic View Community LLC | Port Orchard | 175 | Not sampled | 0 |
| Rockaway Beach Water | Bainbridge Island | 175 | Not sampled | 0 |
| Skagit Co PUD Rockport | Mount Vernon | 175 | Not sampled | 0 |
| Southgate Water Company | Pasco | 175 | Not sampled | 0 |
| Taylor Bay Beach Club Inc | Elma | 175 | Not sampled | 1 |
| Twin Firs Mobile Estates | Port Orchard | 175 | Not sampled | 0 |
| Wye Lake Acreages | Port Orchard | 175 | Not sampled | 0 |
| Flying Carpet Mobile Estates | Napavine | 174 | Not sampled | 0 |
| Lebam | Raymond | 174 | Not sampled | 0 |
| Locloman Subdivision | Kent | 174 | Not sampled | 0 |
| Sunset Water Association | Bellingham | 174 | Not sampled | 0 |
| Mutiny View Manor Community Club | Freeland | 173 | Not sampled | 0 |
| Loma Vista 369 | Lacey | 172 | Not sampled | 0 |
| Alderdale Water Assn | Prosser | 171 | Not sampled | 0 |
| Meadow Lake Water Association | Arlington | 171 | Not sampled | 0 |
| Warden Hutterian Brethren 1 | Warden | 171 | Not sampled | 0 |
| Coach Country Corral | Port Orchard | 170 | Not sampled | 0 |
| Crystal Lake Inc | Woodinville | 170 | Not sampled | 0 |
| Edwall Water Assn | Edwall | 170 | Not sampled | 0 |
| Hintzville Acres | Tacoma | 170 | Not sampled | 0 |
| Lakehurst H2o | Medical Lake | 170 | Not sampled | 0 |
| Lakewood Heights | Shelton | 170 | Not sampled | 1 |
| Sea View | Montesano | 170 | Not sampled | 1 |
| Johnson Point HOA | Port Orchard | 169 | Not sampled | 0 |
| Arrowhead Beach Coop Water Assoc | MT Vernon | 168 | Not sampled | 19 |
| Dawnbreaker Water Association | Port Orchard | 168 | Not sampled | 0 |
| Pirates Cove Country Club | Shelton | 168 | Not sampled | 0 |
| Rainbow Lake | Shelton | 168 | Not sampled | 0 |
| Camano West Water Association | Stanwood | 167 | Not sampled | 0 |
| Canal Mutual Water | Union | 167 | Not sampled | 0 |
| Orient Water Company | Republic | 167 | Not sampled | 60 |
| Lakeside Shores Improvement Assoc. | Arlington | 166 | Not sampled | 0 |
| Buck Creek | Raymond | 165 | Not sampled | 1 |
| Farmington Water Dept | Farmington | 165 | Not sampled | 0 |
| Horsfall 608 | Lacey | 165 | Not sampled | 0 |
| Laurel Park Community LLC | Shelton | 165 | Not sampled | 0 |
| Mayfield Rv Park | Sammamish | 165 | Not sampled | 0 |
| One Point Fosdick Water Company | Port Orchard | 165 | Not sampled | 0 |
| Orchard Water Assoc | Ferndale | 165 | Not sampled | 0 |
| Quail Run Mobile Home Park | Ellensburg | 165 | Not sampled | 0 |
| Wahl Water Assoc | Bellingham | 165 | Not sampled | 0 |
| Cape San Juan Water District | Friday Harbor | 164 | Not sampled | 13 |
| Cascade Village MHP | Ellensburg | 164 | Not sampled | 0 |
| Bellwood A | Union | 163 | Not sampled | 0 |
| Chelan Co PUD - Dryden | Wenatchee | 163 | Not sampled | 0 |
| Country Villa Mobile Park | Colville | 162 | Not sampled | 1 |
| Mount St Michaels School & Church | Spokane | 162 | Not sampled | 0 |
| Nisqually Highlands 364 | Lacey | 162 | Not sampled | 0 |
| Alta Lake Golf Course Plat | East Wentachee | 161 | Not sampled | 0 |
| Bon Air Community Club Inc. | Oak Harbor | 160 | Not sampled | 0 |
| Sunset Water Distribution Assoc | Stanwood | 159 | Not sampled | 0 |
| Beacon Point Community Club | Shelton | 158 | Not sampled | 0 |
| Chuckanut Trails Water System | Lynden | 158 | Not sampled | 0 |
| Tyee Beach Water Association | Camano Island | 158 | Not sampled | 0 |
| Cedar Grove | Tacoma | 156 | Not sampled | 0 |
| Derbyshire Scenic Acres | Port Orchard | 156 | Not sampled | 0 |
| Fobes Water District | Snohomish | 156 | Not sampled | 0 |
| Mutiny Bay Park Water Association | Coupeville | 156 | Not sampled | 0 |
| Palomino Fields | Cle Elum | 156 | Not sampled | 0 |
| Snow Creek | Port Townsend | 156 | Not sampled | 0 |
| Bear Cub | Port Orchard | 155 | Not sampled | 1 |
| Lake Meridian Estates (MHP) | Kent | 154 | Not sampled | 0 |
| Shadowood | Shelton | 154 | Not sampled | 2 |
| Cedarwood 763 | Lacey | 153 | Not sampled | 0 |
| Silvana Water Association | MT Vernon | 153 | Not sampled | 0 |
| Westshore Water Company | Moses Lake | 153 | Not sampled | 0 |
| Evergreen Valley | Cle Elum | 152 | Not sampled | 0 |
| Lighthouse Shores | Coupeville | 152 | Not sampled | 0 |
| Rhodena Beach Water District | Coupeville | 152 | Not sampled | 0 |
| Sunrise Terrace Community LLC | Port Orchard | 152 | Not sampled | 0 |
| Driftwood Valley Assoc (Dva) | Tacoma | 151 | Not sampled | 0 |
| Skyline Acres Inc | Moses Lake | 151 | Not sampled | 0 |
| Sportsman Trailer Park | Ellensburg | 151 | Not sampled | 0 |
| Alps Mobile Home Park | Yakima | 150 | Not sampled | 0 |
| Boots & Saddles 662 | Lacey | 150 | Not sampled | 0 |
| Country Estates | Port Orchard | 150 | Not sampled | 0 |
| East Ridge Park | Yakima | 150 | Not sampled | 0 |
| Evergreen Water & Improvement Assn | Port Orchard | 150 | Not sampled | 0 |
| Fircrest Community Water System | Coupeville | 150 | Not sampled | 0 |
| Flauras Acres Propertyowner | Sequim | 150 | Not sampled | 0 |
| Four Creeks Ranch Water System | Issaquah | 150 | Not sampled | 0 |
| Mission Creek Tracts | Belfair | 150 | Not sampled | 0 |
| Palermo 691 | Lacey | 150 | Not sampled | 0 |
| Panorama Mobile Home Park | Colville | 150 | Not sampled | 0 |
| Pomona Artesian Irrigation Company | Yakima | 150 | Not sampled | 0 |
| Possession Shores Inc | Coupeville | 150 | 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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