Washington utilities 901 to 1,000.
Each serves 180 to 215 people, as it reports to EPA. Your ZIP code finds yours faster.
901 to 1,000 of 2,220, by people served
| Utility | Based in | Serves | Regulated PFAS | Health-based violations since 2016 |
|---|---|---|---|---|
| Malden Water Dept | Rosalia | 215 | Not sampled | 0 |
| Riverhill Homeowners Assn | Belfair | 215 | Not sampled | 0 |
| Colony Mountain | Lynden | 213 | Not sampled | 1 |
| Juniper Beach Water District | Arlington | 213 | Not sampled | 0 |
| Apple Acres Village | Yakima | 212 | Not sampled | 0 |
| Four Lakes | Lake Forest Park | 212 | Not sampled | 0 |
| South Auburn Water Association | Black Diamond | 212 | Not sampled | 0 |
| Baby Island Heights Water Assoc | Freeland | 211 | Not sampled | 0 |
| Candlewood Mobile Manor | Port Orchard | 211 | Not sampled | 0 |
| Trails End Water District | Shelton | 211 | Not sampled | 0 |
| Cumberland Coop Water System | Port Orchard | 210 | Not sampled | 0 |
| Dana Passage 523 | Lacey | 210 | Not sampled | 0 |
| Priddy Vista | Poulsbo | 210 | Not sampled | 0 |
| Roseland Community Club Association | Arlington | 210 | Not sampled | 0 |
| Steptoe Water/Sewer District | Colfax | 210 | Not sampled | 0 |
| Tel Company#1 | Freeland | 210 | Not sampled | 0 |
| Weatherswood Vista Water District | Gig Harbor | 210 | Not sampled | 0 |
| Point Fosdick | Gig Harbor | 209 | Not sampled | 0 |
| Woodland Mhc LLC | Port Orchard | 209 | Not sampled | 0 |
| Othello Country Club Water Assn | Othello | 208 | Not sampled | 0 |
| Melody Pines MHP LLC | Port Orchard | 207 | Not sampled | 0 |
| Mullen Hill Terrace MHP | Spokane | 207 | Not sampled | 0 |
| Pine Lake Mobile Home Est 1 3 | Tacoma | 207 | Not sampled | 0 |
| West Sound Water Association | Eastsound | 206 | Not sampled | 0 |
| Westmont Acres | Soap Lake | 206 | Not sampled | 0 |
| Forest Beach Water System | Gig Harbor | 204 | Not sampled | 0 |
| Stevens Co PUD - Jump Off Joe | Loon Lake | 204 | Not sampled | 0 |
| Triton Cove | Port Townsend | 204 | Not sampled | 0 |
| Auburn Park Community LLC | Port Orchard | 202 | Not sampled | 0 |
| Ledgewood Beach Water District | Freeland | 202 | Not sampled | 0 |
| Star Lake Community Club | Port Orchard | 201 | Not sampled | 0 |
| Buena Vista Community Club | MT Vernon | 200 | Not sampled | 0 |
| Country Place Mobile Home Park | Coupeville | 200 | Not sampled | 0 |
| Deep Creek Ranchettes | Port Orchard | 200 | Not sampled | 0 |
| Maple Glen Community Association | Freeland | 200 | Not sampled | 0 |
| Monte View Estates | Montesano | 200 | Not sampled | 0 |
| Mount Si Mobile Home Estates | North Bend | 200 | Not sampled | 0 |
| Mountain Loop View Tracts | Lake Stevens | 200 | Not sampled | 0 |
| Neptune Beach Water Assoc | Lynden | 200 | Not sampled | 0 |
| Paradise Park Water System | Ferndale | 200 | Not sampled | 0 |
| Polnell Shores Comm Org Inc | Coupeville | 200 | Not sampled | 0 |
| Radar Community LLC | Port Orchard | 200 | Not sampled | 0 |
| Red Mountain Water Association | Pasco | 200 | Not sampled | 0 |
| Wallula Water District | College Place | 200 | Not sampled | 0 |
| Hillcrest Mobile Home Park | Lakewood | 198 | Not sampled | 0 |
| Mountain Park Water System | Gig Harbor | 198 | Not sampled | 0 |
| Sierra Vista Water Association | Camano Island | 197 | Not sampled | 0 |
| Lwwsd - Eagleridge | Bellingham | 196 | Not sampled | 0 |
| Sundquist Sunnyslope Domestic | Yakima | 196 | Not sampled | 0 |
| Honeymoon Lake | Arlington | 195 | Not sampled | 0 |
| Tolmie Park 239 | Lacey | 195 | Not sampled | 0 |
| Harris Custer Estates Water Assn | MT Vernon | 194 | Not sampled | 1 |
| Town of Latah | Waverly | 194 | Not sampled | 0 |
| Blalock Orchards Dist 12 | Walla Walla | 193 | Not sampled | 0 |
| Finisterre Heights Water System | MT Vernon | 193 | Not sampled | 0 |
| Lee | Tacoma | 193 | Not sampled | 0 |
| Metaline Water Dept | Lone | 193 | Not sampled | 0 |
| Outlaw Camp | Cle Elum | 193 | Not sampled | 0 |
| Sundquist Twh - Terrace Heights | Yakima | 192 | Not sampled | 0 |
| Woodland Manor | Union | 192 | Not sampled | 0 |
| Yak Co - Crewport | Yakima | 192 | Not sampled | 0 |
| Discovery Bay Village | Sequim | 191 | Not sampled | 0 |
| Marcus Water Dept | 191 | Not sampled | 0 | |
| Ridgewood 609 | Lacey | 191 | Not sampled | 0 |
| Vuecrest | Union | 191 | Not sampled | 0 |
| Beacon Hill East | Kelso | 190 | Not sampled | 0 |
| Kitsap West Mhc Water Co | Port Orchard | 190 | Not sampled | 0 |
| Pineloch Sun Beach Club | Ronald | 190 | Not sampled | 0 |
| Clark Addition Water System | Pasco | 189 | Not sampled | 0 |
| Harbor Heights | Tacoma | 188 | Not sampled | 0 |
| Richardson Water Company | Yakima | 188 | Not sampled | 0 |
| Sun Harbor Water District #3 | Burbank | 187 | Not sampled | 0 |
| Bird Dog Family Ltd Partnership II | Othello | 186 | Not sampled | 0 |
| Cedar Ridge 617 | Lacey | 186 | Not sampled | 0 |
| Country Club Estates Water System | Moses Lake | 186 | Not sampled | 0 |
| Mountain View Water Association | Lynden | 186 | Not sampled | 0 |
| Newaukum Ventures | Napavine | 186 | Not sampled | 0 |
| Sunrise Hills Community W S | Oak Harbor | 186 | Not sampled | 0 |
| Chippewa Water District | Ione | 185 | Not sampled | 0 |
| Kopachuck Ridge Water District | Gig Harbor | 185 | Not sampled | 0 |
| Roy 325th 668 | Lacey | 185 | Not sampled | 0 |
| Valley View Water Assoc | Lynden | 185 | Not sampled | 0 |
| Enterprise Estates Water Assoc. | Ferndale | 184 | Not sampled | 0 |
| Burnsville 676 | Lacey | 183 | Not sampled | 0 |
| Parkshore Estates | Tacoma | 183 | Not sampled | 0 |
| Ranch | Tacoma | 183 | Not sampled | 0 |
| Spanaway 192nd 669 | Lacey | 183 | Not sampled | 0 |
| Burns Point | Port Orchard | 182 | Not sampled | 0 |
| Clear Lake Water Users Assn | Reardan | 182 | Not sampled | 0 |
| Long Point Water Company Inc | Port Orchard | 182 | Not sampled | 1 |
| Dungeness Beach | Sequim | 181 | Not sampled | 0 |
| Malone | Napavine | 181 | Not sampled | 0 |
| Pine Terrace Water Association | Coupeville | 181 | Not sampled | 1 |
| Country Mobile Estates | Yakima | 180 | Not sampled | 0 |
| Deception Park View | Port Orchard | 180 | Not sampled | 0 |
| Evergreen Mobile Park & Sales | Lynden | 180 | Not sampled | 1 |
| Highland Park | Shelton | 180 | Not sampled | 0 |
| Holiday Valley | Port Orchard | 180 | Not sampled | 0 |
| Lakeside Park | Port Orchard | 180 | Not sampled | 5 |
| Lombard Loop Water Association | Wapato | 180 | 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
- Filters, checkedEvery filter TapBuff has checked against a certifier’s listing, with five-year costs.Compare filters