Washington utilities 801 to 900.
Each serves 216 to 260 people, as it reports to EPA. Your ZIP code finds yours faster.
801 to 900 of 2,220, by people served
| Utility | Based in | Serves | Regulated PFAS | Health-based violations since 2016 |
|---|---|---|---|---|
| Sandflat Water Association | Tonasket | 260 | Not sampled | 0 |
| Suncrest Plat Water System | Tonasket | 260 | Not sampled | 0 |
| Tamoshan | Olympia | 260 | Not sampled | 10 |
| Y - Squalicum Water Assn | Lynden | 260 | Not sampled | 0 |
| Guide Meridian Water Association | Lynden | 258 | Not sampled | 0 |
| Cole | Tacoma | 257 | Not sampled | 0 |
| Walczak 620 | Lacey | 256 | Not sampled | 0 |
| Parker Spring Acres Water Assoc | Moses Lake | 255 | Not sampled | 13 |
| Cypress Country Estates | Othello | 253 | Not sampled | 0 |
| Stevens Co PUD - Addy | Loon Lake | 253 | Not sampled | 0 |
| Deer Creek Water Assn/Guide South | Bellingham | 251 | Not sampled | 0 |
| Emerald Heights | Port Orchard | 251 | Not sampled | 0 |
| Aqua Copia/Horse Country Estates | Snohomish | 250 | Not sampled | 0 |
| Blalock Orchard Dist 10 | Walla Walla | 250 | Not sampled | 0 |
| Coleman Butte Water Assn | Tonasket | 250 | Not sampled | 0 |
| Eagle Ridge | Arlington | 250 | Not sampled | 0 |
| Great Western Mobile Home Park | Vancouver | 250 | Not sampled | 0 |
| Percie Road Water Association | Lynden | 250 | Not sampled | 0 |
| Prairie Ridge 605 | Lacey | 250 | Not sampled | 1 |
| Sunrise Water Association | Moses Lake | 250 | Not sampled | 0 |
| Washtucna Water Department | Washtucna | 250 | Not sampled | 0 |
| Western Ranchettes Inc. | Black Diamond | 250 | Not sampled | 0 |
| Hartline Water System | Yakima | 249 | Not sampled | 1 |
| Pinecroft Mobile Home Park | Port Orchard | 248 | Not sampled | 10 |
| Field of Dreams | Port Orchard | 247 | Not sampled | 0 |
| Camano City Community Club Inc | Stanwood | 246 | Not sampled | 0 |
| Tempo Lake Water Co | Port Orchard | 246 | Not sampled | 0 |
| Marbello | Sun Valley | 245 | Not sampled | 0 |
| Metz Community & Rv LLC | Port Orchard | 245 | Not sampled | 0 |
| Mill Pond Community LLC | Port Orchard | 245 | Not sampled | 0 |
| Crescent View Condominium Owners | Quincy | 243 | Not sampled | 0 |
| Shirona Water System | Coupeville | 243 | Not sampled | 2 |
| King County Water District #123 | Port Orchard | 242 | Not sampled | 1 |
| Kittitas Co WD #2 | Ronald | 242 | Not sampled | 0 |
| Valleyhi Community Club | Cashmere | 242 | Not sampled | 0 |
| Columbus Park | Port Orchard | 241 | Not sampled | 0 |
| Vistas Inc | Sequim | 241 | Not sampled | 1 |
| Dixie Water Association | Walla Walla | 240 | Not sampled | 1 |
| Hide - Away Water Company Inc | Coupeville | 240 | Not sampled | 3 |
| Rathbone Park Water Assoc | Ferndale | 240 | Not sampled | 5 |
| Ridgeview Estates Water Association | Moses Lake | 240 | Not sampled | 0 |
| Summerset West Water Association | Othello | 240 | Not sampled | 0 |
| Timberline Mobile Home Park | Port Orchard | 240 | Not sampled | 0 |
| Utsalady Heights Owners Assn | MT Vernon | 240 | Not sampled | 0 |
| Cal Waterworks | Freeland | 239 | Not sampled | 0 |
| Olalla | Tacoma | 239 | Not sampled | 0 |
| Majestic Mobile Manor | Port Orchard | 238 | Not sampled | 0 |
| Skagit Co PUD - Marblemount | Mount Vernon | 238 | Not sampled | 0 |
| Ocean City | Montesano | 237 | Not sampled | 0 |
| Hemmi Road Water Association | Everson | 236 | Not sampled | 0 |
| Kopachuck | Tacoma | 236 | Not sampled | 0 |
| Fragaria Landing | Port Orchard | 235 | Not sampled | 0 |
| Holiday Hideaway Water Co | MT Vernon | 235 | Not sampled | 0 |
| Strawberry Hill | Poulsbo | 235 | Not sampled | 0 |
| Columbia Riverfront Rv Park | Woodland | 233 | Not sampled | 0 |
| Island Lake Manor | Shelton | 233 | Not sampled | 0 |
| Maury Mutual Water Co | Vashon | 233 | Not sampled | 0 |
| Murdock Water | Dallesport | 233 | Not sampled | 0 |
| Port Madison Water Company | Port Orchard | 233 | Not sampled | 0 |
| Nelson Ridge | Tacoma | 232 | Not sampled | 0 |
| Skagit View Village Water System | Mount Vernon | 232 | Not sampled | 0 |
| Carriage Club Estates | Port Orchard | 230 | Not sampled | 0 |
| East Olympia 684 | Lacey | 230 | Not sampled | 0 |
| North Graham Water | Lacey | 229 | Not sampled | 0 |
| Belfern Water Association | Lynden | 228 | Not sampled | 0 |
| Brays Landing Water Users | Wenatchee | 228 | Not sampled | 0 |
| Camelot and Western Skies | Tacoma | 228 | Not sampled | 0 |
| Holden Village | Chelan | 228 | Not sampled | 3 |
| Sunset Beach | Port Orchard | 228 | Not sampled | 0 |
| Bayview Estates Water Company | Oak Harbor | 227 | Not sampled | 0 |
| Sentinel Gap Water Assn | Mattawa | 226 | Not sampled | 0 |
| Bronson Beach Club | Tenino | 225 | Not sampled | 1 |
| Cristalina | Tacoma | 225 | Not sampled | 0 |
| Four Seasons Park | Sequim | 225 | Not sampled | 1 |
| Jackson Lake South | Tacoma | 225 | Not sampled | 0 |
| Lochaven Water | Arlington | 225 | Not sampled | 0 |
| Loomis Water Users Assn Inc | Tonasket | 225 | Not sampled | 0 |
| Seashore Villa | Port Orchard | 225 | Not sampled | 0 |
| Schluter Water Association | Arlington | 224 | Not sampled | 0 |
| Glen Cove Water Inc. | Gig Harbor | 223 | Not sampled | 0 |
| Davis Terrace Water Assn | Woodland | 222 | Not sampled | 0 |
| Driftwood Shores Water System Inc | MT Vernon | 222 | Not sampled | 1 |
| Maple Falls Water Coop | Maple Falls | 222 | Not sampled | 0 |
| Rustic Ridge | Othello | 221 | Not sampled | 0 |
| Wollochet Harbor Club Inc | Gig Harbor | 221 | Not sampled | 0 |
| Cougar Mountain | Port Orchard | 220 | Not sampled | 0 |
| Grove Terrace MHP Two LLC | Moses Lake | 220 | Not sampled | 3 |
| Hanson Harbor Homeowners Assn | Tonasket | 220 | Not sampled | 0 |
| Meadowood Development | McCleary | 220 | Not sampled | 0 |
| Panorama Place Water Assn | Yakima | 220 | Not sampled | 0 |
| Strattonwood | Tacoma | 220 | Not sampled | 0 |
| Roosevelt Water System | Goldendale | 219 | Not sampled | 0 |
| Saddle Mountain Water Assoc. | Moses Lake | 219 | Not sampled | 1 |
| Nisqually Park | Tacoma | 218 | Not sampled | 0 |
| Afc Ranch 1 | Tonasket | 217 | Not sampled | 0 |
| Shaws Cove | Tacoma | 217 | Not sampled | 0 |
| Cougar Ridge | Shelton | 216 | Not sampled | 0 |
| Indian Ridge Water Association | Tulalip | 216 | Not sampled | 0 |
| Oak Meadows Mobile Home Park | Vancouver | 216 | Not sampled | 0 |
| Stevens Co PUD - Halfmoon Ranchos | Loon Lake | 216 | 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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