Public Water Systems
4,557 active water systems in WA.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| MONTERRA | SEQUIM, WA | 464 | 25 | — |
| LITTLEROCK ELEMENTARY | Tumwater, WA | 463 | 33 | — |
| LAKE ALYSON | Freeland, WA | 463 | 13 | — |
| KITTITAS COUNTY WATER DISTRICT #7 | CLe elum, WA | 463 | 21 | — |
| DUNGENESS BAY PLAT | SEQUIM, WA | 461 | 6 | — |
| HARTSTENE POINTE | SHELTON, WA | 460 | 20 | — |
| PENN COVE WATER AND SEWER DISTRICT | Oak Harbor, WA | 460 | 37 | — |
| WILKSHIRE LANE WATER DISTRICT INC | Arlington, WA | 460 | 6 | — |
| DUGUALLA COMMUNITY INC | Oak Harbor, WA | 459 | 6 | — |
| Chehalis Livestock Auction & Cafe | Chehalis, WA | 457 | 11 | — |
| WANDERING CREEK HOMEOWNERS ASSOC | Bothell, WA | 457 | 5 | — |
| CRESAP BAY PARK AND CAMPGROUND | Woodland, WA | 456 | 5 | — |
| CHINOOK ESTATES | Puyallup, WA | 455 | 10 | — |
| Thunderbird Park | Monsey, WA | 454 | 94 | — |
| BLACK DIAMOND WATER DISTRICT | PORT ANGELES, WA | 452 | 98 | — |
| FINLEY ELEMENTARY SCHOOL (NEW) | Cle Elum, WA | 450 | 33 | — |
| COUNTRY MANOR MOBILE HOME PARK | Port Orchard, WA | 450 | 23 | — |
| DELTA WATER ASSOCIATION | Lynden, WA | 450 | 492 | — |
| VAUGHN ELEMENTARY SCHOOL | Gig Harbor, WA | 450 | 2 | — |
| Maple Lane Behavioral Health | Centralia, WA | 450 | 56 | — |
| PANORAMA POINT CAMPGROUND | Enumclaw, WA | 450 | 10 | — |
| CARROLLS WATER ASSN | Napavine, WA | 449 | 238 | — |
| Port of Royal Slope | Royal City, WA | 447 | 76 | — |
| ROSEDALE HEIGHTS TRAILER PARK | Tacoma, WA | 444 | 11 | — |
| BEVIN LAKE REST AREA | Chehalis, WA | 443 | 9 | — |
| PIONEER WATER COMPANY | Marshall, WA | 443 | 46 | — |
| Villa Grove | Olympia, WA | 442 | 51 | — |
| DOE BAY WATER USERS ASSOC | Eastsound, WA | 442 | 66 | — |
| BRIDGEPORT STATE PARK | Pateros, WA | 441 | 15 | — |
| GRACE BIBLE CHURCH | Port Orchard, WA | 436 | 1 | — |
| COMBINED WATER SYSTEM | Coupeville, WA | 435 | 62 | — |
| MAPLEWOOD ADDITION WATER COOP | Renton, WA | 435 | 80 | — |
| RYDERWOOD IMPROVEMENT & SERVICE AS | Kelso, WA | 434 | 95 | — |
| FOUR LAKES WATER DISTRICT 10 | Four Lakes, WA | 433 | 22 | — |
| SKAGIT CO PUD - ALGER | Mount Vernon, WA | 432 | 16 | — |
| HMC Management Water System | Port Orchard, WA | 432 | 22 | — |
| SEVEN BAYS ESTATES UNLIMITED | Marshall, WA | 431 | 31 | — |
| Craven Farm Water System | Snohomish, WA | 431 | 9 | — |
| ROYAL WATER DISTRICT | Othello, WA | 430 | 75 | — |
| ECHO GLEN CHILDRENS CENTER | Snoqualmie, WA | 430 | 115 | — |
| RIVERSIDE TOWN OF | Riverside, WA | 429 | 111 | — |
| SARATOGA BEACH OWNERS ASSN | Freeland, WA | 425 | 10 | — |
| SILVER LAKE WATER | Freeland, WA | 425 | 9 | — |
| HAWLEY HILLS 686 | Lacey, WA | 425 | 14 | — |
| CISPUS ENVIRONMENTAL CENTER | Randle, WA | 423 | 16 | — |
| CROSSWOODS WATER COMPANY | Coupeville, WA | 420 | 9 | — |
| INDEX WATER DEPT | INDEX, WA | 420 | 130 | — |
| BIG BEND LANDOWNERS ASSOCIATION | Monroe, WA | 419 | 194 | — |
| HENDERSON BOULEVARD | Tacoma, WA | 418 | 19 | — |
| MIRACLE RANCH | Gig Harbor, WA | 418 | 21 | — |