Public Water Systems
4,557 active public water systems in WA, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Alder Lake Park Water System | Eatonville, WA | 934 | 1 | - |
| Preston Industrial Park Water Assn | Port Orchard, WA | 930 | 175 | - |
| Whitehorse Mercantile Water System | Arlington, WA | 930 | 22 | - |
| Sunwood Lakes Homeowners Assoc Inc | Port Orchard, WA | 925 | 49 | - |
| Long Lake View Est 2 5 | Poulsbo, WA | 923 | 21 | - |
| Puget Island | Cathlamet, WA | 920 | 7 | - |
| Lake Cushman System 3 | Hoodsport, WA | 917 | 23 | - |
| Birch Bay Square Water Operation | Lynden, WA | 915 | 40 | - |
| Country/Eldorado Water System | Puyallup, WA | 915 | 14 | - |
| Lake Lawrence | Tacoma, WA | 914 | 18 | - |
| Lind Town Of | Lind, WA | 903 | 44 | - |
| Pioneer School District | Shelton, WA | 903 | 39 | - |
| Winchester Eb Rest Area | Ephrata, WA | 903 | 11 | - |
| Freeman School Dist #358 | Rockford, WA | 900 | 163 | - |
| Scatchet Head Water District | Coupeville, WA | 900 | 27 | - |
| Meridian School Complex | Lynden, WA | 900 | 24 | - |
| Roosevelt Park | Rufus, WA | 899 | 8 | - |
| Solmar Water | Sequim, WA | 895 | 11 | - |
| Island Lake | Freeland, WA | 883 | 21 | - |
| Potholes General Store | Moses Lake, WA | 877 | 25 | - |
| Carbonado Water Dept | Carbonado, WA | 875 | 210 | - |
| Lewisville Park | Vancouver, WA | 875 | 12 | - |
| Keller Ferry Marina | Coulee dam, WA | 875 | 4 | - |
| Rolling Hills-Glencairn | Oak Harbor, WA | 872 | 46 | - |
| Johns Farms | Brewster, WA | 872 | 4 | - |
| Admirals Cove Water District | Freeland, WA | 870 | 51 | - |
| Adams County Water Dist #1 | Othello, WA | 870 | 25 | - |
| Lake of the Woods Community Club | Gig Harbor, WA | 870 | 12 | - |
| Okanogan County Fair Water System | Okanogan, WA | 867 | 20 | - |
| Pe Ell Town Of | Pe Ell, WA | 859 | 434 | - |
| Daroga State Park North | Wenatchee, WA | 849 | 46 | - |
| Fishhook Park | Prescott, WA | 846 | 44 | - |
| Horn School Rest Area | Colfax, WA | 833 | 4 | - |
| Mossyrock Park Power House | Silver Creek, WA | 832 | 16 | - |
| Rosalia Town Of | Rosalia, WA | 831 | 64 | - |
| Hangman Hills Water Dist 15 | Marshall, WA | 827 | 24 | - |
| Camaloch Association | Coupeville, WA | 825 | 16 | - |
| Lake Merwin Campers Hideaway Sys 1 | Woodland, WA | 820 | 497 | - |
| Penrose Point State Park | Belfair, WA | 816 | 7 | - |
| Concrete Utilities | Mount Vernon, WA | 810 | 25 | - |
| Diamond Point | Freeland, WA | 810 | 27 | - |
| Highland Quick Stop | Yakima, WA | 801 | 15 | - |
| Alpowa Summit Rest Area | Clarkston, WA | 801 | 11 | - |
| St John Town Of | Washtucna, WA | 800 | 43 | - |
| Newhalem Campground & Visitor Ctr | Marblemount, WA | 800 | 1 | - |
| Rosedale East | Tacoma, WA | 798 | 23 | - |
| Whatcom County Water Dist 13 | Maple Falls, WA | 795 | 259 | Clean |
| Sucia Island State Park | Olga, WA | 794 | 12 | - |
| Western Wahkiakum | Cathlamet, WA | 791 | 66 | - |
| Valle Lindo Homes | Walla Walla, WA | 787 | 29 | - |