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Browse Water Systems

10,030 public water systems in WA.

Public Water Systems Database

Browse 10,030 EPA-regulated public water systems with identifiers, population served, and water source type. Use the filters below to narrow results by state, system type, or name.

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System Name PWSID State Type Population Served
HATTON COULEE REST AREA WA53HD280 Washington Transient Non-Community 3,882
KING COUNTY WATER DISTRICT 119 WA5341985 Washington Community 3,796
EVERSON CITY OF WA5324200 Washington Community 3,788
SPO CO WATER DIST 3 SYS 3 WA5393353 Washington Community 3,765
GRAND MOUND WA5307158 Washington Community 3,764
SCHRAG EB/WB REST AREAS WA53HD650 Washington Transient Non-Community 3,734
PARKVIEW TERRACE WA5366215 Washington Community 3,730
WATER DISTRICT 19 WA5338900 Washington Community 3,723
EASTSOUND WATER USERS ASSOCIATION WA5322170 Washington Community 3,711
LUMMI TRIBAL WATER DISTRICT 105300002 Washington Community 3,699
LAKE CUSHMAN SYSTEM 5 WA5303529 Washington Community 3,675
EATONVILLE WATER DEPT WA5322300 Washington Community 3,645
TOUTLE RIVER REST AREA NB/SB WA53HD840 Washington Transient Non-Community 3,590
FRIDAY HARBOR TOWN OF WA5326595 Washington Community 3,543
ZILLAH CITY OF WA5399800 Washington Community 3,518
NACHES TOWN OF WA5358100 Washington Community 3,512
COLFAX WATER DEPARTMENT CITY OF WA5314000 Washington Community 3,507
WINLOCK CITY OF WA5397500 Washington Community 3,502
ROOSEVELT WATER ASSOCIATION WA5374150 Washington Community 3,493
MILLERSYLVANIA STATE PARK WA53SP530 Washington Transient Non-Community 3,456
HORIZONS WEST WA5334375 Washington Community 3,454
LEGENDS CASINO 105300153 Washington Non-Transient Non-Community 3,450
ROYAL CITY WATER WA5374700 Washington Community 3,389
CID #19-CORBIN WA5310223 Washington Community 3,340
Tenino City of WA5387400 Washington Community 3,336
GALES ADDITION LUD 2,3,6 WA5327090 Washington Community 3,329
CONSOLIDATED IRRG.DIST.#19,SYS.#3 WA5310222 Washington Community 3,300
SHINING MOUNTAIN COMPLEX W.S. WA5308276 Washington Non-Transient Non-Community 3,300
DAYTON WATER DEPARTMENT WA5318250 Washington Community 3,283
WASHINGTON STATE PENITENTIARY WA5393140 Washington Community 3,278
NEWPORT CITY OF WA5359350 Washington Community 3,258
OROVILLE CITY OF WA5364400 Washington Community 3,256
Fox Island Mutual Water Assoc WA5326300 Washington Community 3,255
MUCKLESHOOT 105300013 Washington Community 3,250
BREWSTER CITY OF WA5308300 Washington Community 3,235
Rock Island Water Dept City of WA5373401 Washington Community 3,226
AMES LAKE WATER ASSOC INC WA5302055 Washington Community 3,224
NISQUALLY-LESCHI & WEST NISQUALLY 105300014 Washington Community 3,200
MT. VISTA - DUNGENESS GOLF COURSE 105388889 Washington Community 3,200
STROHS WATER COMPANY INC WA5384670 Washington Community 3,192
ALGONA WATER DEPT WA5301450 Washington Community 3,180
TWANOH STATE PARK WA53SP940 Washington Transient Non-Community 3,173
LAKE FOREST PARK WATER DISTRICT WA5340950 Washington Community 3,171
MAYTOWN REST AREA WA53HD445 Washington Transient Non-Community 3,134
HIGHLAND WATER DISTRICT WA5332850 Washington Community 3,121
MEADOWS 690 WA5387784 Washington Community 3,100
BOX CANYON WA53NP040 Washington Transient Non-Community 3,099
NAPAVINE CITY OF WA5358200 Washington Community 3,095
OLYMPIC WATER & SEWER INC WA5368700 Washington Community 3,086
Snake River Housing Water System WA5300710 Washington Community 3,036