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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.

System Name PWSID State Type Population Served
MOSES LAKE CITY OF WA5356300 WA Community 32,428
FIFE DEPT OF PUBLIC WORKS WA5325050 WA Community 32,380
SPANAWAY WATER COMPANY WA5382850 WA Community 31,908
CAMAS MUNICIPAL WATER SEWER SYSTEM WA5310800 WA Community 31,794
North City Water District WA5339600 WA Community 31,744
MERCER ISLAND CITY OF WA5353640 WA Community 30,689
QUIL CEDA VILLAGE 105300116 WA Non-Transient Non-Community 30,000
BATTLE GROUND WATER DEPT CITY OF WA5304700 WA Community 29,974
PULLMAN WATER DEPARTMENT CITY OF WA5369880 WA Community 29,690
PARKLAND LIGHT & WATER COMPANY WA5366200 WA Community 29,595
PORT ANGELES CITY OF WA5368550 WA Community 28,946
West Sound Utility District #1 WA5302600 WA Community 28,928
CEDAR RIVER WATER & SEWER DISTRICT WA5341800 WA Community 28,671
CENTRALIA PUBLIC WORKS - WATER WA5312200 WA Community 28,164
WHITWORTH WATER DISTRICT 2 WA5396601 WA Community 26,883
SILVERDALE WATER DIST 16 WA5379300 WA Community 26,634
EAST WENATCHEE WATER DISTRICT WA5321800 WA Community 26,519
MOUNTLAKE TERRACE CITY OF WA5357250 WA Community 26,402
Mukilteo Water & Wastewater Distr WA5357550 WA Community 25,182
GORGE AMPHITHEATRE WA5362514 WA Transient Non-Community 25,015
VERA WATER & POWER WA5391450 WA Community 24,692
NORTH PERRY AVE WATER DISTRICT WA5360950 WA Community 24,402
Lake Meridian Water District WA5341900 WA Community 24,231
OAK HARBOR CITY OF WA5362650 WA Community 23,767
MONROE WATER SYSTEM WA5355820 WA Community 23,467
ENUMCLAW WATER DEPARTMENT WA5323600 WA Community 23,276
CROSS VALLEY WATER DISTRICT WA5316270 WA Community 23,054
LOGE CAMP MT. SHASTA CA4700563 WA Transient Non-Community 21,938
PUD #1 OF ASOTIN COUNTY WA5393343 WA Community 21,930
WASHINGTON STATE UNIVERSITY WA5393200 WA Community 21,506
WASHOUGAL CITY OF WA5393400 WA Community 21,441
CONSOLIDATED IRRIG DIST 19 SYSTEM 2 WA5310221 WA Community 21,220
ANACORTES CITY OF WA5302200 WA Community 21,105
RIDGEFIELD PUBLIC WORKS WA5372400 WA Community 20,967
ELLENSBURG WATER DEPT WA5322950 WA Community 20,900
ARLINGTON CITY OF WA5302950 WA Community 20,418
KING COUNTY WATER DISTRICT NO 90 WA5341150 WA Community 20,100
FERNDALE WA5324850 WA Community 19,305
SPO CO WATER DIST 3 SYS 1 WA5393351 WA Community 18,983
MODERN ELECTRIC WATER CO WA5355600 WA Community 18,487
ROSE HILL WATER DISTRICT WA5340850 WA Community 18,300
WEST RICHLAND CITY OF WA5394900 WA Community 18,280
LYNDEN WATER DEPARTMENT WA5349150 WA Community 17,969
ABERDEEN CITY OF WA5300050 WA Community 17,958
SHELTON CITY OF WA5378170 WA Community 17,575
KING COUNTY WATER DISTRICT #125 WA5341998 WA Community 17,546
POULSBO CITY OF WA5369150 WA Community 17,180
EASTERN WASHINGTON UNIVERSITY WA5321900 WA Community 17,108
SUNNYSIDE CITY OF WA5385400 WA Community 17,037
PORT TOWNSEND CITY OF WA5369000 WA Community 16,977