U.S. water systems

Washington Water Systems

Washington

3,900 community water systems on record — 2,311 active, 1,589 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Washington’s official records. Always confirm current status with Washington before making decisions based on this information.

All community water systems in Washington

System name	Mailing city	Population served	Status
SEATTLE PUBLIC UTILITIES	Seattle	1,161,961	Active
TACOMA WATER DIVISION CITY OF	TACOMA	446,170	Active
VANCOUVER CITY OF	Vancouver	373,047	Active
SPOKANE CITY OF	Spokane	346,138	Active
BELLEVUE CITY OF	Bellevue	321,349	Active
ALDERWOOD WATER DISTRICT	Lynnwood	245,715	Active
EVERETT PUBLIC WORKS DEPT. CITY OF	Everett	215,774	Active
KENT WATER DEPARTMENT	Kent	166,421	Active
REDMOND WATER SYSTEM CITY OF	Redmond	163,335	Active
CLARK PUBLIC UTILITIES	VANCOUVER	153,526	Active
LAKEHAVEN WATER AND SEWER DISTRICT	FEDERAL WAY	148,809	Active
BELLINGHAM-WATER DIVISION CITY OF	Bellingham	141,127	Active
OLYMPIA CITY OF	OLYMPIA	126,966	Active
KENNEWICK CITY OF	Kennewick	118,164	Active
PASCO WATER DEPARTMENT	Pasco	115,102	Active
YAKIMA WATER DIVISION CITY OF	Yakima	112,858	Active
SKAGIT COUNTY PUD 1 JUDY RES	Mount Vernon	111,415	Active
RENTON CITY OF	Renton	108,091	Active
Auburn City of	Auburn	107,655	Active
RICHLAND CITY OF	Richland	106,499	Active
LACEY WATER DEPARTMENT	Lacey	105,178	Active
HIGHLINE WATER DISTRICT	Kent	100,170	Active
NORTHSHORE UTILITY DISTRICT	Kenmore	99,789	Active
PUYALLUP CITY OF	Puyallup	94,520	Active
MARYSVILLE UTILITIES	Marysville	88,582	Active
LAKEWOOD WATER DISTRICT	LAKEWOOD	82,425	Active
SAMMAMISH PLATEAU WATER & SEWER	Sammamish	79,362	Active
SOOS CREEK WATER & SEWER DISTRICT	Renton	74,172	Active
BREMERTON CITY OF	Bremerton	72,951	Active
KIRKLAND CITY OF	Kirkland	69,243	Active
LYNNWOOD CITY OF	Lynnwood	68,204	Active
SNO PUD 1 - LAKE STEVENS	Everett	67,710	Active
WOODINVILLE WATER DISTRICT	Woodinville	66,699	Active
SILVER LAKE WATER & SEWER DISTRICT	Bothell	65,033	Active
SOUTHWOOD	Tacoma	64,155	Active
LONGVIEW WATER DEPARTMENT	Longview	57,617	Active
COVINGTON WATER DISTRICT	Kent	56,172	Active
TUMWATER CITY OF	Tumwater	51,802	Active
KING COUNTY WATER DISTRICT #20	Seattle	48,469	Active
WENATCHEE CITY OF	Wenatchee	43,690	Active
ISSAQUAH WATER SYSTEM	ISSAQUAH	43,584	Active
BONNEY LAKE WATER DEPARTMENT CITY	Buckley	43,371	Active
WALLA WALLA WATER DIVISION	Walla Walla	42,959	Active
NOB HILL WATER ASSOCIATION	Yakima	38,050	Active
TUKWILA WATER DEPARTMENT	Tukwila	36,298	Active
FIRGROVE MUTUAL INC	Puyallup	36,168	Active
JBLM Lewis	Joint Base Lewis-McChord	35,414	Active
SILVERDALE WATER DIST 16	Silverdale	35,163	Active
SPANAWAY WATER COMPANY	Spanaway	34,506	Active
EDMONDS CITY OF	Edmonds	34,065	Active
PARKLAND LIGHT & WATER COMPANY	Tacoma	33,775	Active
BOTHELL WATER CITY OF	Bothell	33,643	Active
North City Water District	Shoreline	32,847	Active
MOSES LAKE CITY OF	Moses Lake	32,428	Active
CAMAS MUNICIPAL WATER SEWER SYSTEM	Camas	31,794	Active
Mukilteo Water & Wastewater Distr	Mukilteo	31,437	Active
PULLMAN WATER DEPARTMENT CITY OF	Pullman	31,315	Active
MERCER ISLAND CITY OF	Mercer Island	31,057	Active
BATTLE GROUND WATER DEPT CITY OF	Battle Ground	30,237	Active
ARLINGTON CITY OF	Arlington	29,508	Active
FIFE DEPT OF PUBLIC WORKS	FIFE	29,091	Active
West Sound Utility District #1	Port Orchard	28,930	Active
CEDAR RIVER WATER & SEWER DISTRICT	Maple Valley	28,671	Active
CENTRALIA PUBLIC WORKS - WATER	Centralia	28,164	Active
PORT ANGELES CITY OF	Port Angeles	28,067	Active
WHITWORTH WATER DISTRICT 2	Mead	26,883	Active
EAST WENATCHEE WATER DISTRICT	East Wenatchee	26,519	Active
MOUNTLAKE TERRACE CITY OF	Mountlake Terrace	26,402	Active
ANACORTES CITY OF	Mount Vernon	25,109	Active
CROSS VALLEY WATER DISTRICT	Snohomish	24,695	Active
VERA WATER & POWER	Spokane Valley	24,692	Active
NORTH PERRY AVE WATER DISTRICT	Bremerton	24,402	Active
Lake Meridian Water District	Kent	24,231	Active
OAK HARBOR CITY OF	Oak Harbor	23,675	Active
KING COUNTY WATER DISTRICT #49	Burien	23,492	Active
MONROE WATER SYSTEM	Monroe	23,467	Active
ENUMCLAW WATER DEPARTMENT	Enumclaw	23,276	Active
ABERDEEN CITY OF	Aberdeen	22,867	Active
PUD #1 OF ASOTIN COUNTY	Clarkston	21,930	Active
KING COUNTY WATER DISTRICT #125	SEATTLE	21,904	Active
WASHINGTON STATE UNIVERSITY	Pullman	21,506	Active
WASHOUGAL CITY OF	Washougal	21,441	Active
WEST RICHLAND CITY OF	West Richland	21,231	Active
RIDGEFIELD PUBLIC WORKS	Ridgefield	21,225	Active
CONSOLIDATED IRRIG DIST 19 SYSTEM 2	Greenacres	21,220	Active
ELLENSBURG WATER DEPT	Ellensburg	20,900	Active
SNOQUALMIE WATER	SNOQUALIME	20,222	Active
KING COUNTY WATER DISTRICT NO 90	Renton	20,100	Active
LYNDEN WATER DEPARTMENT	Lynden	20,062	Active
FERNDALE	Ferndale	19,305	Active
SUMMIT WATER & SUPPLY CO	Tacoma	19,125	Active
SPO CO WATER DIST 3 SYS 1	Spokane	19,035	Active
MODERN ELECTRIC WATER CO	Spokane	18,487	Active
POULSBO CITY OF	Poulsbo	18,400	Active
ROSE HILL WATER DISTRICT	KIRKLAND	18,300	Inactive
OLYMPIC VIEW WATER & SEWER DISTRICT	Edmonds	17,784	Active
STANWOOD WATER DEPT CITY OF	Stanwood	17,586	Active
YELM CITY OF	Yelm	17,355	Active
SUNNYSIDE CITY OF	Sunnyside	17,194	Active
EASTERN WASHINGTON UNIVERSITY	Cheney	17,108	Active
PORT TOWNSEND CITY OF	Port Townsend	17,053	Active
CHENEY CITY OF	Cheney	16,954	Active
NAVAL BASE KITSAP AT BANGOR	Silverdale	16,828	Active
NAVAL AIR STATION/WHIDBEY ISLAND	NAS Whidbey Island	16,595	Active
GIG HARBOR WATER DEPT	Gig Harbor	16,510	Active
NORTH PENINSULA	Poulsbo	16,449	Active
SUMNER CITY OF	Sumner	16,438	Active
SNOHOMISH CITY OF	Snohomish	16,367	Active
CHELAN CO PUD 1	Wenatchee	16,190	Active
COAL CREEK UTILITY DISTRICT	Newcastle	15,989	Active
KELSO CITY OF	KELSO	15,775	Active
PORT ORCHARD WATER DEPT	PORT ORCHARD	15,355	Active
FRUITLAND MUTUAL WATER COMPANY	PUYALLUP	15,313	Active
SHELTON CITY OF	SHELTON	15,089	Active
QUIMPER	Port Townsend	14,548	Active
LIBERTY LAKE SEWER & WATER DISTRICT	Liberty Lake	14,500	Active
SEQUIM CITY OF	SEQUIM	14,293	Active
BAINBRIDGE ISLAND CITY OF	Bainbridge Island	13,491	Active
DUPONT WATER SYSTEM CITY OF	DuPont	13,141	Active
PROSSER CITY OF	Prosser	12,070	Active
SKYWAY WATER & SEWER	Seattle	12,036	Active
BEACON HILL WATER & SEWER DISTRICT	Kelso	11,969	Active
NAVAL BASE KITSAP AT BREMERTON	Silverdale	11,792	Active
CHEHALIS WATER DEPARTMENT	Chehalis	11,718	Active
HOQUIAM WATER DEPARTMENT	HOQUIAM	11,456	Active
DUVALL CITY OF	DUVALL	11,050	Active
LEAVENWORTH CITY OF	Leavenworth	11,041	Active
GRANDVIEW CITY OF	Grandview	11,010	Active
SOUTHEAST TACOMA MUTUAL WATER CO	TACOMA	10,850	Inactive
WOODLAND CITY OF	WOODLAND	10,640	Active
MANCHESTER WATER DISTRICT	MANCHESTER	10,475	Active
ORTING CITY OF	Orting	10,332	Active
LWWSD - SOUTH SHORE WATER SYSTEM	Bellingham	10,028	Active
NE SAMMAMISH SEWER & WATER DISTRICT	SAMMAMISH	9,702	Active
MOUNTAIN VIEW-EDGEWOOD WATER CO	Edgewood	9,680	Active
FAIRCHILD AIR FORCE BASE	Fairchild AFB	9,544	Active
AIRWAY HEIGHTS CITY OF	Airway	9,489	Active
CONSOLIDATED IRRIG DIST 19 SYSTEM 1	Greenacres	9,434	Active
CHELAN WATER DEPT CITY OF	Chelan	9,425	Active
OCEAN SHORES WATER DEPT	Hoquiam	9,347	Active
SELAH CITY OF	Selah	9,331	Active
BIRCH BAY WATER & SEWER DISTRICT	Birch Bay	9,046	Active
TOPPENISH WATER DEPARTMENT	Toppenish	8,950	Active
Chinook 12800 after SP280	—	8,912	Inactive
PORT ANGELES COMPOSITE	Carlsborg	8,872	Active
OTHELLO WATER DEPARTMENT	Othello	8,755	Active
UNION HILL WATER ASSOCIATION INC	Redmond	8,720	Active
EPHRATA WATER DEPARTMENT	Ephrata	8,718	Active
NORTH BEND CITY OF	North Bend	8,710	Active
STEILACOOM TOWN OF	Steilacoom	8,545	Active
SULTAN WATER DEPARTMENT	Sultan	8,424	Active
QUINCY WATER DEPARTMENT CITY OF	Quincy	8,415	Active
YAK CO - TERRACE HEIGHTS	Yakima	8,410	Active
COLLEGE PLACE WATER DEPT	College Place	8,147	Active
NORTH BEACH WATER	Ocean Park	8,093	Active
MILTON CITY OF	MILTON	8,078	Active
KALAMA CITY OF	KALAMA	8,020	Active
FIRCREST CITY OF	Fircrest	7,927	Active
PACIFIC CITY OF	Othello	7,925	Active
MODEL IRRIGATION DIST #18	Spokane	7,903	Active
TANGLEWILDE THOMPSON PLACE 600	Lacey	7,900	Active
BUCKLEY WATER	BUCKLEY	7,842	Active
STEVENS CO PUD - SUNCREST	Loon Lake	7,484	Active
PEACOCK HILL	Tacoma	7,401	Active
JBLM McChord Field	Joint Base Lewis-McChord	7,290	Active
WHITWORTH WATER DIST 2 SYSTEM 8	SPOKANE	7,130	Inactive
HOCKINSON	VANCOUVER	7,062	Inactive
LAKE CHELAN RECLAMATION DISTRICT	Manson	6,798	Active
SOUND WATER	TACOMA	6,660	Inactive
ELMA CITY OF	ELMA	6,638	Active
SALLAL WATER ASSOCIATION INC	North Bend	6,600	Active
UNION GAP WATER	Union Gap	6,433	Active
BLACK DIAMOND WATER DEPT	BLACK DIAMOND	6,407	Active
BLAINE CITY OF	BLAINE	6,319	Active
PASADENA PARK IRR DIST 17	Spokane	6,269	Active
SPO CO WATER DIST 3 SYS 4	Spokane	6,233	Active
MONTESANO CITY OF	Montesano	6,204	Active
SNOQUALMIE PASS UTILITY DISTRICT	Snoqualmie Pass	5,832	Active
ARTONDALE	Tacoma	5,828	Active
SEVEN LAKES WATER ASSOCIATION	Stanwood	5,823	Active
CASHMERE WATER DEPARTMENT	Cashmere	5,815	Active
KCWD #56	REDONDO	5,800	Inactive
BENTON CITY WATER	Benton City	5,626	Active
SPO CO WATER DIST 3 SYS 1	Spokane	5,600	Inactive
MOXEE WATER DEPARTMENT	MOXEE	5,599	Active
NORTH BAINBRIDGE WATER CO	Poulsbo	5,490	Active
DEER PARK CITY OF	Deer Park	5,435	Active
KING COUNTY WATER DISTRICT #54	Kent	5,373	Active
Mattawa City of	Mattawa	5,370	Active
GRANITE FALLS CITY OF	Granite Falls	5,349	Active
WESTPORT WATER DEPARTMENT	WESTPORT	5,346	Active
WATER DISTRICT 19	Vashon	5,335	Active
WAPATO WATERWORKS	wapato	5,255	Active
POINT EVANS	Tacoma	5,211	Active
CONNELL CITY OF	Connell	5,150	Active
GRAYS HARBOR CO WATER DIST 2	Montesano	5,112	Active
MINTERBROOK	Tacoma	5,083	Active
MEDICAL LAKE CITY OF	Medical Lake	4,982	Active
COLVILLE WATER DEPARTMENT	Colville	4,945	Active
OMAK CITY OF	Omak	4,940	Active

Showing the 200 largest of 3,900 systems on record, by population served. Browse by county above for the full list — every system has its own page, and all of them are in the sitemap.

Washington Water Systems

Counties in Washington

All community water systems in Washington