King County, Washington Water Systems

King County, Washington

295 community water systems on record — 156 active, 139 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 July 4, 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.

Community water systems in King County, Washington

System name	City	Population served	Status
165th Ave Water System	Maple Valley	24	Active
85 Acres	Sun Valley	55	Active
ALEXANDERS RESORT	SNOQUALMIE	2,878	Inactive
ALGONA WATER DEPT	Algona	3,300	Active
ALPENTAL SKI AREA	CLE ELUM	1,288	Inactive
ALPINE MOBILE MANOR	Issaquah	45	Active
ALPINE WATER ASSOCIATION	Falls City	58	Active
AMES LAKE WATER ASSOC INC	Redmond	3,224	Active
AQUA VISTA ESTATES	KENT	56	Inactive
ARROWHEAD PT COMM	OLYMPIA	25	Inactive
AUBURN ACADEMY WS #2	OLYMPIA	25	Inactive
Auburn City of	Auburn	107,655	Active
Auburn Park Community LLC	Port Orchard	202	Active
AVON VILLA TRAILER PARK	REDMOND	255	Inactive
AVONDALE PARK WATER SYSTEM	REDMOND	230	Inactive
BACHELOR WATER SYSTEM	VASHON	33	Inactive
BARING WATER SYSTEM	BARING	30	Inactive
BARRY, GENE - REDMOND WATER SYSTEM	REDMOND	30	Inactive
BASS LAKE #3	BELLEVUE	27	Inactive
BASS LAKE VIEW TRACTS	ENUMCLAW	25	Inactive
BEAUX ARTS WATER DEPARTMENT	BEAUX ARTS	345	Active
BELLEVUE CITY OF	Bellevue	321,349	Active
BEULAH PARK COMMUNITY	Port Orchard	106	Active
BILLINGTON	Maple Valley	34	Active
BILOXI COMMUNITY	VASHON	28	Inactive
BLACK DIAMOND WATER DEPT	BLACK DIAMOND	6,407	Active
BLACKWATER CO-OP	RAVENSDALE	30	Inactive
BOTHELL WATER CITY OF	Bothell	33,643	Active
BRAUNWOOD ESTATES	Auburn	35	Active
BREWER ADDITION	RENTON	36	Inactive
BRIDLE TRAILS SOUTH WATER SYSTEM	Ravensdale	42	Active
BRYANT SUPPLY	TACOMA	33	Inactive
BURKE WATER SYSTEM	KENT	10	Inactive
BURTON WATER COOPERATIVE	Vashon	964	Active
CAMPTON COMMUNITY WELL	REDMOND	31	Inactive
CARNATION WATER SYSTEM CITY OF	Mount Vernon	2,400	Active
CASCADE VIEW WATER DIST.	REDMOND	1,245	Inactive
CEDAR GLEN ESTATES	ENUMCLAW	90	Inactive
CEDAR GROVE MOBILE HOME PARK	Covington	122	Inactive
CEDAR HEIGHTS WATER DIST	ISSAQUAH	48	Inactive
CEDAR MOUNTAIN HOMEOWNERS ASSOC	Port Orchard	106	Active
CEDAR RIVER WATER & SEWER DISTRICT	Maple Valley	28,671	Active
CHAMONIX VILLAGE	Baring	53	Active
CHEROKEE BAY COMMUNITY CLUB INC	Port Orchard	2,400	Active
CHERRY CREEK	Sun Valley	138	Active
COAL CREEK UTILITY DISTRICT	Newcastle	15,989	Active
COLLEGE PLACE MOBILE HOME PARK	AUBURN	375	Inactive
COLMAN C WATER	ISSAQUALL	25	Inactive
COUGAR GLEN	EDMONDS	25	Inactive
COVELLO ADDITION	KENT	25	Inactive
COVINGTON WATER DISTRICT	Kent	56,172	Active
CRESTVIEW TRACTS #3	Auburn	77	Active
CRESTVIEW WATER SUPPLY	KENT	175	Inactive
CRESTVIEW WEST WATER SYSTEM	KENT	147	Active
CRISTALINA	Tacoma	225	Active
CUMBERLAND COOP WATER SYSTEM	Port Orchard	210	Active
DAWNBREAKER WATER ASSOCIATION	Port Orchard	168	Active
DERBYSHIRE SCENIC ACRES	Port Orchard	156	Active
DIAMOND SPRINGS WATER ASSOCIATION	Port Orchard	138	Active
DILWORTH PT COMMUNITY	VASHON	88	Inactive
DOCKTON WATER ASSOCIATION	VASHON	992	Active
DORRE DON WATER SYSTEM	MAPLE VALLEY	225	Inactive
DUVALL CITY OF	DUVALL	11,050	Active
EASTHILL COMMUNITY WELL CO	KENT	800	Inactive
ECHO GLEN CHILDRENS CENTER	Snoqualmie	430	Active
ECHO GLEN WATER SYSTEM	SILVERDALE	105	Active
EDGEHILL WATER ASSN	Maple Valley	109	Active
ELDERWOOD WATER ASSOCIATION	Port Orchard	52	Active
ENLOE WATER SYSTEM	DUVALL	38	Inactive
ENUMCLAW GOLF COURSE	ENUMCLAW	829	Inactive
ENUMCLAW WATER DEPARTMENT	Enumclaw	23,276	Active
ERICKSONS SUBURBAN ESTATES	KENT	83	Inactive
ERWIN ESTATES	KENT	48	Inactive
EVERGREEN HEIGHTS WATER COOP ASSOC	ISSAQUAH	50	Inactive
EVERGREEN SKY RANCH COMMUNITY WTR	Auburn	43	Active
EVERGREEN WATER & IMPROVEMENT ASSN	Port Orchard	150	Active
FALL CITY WATER DIST. (PLUM CREEK)	Fall City	59	Active
FALL CITY WATER DIST. (RUTH)	Fall City	49	Active
FALL CITY WATER DIST. #127	Fall City	2,987	Active
FALL CITY WATER DIST.(SPRING HILL)	Fall City	57	Active
FARRELL L. E.	Port Orchard	32	Active
FIRCREST SCHOOL / DSHS	SEATTLE	800	Inactive
FOOTHILLS WATER ASSOCIATION	Port Orchard	271	Active
FOREST GROVE HILLS	Port Orchard	50	Active
FORT MUCKLESHOOT TRAILER PARK	AUBURN	120	Inactive
FOSS RIVER GROVE	OLYMPIA	25	Inactive
FOUR CREEKS RANCH WATER SYSTEM	Port Orchard	150	Active
FOUR LAKES	Lake Forest Park	212	Active
Gold Beach Water Company	Vashon	390	Active
GOULD WATER SUPPLY	HOBART	30	Inactive
Grandview Condominiums	Port Orchard	679	Active
GREEN ACRES WATER ASSOCIATION	Port Orchard	44	Active
GROTTO WATER ASSOCIATION	SKYKOMISH	36	Active
HARMAN HEIGHTS WATER ASSOC	NORTH BEND	30	Inactive
HARTMAN WATER	KENT	25	Inactive
HAZELWOOD HEIGHTS	Auburn	85	Active
HEDLUND DUPLEXES	SEATTLE	42	Inactive
HEIGHTS WATER	Vashon	2,051	Active
Highlands Utility District	Shoreline	275	Active
HIGHLINE WATER DISTRICT	Kent	100,170	Active
HOBART WATER SUPPLY	HOBART	36	Inactive
INDEPENDENT WATER CO., INC.	RENTON	90	Inactive
INGLEWOOD PARK WATER CO.	KIRKLAND	145	Inactive
ISSAQUAH VALLEY WATER ASSN #1	Issaquah	80	Active
ISSAQUAH WATER SYSTEM	ISSAQUAH	43,584	Active
JEFFERSON POINT	POULSBO	39	Inactive
KANASKAT WATER SUPPLY	PALMER	27	Inactive
KANGLEY	OLYMPIA	25	Inactive
KANGLEY	RAVENSDALE	60	Inactive
KCWD #1	BELLEVUE	615	Inactive
KCWD #121	ISSAQUAH	1,360	Inactive
KCWD #38	OLYMPIA	25	Inactive
KCWD #4	BURIEN	2,150	Inactive
KCWD #43, RIVERTON HGTS	OLYMPIA	25	Inactive
KCWD #56	REDONDO	5,800	Inactive
KCWD #61, WHITE CENTER	OLYMPIA	25	Inactive
KCWD #69, SKYWAY	SEATTLE	930	Inactive
KCWD #77	SEATTLE	2,135	Inactive
KCWD #78	RENTON	90	Inactive
KCWD #87, THOMAS	KENT	322	Inactive
KCWD #88	SEATTLE	540	Inactive
KENT WATER DEPARTMENT	Kent	166,421	Active
KING COUNTY WATER DISTRICT #1-YARRO	YARROW POINT	517	Inactive
KING COUNTY WATER DISTRICT #117	Port Orchard	95	Active
KING COUNTY WATER DISTRICT #123	Port Orchard	242	Active
KING COUNTY WATER DISTRICT #125	SEATTLE	21,904	Active
KING COUNTY WATER DISTRICT #17	BELLEVUE	350	Inactive
KING COUNTY WATER DISTRICT #20	Seattle	38,974	Active
KING COUNTY WATER DISTRICT #45	Seattle	4,398	Inactive
KING COUNTY WATER DISTRICT #49	Burien	16,065	Active
KING COUNTY WATER DISTRICT #54	Des Moines	5,373	Active
KING COUNTY WATER DISTRICT #57	SEATTLE	210	Inactive
KING COUNTY WATER DISTRICT #85	SEAHURST	1,430	Inactive
KING COUNTY WATER DISTRICT #94	MAPLE VALLEY	375	Inactive
KING COUNTY WATER DISTRICT 119	Duvall	3,800	Active
KING COUNTY WATER DISTRICT NO 90	Renton	20,100	Active
KIRKLAND CITY OF	Kirkland	69,243	Active
KRAIN WATER SUPPLY	ENUMCLAW	161	Inactive
L MCDONALD COMM ASSN	RENTON	217	Inactive
Lake Alice Water Association	Fall City	90	Active
LAKE FOREST PARK WATER DISTRICT	Lake Forest Park	3,171	Active
LAKE MARGARET WATER SYSTEM	Carnation	406	Active
LAKE MERIDIAN ESTATES (MHP)	Kent	154	Active
Lake Meridian Water District	Kent	24,231	Active
LAKE RETREAT CAMP & CONF CENTER	RAVENSDALE	404	Active
LAKE RETREAT FIRS #2 WATER ASSOC.	Ravensdale	38	Active
LAKE RETREAT RIDGE	RAVENSDALE	30	Inactive
LAKE TUCK	Tacoma	143	Active
LAKE WILDERNESS SHORE ACRES ESTATE	Renton	75	Active
LAKEHAVEN WATER AND SEWER DISTRICT	FEDERAL WAY	148,809	Active
LAKERIDGE WATER DISTRICT	SEATTLE	2,000	Inactive
LESTER WATER SUPPLY	LESTER	50	Inactive
LOCLOMAN SUBDIVISION	Kent	174	Active
LOGANDALE WATER ASSOC INC.	Auburn	42	Active
LUANA WATER ASSN.	Port Orchard	74	Active
LUND,J.R. ADDITION WATER SYSTEM	RENTON	30	Inactive
MAPLE VISTA	Lake Forest Park	57	Active
MAPLEWOOD ADDITION WATER COOP	Renton	435	Active
MARIANI WATER SYSTEM INC	Black Diamond	138	Active
MARINE ESTATES MUTUAL WATER ASSN	Vashion Island	38	Active
MARTINS MOBILE VILLA	REDMOND	102	Inactive
MASONIC RETIREMENT CENTER	SEATTLE	292	Inactive
MAURY MUTUAL WATER CO	Vashon	233	Active
MAYFAIR CLASS 2 WS	DUVALL	30	Inactive
Mazama Woods	Port Orchard	45	Active
MERCER CREST WATER ASSOC	MERCER IS	795	Inactive
MERCER ISLAND CITY OF	Mercer Island	31,057	Active
MERIDIAN MEADOWS	KENT	117	Inactive
MINT GROVE	ISSAQUAH	40	Inactive
MIRRORMONT	Tacoma	2,083	Active
MOBILE HOME WONDERLAND	RENTON	160	Inactive
MONOLDON WATER SYSTEM	ISSAQUAH	86	Inactive
MORRIS,WATER	MAPLE VALLEY	15	Inactive
MORTON MANOR #2	KENT	36	Inactive
MOUNT SI MOBILE HOME ESTATES	North Bend	200	Active
MOUNTAIN VIEW WATER DISTRICT INC	Kent	91	Active
NE SAMMAMISH SEWER & WATER DISTRICT	Sammamish	8,516	Active
NEEDLE CREEK WATER SYSTEM	VASHON	50	Active
NEW ARCADIA WATER SYSTEM	Ravensdale	40	Active
Newaukum Water System	Port Orchard	62	Active
NOB HILL WATER COMPANY	MAPLE VALLEY	90	Inactive
NOBLE WOODS WATER SYSTEM	Lake Forest Park	37	Active
NORMANDY PARK WATER COMPANY	SEATTLE	1,985	Inactive
NORTH BEND CITY OF	North Bend	7,228	Active
NORTH CEDARHURST WATER SYSTEM	VASHON	25	Inactive
North City Water District	Shoreline	32,847	Active
NORTHSHORE UTILITY DISTRICT	Kenmore	99,789	Active
NORWEST MOBILE HOME PARK	North Bend	49	Active
NOVAK SUPPLY	KENT	50	Inactive
ORCHARD GROVE	Port Orchard	86	Active
OVERDALE WATER ASSOCIATION	Issaquah	476	Inactive
PACIFIC CITY OF	Buckley	7,925	Active
PALMER-ISSAQUAH WATER SYSTEM	RENTON	12	Inactive
PANTHER L COMM SUPP	OLYMPIA	60	Inactive
PANTHER LAKE COMMUNITY SOUTH	KENT	57	Inactive
PIERCE SUBDIVISION	MAPLE VALLEY	39	Inactive
PLAT OF HEATHERCREST	SEATTLE	168	Inactive
PLEMMONS WATER SUPPLY	KENT	105	Inactive
PRESTON INDUSTRIAL PARK WATER ASSN	Port Orchard	930	Active
QUARTERMASTER HEIGHTS WATER ASSN	Vashon	70	Active
RAKWANNA PARK WATER SYS INC	WOODINVILLE	90	Active
RAVENSDALE MOBILE HOME PARK	Ravensdale	34	Active
RAVENSDALE WATER SUPPLY	Renton	389	Active
REDMOND MHP	REDMOND	195	Inactive
REDMOND MOBILE MANOR	REDMOND	250	Inactive
REDMOND WATER SYSTEM CITY OF	Redmond	163,335	Active
REED RANCH ROAD WATER	Maple Valley	36	Active
REMOLIF ADDITION	—	76	Active
RENTON CITY OF	Renton	108,091	Active
RIVER BEND HOA	Snoqualmie	1,603	Active
RIVERBEND MOBILE HOME PARK	PORT ORCHARD	343	Active
RIVERWOOD PARK COMMUNITY CLUB	Port Orchard	109	Active
ROCKY ACRES WATER SYSTEM	Port Orchard	61	Active
ROSE HILL WATER DISTRICT	KIRKLAND	18,300	Inactive
RUMBOLZ SUNSET WATER SYSTEM	Snoqualmie	106	Active
SACKWAR WATER SYSTEM	BURLINGAME	13	Inactive
SALLAL WATER ASSOCIATION INC	North Bend	6,600	Active
SAMMAMISH PLATEAU WATER & SEWER	Sammamish	79,362	Active
SAMMAMISH VIEW PARK	REDMOND	64	Inactive
SANDY BEACH COMMUNITY WATER SYSTEM	VASHON_ISLAND	30	Inactive
SANDY SHORES WATER ASSOCIATION	DOCKTON	70	Inactive
SAWYERWOOD ESTATES WATER SYSTEM	Port Orchard	46	Active
SAWYERWOOD WATER SYSTEM	Black Diamond	32	Active
SCHISSL WATER SYSTEM	OLYMPIA	25	Inactive
SE 260TH WATER ASSOCIATION	MAPLE VALLEY	27	Inactive
SEATTLE PUBLIC UTILITIES	Seattle	1,161,961	Active
SELLECK WATER SUPPLY	RAVENSDALE	207	Inactive
SHAWNEE HILL CONDOMINIUM WS	Vashon	44	Active
SHAWNEE WATER SYSTEM	VASHON	53	Inactive
SHOAL WATER SYSTEM	ENUMCLAW	33	Inactive
SHOREWOOD APARTMENTS	MERCER ISLAND	1,600	Inactive
SHORTRIDGE PARK	KENT	48	Inactive
SISTRUNK, R	ENUMCLAW	12	Inactive
SKYKOMISH WATER DEPT	Skykomish	324	Active
SKYLAND PARK WATER ASSOCIATION	Port Orchard	47	Active
SKYLARK VILLAGE	AUBURN	282	Inactive
SKYLARK VILLAGE MHP	AUBURN	350	Inactive
SKYLINE-DUVALL	BELLEVUE	30	Inactive
SKYWAY WATER & SEWER	Seattle	12,036	Active
SKYWAY WATER & SEWER DISTRICT	SEATTLE	4,000	Inactive
SNOQUALMIE FALLS GOLF	FALL CITY	433	Inactive
SNOQUALMIE PASS UTILITY DISTRICT	Snoqualmie Pass	5,805	Active
SNOQUALMIE WATER	SNOQUALIME	15,848	Active
SOOS CREEK WATER & SEWER DISTRICT	Renton	64,534	Active
SOUTH AUBURN WATER ASSOCIATION	Black Diamond	212	Active
SPRING BEACH	BURTON	25	Inactive
SPRING GLEN ASSOCIATION	Fall City	245	Active
SPRING GLEN MOBILE HOME PARK	Mercer Island	96	Active
STARCREST ADDITION	KENT	75	Inactive
STONE CREEK ESTATES WATER ASSN.	Kent	62	Active
SUGARLOAF WATER SYSTEM	Kent	468	Active
SUNNYSLOPE MUTUAL WATER SYSTEM	Vashion Island	85	Active
SUNSET PARK WATER CO	Port Orchard	21	Active
SYLVAN BEACH WATER SYSTEM	VASHON	42	Inactive
TAHOMA SCHOOL CENTRAL OFFICE	MAPLE VALLEY	25	Inactive
TERRAWOOD WATER	MAPLE VALLEY	114	Inactive
THE MEADOWS WATER SYSTEM LLC	KIRKLAND	127	Active
THOMAS WATER SUPPLY	KENT	33	Inactive
TIGER MOUNTAIN ESTATES W.S.	ISSAQUAH	25	Inactive
TIGER MTN ESTATES	ISSAQUAH	36	Inactive
TIGER MTN TRACTS	Issaquah	30	Active
TIMBERLANE VILLAGE WATER	Baring	51	Active
TOKUL CREEK COMMUNITY	Snoqualmie	34	Active
TRAILS END	Port Orchard	117	Active
TUKWILA WATER DEPARTMENT	Tukwila	36,298	Active
TUKWILA, CITY OF DUWAMISH	TUKWILA	1,200	Inactive
TWENTY-THREE 800 TIGER MOUNTAIN	Port Orchard	129	Active
TWIN CEDARS	ISSAQUAH	48	Inactive
UNION HILL WATER ASSOCIATION INC	Redmond	8,720	Active
UPPER PRESTON WATER ASSN	Falls City	150	Active
VALLEY VIEW ESTATES WATER ASSO	MAPLE VALLEY	30	Inactive
Valley View Mobile Park LLC	Port Orchard	126	Active
VANDEL,LARRY WATER SYSTEM	WOODINVILLE	7	Inactive
VASHON ISLAND WATER & ROAD ASS	BELLEVUE	800	Inactive
WALCZAK 620	Lacey	256	Active
WALTER WALKER WATER WORKS	Tacoma	42	Active
WATER DISTRICT 19	Vashon	3,723	Active
WATKINS PARK	MAPLE VALLEY	30	Inactive
WEBER POINT	REDMOND	84	Inactive
WEBSTER LAKE ESTATES WATER SYSTEM	RENTON	147	Inactive
WELCHS WATER ASSOCIATION	Port Orchard	69	Active
WELLS WATER ASSOCIATION	Auburn	39	Active
WEONA BEACH	BELLEVUE	16	Inactive
WESLEY GARDENS	DES MOINES	350	Inactive
WESTSIDE WATER ASSN	Vashion Island	562	Active
WHITE RIVER WATER CO	ENUMCLAW	240	Inactive
WILDERNESS RIM ASSOCIATION	Falls City	1,867	Active
WILDERNESS RIM MAINTENANC	OLYMPIA	25	Inactive
WILDERNESS VILLAGE	MAPLE VALLEY	60	Inactive
WILSONS COTTAGES W D	RENTON	280	Inactive
WOLSCHLAGEL #1	SEATTLE	48	Inactive
WOMISH, INC	VASHON	62	Inactive
WOODINVILLE WATER DISTRICT	Woodinville	66,699	Active
WOODLAND HEIGHTS	Snohomish	108	Active
Y BAR S WATER COMPANY INC	Seattle	240	Inactive