U.S. water systems

EPA Region 10 Water Systems

EPA Region 10

137 community water systems on record — 83 active, 54 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 EPA Region 10’s official records. Always confirm current status with EPA Region 10 before making decisions based on this information.

All community water systems in EPA Region 10

System name	City	Population served	Status
5 CEDARS	DEMING	150	Active
ADAMS VIEW	WAPATO	790	Active
Annette	METLAKATLA	25	Inactive
ASPEN ESTATES	TULALIP	592	Inactive
B & D MOBILE COURT	TOPPENISH	45	Active
Barr	AUBURN	10	Inactive
BEACH	SEQUIM	45	Active
BIA Chemawa AG Well #4	SALEM	10	Inactive
BIA CELILO VILLAGE	WARM SPRINGS	75	Active
BIA NORTH IDAHO	LAPWAI	490	Active
BIA Warm Springs Agency	WARM SPRINGS	10	Inactive
BIA-INCHELIUM SUB-AGCY WTR STM	NESPELEM	60	Inactive
BIE CHEMAWA INDIAN SCHOOL	WASHINGTON	320	Active
BIG SKY N. SUBDIVISION	POCATELLO	300	Active
BURNS PAIUTE	BURNS	155	Active
Camp Chaparral	TOPPENISH	10	Inactive
Chehalis Tribal Center	OAKVILLE	10	Inactive
CHEHALIS TRIBAL HOUSING	OAKVILLE	620	Active
CIPV	OMAK	10	Inactive
COEUR D'ALENE SUB-AGENCY	PLUMMER	50	Active
Courville	AUBURN	10	Inactive
CTUIR PWD MISSION	PENDLETON	1,310	Active
CUYAMACA	OLYMPIA	375	Active
DELIA JIMICUM WATER DISTRICT	TULALIP	42	Active
DESMET	PLUMMER	355	Active
Disautel	Nespelem	25	Inactive
Eagle MHP LLC	Reno	30	Inactive
Eagle Tree RV	—	10	Inactive
ELWHA HEIGHTS	PORT ANGELES	216	Active
FORD-NEWHOUSE LANE	WELLPINIT	160	Active
FORT HALL	FORT HALL	2,850	Active
Fort Hall Townsite CWS	Fort Hall	2,000	Inactive
FORT SIMCOE JOB CORPS CTR	WHITE SWAN	230	Active
GEORGE LANE	SUQUAMISH	75	Active
GEORGEVILLE	TOPPENISH	70	Active
HOH TRIBE	FORKS	120	Active
Inchelium Sub-Agency	Nespelem	128	Inactive
Inchelium Townsite	Nespelem	210	Inactive
INDIAN SCHOOL DIST #512	Fort Hall	180	Inactive
INDIANOLA	SUQUAMISH	78	Active
JOHN SAM LAKE (TULALIP WATER DIST #2)	TULALIP	168	Inactive
Kahneeta	WARM SPRINGS	24	Inactive
KALISPEL	USK	330	Active
KAMIAH	LAPWAI	200	Active
Kamilche/Tribal Housing	Shelton	385	Inactive
KELLER	NESPELEM	340	Active
KWONESUM	LA CONNER	42	Active
Little Creek Casino/Trading Post	Shelton	800	Inactive
LOWER ELWHA VALLEY	PORT ANGELES	511	Active
Lucky 7 Trailer court	PENDLETON	10	Inactive
LUMMI TRIBAL WATER DISTRICT	BELLINGHAM	3,699	Active
LUMMI WATER DISTRICT #1	BELLINGHAM	400	Inactive
LUMMI WATER DISTRICT #3	BELLINGHAM	65	Inactive
MADISON ESTATES	TULALIP	86	Active
MAKAH NEAH BAY	NEAH BAY	1,300	Active
Makah-AFS Base & Housing	NEAH BAY	10	Inactive
Makah-AFS Peak WTP	NEAH BAY	10	Inactive
Makah-Trailer Court	NEAH BAY	10	Inactive
MALOTT	NESPELEM	95	Active
MARTHA BOARDMAN	WELLPINIT	295	Active
MCCOY LAKE	WELLPINIT	325	Active
Meteor HUD CWS	Nespelem	27	Inactive
METLAKATLA	METLAKATLA	1,575	Active
MISSION HIGHLANDS	TULALIP	210	Inactive
Mt. Tolman Admin.	KELLER	10	Inactive
Mt. Tolman Training Center	KELLER	10	Inactive
MT. VISTA - DUNGENESS GOLF COURSE	SEQUIM	517	Active
MUCKLESHOOT	AUBURN	3,250	Active
NESPELEM AGENCY	NESPELEM	445	Active
NISQUALLY-LESCHI & WEST NISQUALLY	OLYMPIA	3,200	Active
NORTH LAPWAI	LAPWAI	110	Active
OAK FLATS	SILETZ	140	Active
OLYMPIC PARK TRAILER COURT	OLYMPIA	169	Active
OMAK HUD	NESPELEM	380	Active
Pacheco	AUBURN	10	Inactive
PARKER	TOPPENISH	300	Active
PASCHAL SHERMAN INDIAN SCHOOL	WASHINGTON	220	Active
PLUMMER TRIBAL COMMUNITY	PLUMMER	515	Active
PORT GAMBLE SKLALLAM	KINGSTON	1,509	Active
PORT GAMBLE-LOWER-CWS	KINGSTON	373	Inactive
PORT SUSAN CAMP CLUB #1	STANWOOD	1,500	Active
PORT SUSAN CAMP CLUB #2	STANWOOD	1,000	Active
PORT SUSAN CAMP CLUB #3	STANWOOD	1,000	Active
QUEETS	TAHOLAH	200	Active
QUI NAI ELT VILLAGE	TAHOLAH	207	Active
Qui/Nai/Elt Village, Moclips Est.	—	35	Inactive
QUILEUTE WATER SYSTEM	LA PUSH	885	Active
QUINAULT BEACH RESORT	OCEAN SHORES	1,450	Inactive
Rebecca Lake	Nespelem	35	Inactive
RED RIVER/LAKE TERRELL	BELLINGHAM	80	Inactive
RESERVATION ROAD	WELLPINIT	110	Active
Revey Ballew	BELLINGHAM	10	Inactive
ROCKY RIVER ROAD COMMUNITY SITE	NESPELEM	260	Active
Ross	AUBURN	10	Inactive
Roy Hull	—	10	Inactive
RUTSATZ ROAD	DEMING	150	Active
SACKMAN	SUQUAMISH	500	Active
Salmon Bake PWS	NORTH BEND	10	Inactive
SANTIAGO WATER ASSOCIATION	TAHOLAH	95	Active
SAUK-SUIATTLE	DARRINGTON	80	Active
SEATONS GROVE	NESPELEM	115	Active
Seekseequa CWS	—	10	Inactive
SHOALWATER BAY	TOKELAND	198	Active
SIDWALTER	WARM SPRINGS	130	Active
SILETZ	SILETZ	475	Active
SIMNASHO SCHOOLIE	WARM SPRINGS	350	Active
SKOKOMISH	SKOKOMISH NATION	1,150	Active
SOUTH LAPWAI	LAPWAI	235	Active
SOUTH WHITE SWAN	TOPPENISH	90	Inactive
Sprague River	Sprague River	120	Inactive
SQUAXIN CONSOLIDATED	SHELTON	1,500	Active
Squaxin Island - Kamilche	SHELTON	10	Inactive
Squaxin Island KamilcheTrading Post	—	10	Inactive
Squaxin Island Tribal Center	SHELTON	10	Inactive
SULWHANON	DEMING	150	Active
SUQUAMISH TRIBAL CENTER	SUQUAMISH	110	Inactive
Sweetwater/field 19	LAPWAI	10	Inactive
SWINOMISH	LA CONNER	1,212	Active
Swinomish North Satelite	—	10	Inactive
TAHOLAH	TAHOLAH	1,600	Active
Tribal Center	SHELTON	10	Inactive
TRIBAL COMPLEX	TOPPENISH	907	Active
TULALIP BAY WATER DIST #1	TULALIP	5,968	Active
TULARE ESTATES	TULALIP	38	Active
TWIN LAKES HUD	NESPELEM	42	Active
TWO RIVERS RESORT	WELLPINIT	480	Active
UPPER SKAGIT	SEDRO WOOLLEY	365	Active
VOSPER PLACE SUBDIVISION	OAKVILLE	68	Active
Waconi	WHITE SWAN	10	Inactive
WARM SPRINGS TREATMENT PLANT	WARM SPRINGS	1,575	Inactive
WARM SPRINGS WATER TREATMENT PLANT	WARM SPRINGS	3,800	Active
WEE WUN	SUQUAMISH	75	Active
WELLPINIT	WELLPINIT	525	Active
WHISPERING CEDARS	DEMING	25	Active
WHITE SWAN	TOPPENISH	900	Active
White Swan (INACTIVE)	TOPPENISH	25	Inactive
WOLF POINT	WAPATO	125	Active