Umatilla County, Oregon Water Systems

Umatilla County, Oregon

46 community water systems on record — 34 active, 12 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 Oregon’s official records. Always confirm current status with Oregon before making decisions based on this information.

Community water systems in Umatilla County, Oregon

System name	City	Population served	Status
ADAMS WATER DEPT, CITY OF	ADAMS	400	Active
ATHENA, CITY OF	ATHENA	1,238	Active
CHARLES TRACTS WATER COMPANY	HERMISTON	290	Active
CHART SUBDIVISION	HERMISTON	125	Active
COUNTRY SQUIRE ESTATES	BEAVERTON	150	Active
DEGROFFS MOBILE VILLAGE	HERMISTON	100	Inactive
DESIRE FOR HEALING, INC	PENDLETON	33	Active
ECHO, CITY OF	ECHO	632	Active
FORDICE WATER SYSTEM	HERMISTON	22	Inactive
FRONTIER MOBILE HOME PARK	SALEM	50	Inactive
GREEN ACRES MHP - UMATILLA CO	WEST LINN	200	Active
GREEN ACRES MOBILE PARK	MILTON-FREEWATER	80	Inactive
GREEN MEADOWS WTR CORPORATION	PENDLETON	75	Active
HALLS TRAILER COURT	PENDLETON	60	Active
HAT ROCK MOBILE COURT	BEAVERTON	60	Active
HAT ROCK WATER COMPANY	HERMISTON	150	Active
HELIX, CITY OF	HELIX	190	Active
HERITAGE IMPROVEMENT DISTRICT	PENDLETON	125	Active
HERMISTON, CITY OF	HERMISTON	20,000	Active
LOCUST MOBILE VILLAGE	MILTON-FREEWATER	60	Inactive
LUCKY SEVEN TRAILER COURT	PENDLETON	53	Inactive
MCKAY ACRES IMPROVEMENT DIST	PENDLETON	75	Active
MEMORY LANE MHP %MIKE WINKS	PENDLETON	20	Inactive
MILL CREEK GLEN	WALLA WALLA	16	Inactive
MILTON-FREEWATER, CITY OF	MILTON-FREEWATER	7,145	Active
NORTH HILL WATER CORPORATION	HERMISTON	100	Active
PENDLETON, CITY OF	PENDLETON	16,996	Active
PILOT ROCK, CITY OF	PILOT ROCK	1,326	Active
POWER CITY WATER CO-OP	UMATILLA	70	Active
RIETH WATER DISTRICT	PENDLETON	150	Active
SHADY REST MOBILE COURT	HERMISTON	110	Active
STANFIELD HUTTERIAN	STANFIELD	80	Active
STANFIELD, CITY OF	STANFIELD	2,115	Active
STEWARTS ADDITION	PENDLETON	50	Active
SUNDALE WATER CO-OP	PENDLETON	150	Inactive
SUNRIDGE WATER INC	VANCOUVER	200	Active
TIERRA LINDA ESTATES	SPRING	450	Active
UKIAH, CITY OF	UKIAH	235	Active
UMATILLA, CITY OF	UMATILLA	8,256	Active
UNION PACIFIC RR-WTR SVC DEPT	HERMISTON	300	Inactive
VILLADOM MOBILE HOME PARK	LAFAYETTE	115	Active
VINCENT WATER COMPANY	MILTON-FREEWATER	90	Active
VISTA HOME PARK	HERMISTON	300	Active
W W WATER SYSTEM-GREENMEADOW W	PENDLETON	150	Inactive
WESTLAND ESTATES WATER SYSTEM	HERMISTON	60	Inactive
WESTON, CITY OF	WESTON	714	Active