Columbia County, Oregon Water Systems

Columbia County, Oregon

64 community water systems on record — 35 active, 29 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 Columbia County, Oregon

System name	City	Population served	Status
ALDER CREEK-SLEEPY HOLLOW -OLD	PORTLAND	100	Inactive
BERNDT CREEK WATER CORP	VERNONIA	45	Active
CASCADE EAST COMM WTR SYS	OREGON CITY	101	Inactive
CEDAR TREE MOBILE HOME PARK	SCAPPOOSE	50	Active
CITY OF RAINIER	RAINIER	1,932	Active
CLACKAMAS COUNTY HSNG AUTH	OREGON CITY	350	Inactive
CLATSKANIE, CITY OF	CLATSKANIE	2,188	Active
COLUMBIA ACRES WATER ASSOC	SCAPPOOSE	110	Active
COLUMBIA CITY MUN WATERWORKS	COLUMBIA CITY	1,995	Active
COLUMBIA HILLS HOA	SCAPPOOSE	84	Active
COUNTRY VILLA MOBILE ESTATES	TIGARD	90	Active
CULBERTSON'S MOBILODGE	RAINIER	24	Inactive
DEER ISLAND HEIGHTS WS	ST HELENS	60	Active
DEER ISLAND VILLAGE MHP	SCAPPOOSE	100	Active
DEER ISLAND WATERWORKS	ST HELENS	90	Active
DEER VIEW COOPERATIVE	RAINIER	90	Active
DIKESIDE MOORAGE	SCAPPOOSE	45	Active
FERN VIEW MOBILE HOME COURT	SCAPPOOSE	70	Inactive
FISHHAWK LAKE RESERVE AND COMMUNITY	BIRKENFELD	350	Active
GOBLE WATER ASSOCIATION	RAINIER	85	Active
GREEN MEADOWS MHP 1	SCAPPOOSE	24	Inactive
HAMLET WATER ASSOCIATION	BORING	30	Inactive
HILAND WC - BARGER	ST HELENS	20	Inactive
HOGG HEAVEN MHP	BEAVERTON	40	Active
HOLCOMB-OUTLOOK WATER DIST.	OREGON CITY	992	Inactive
HOODVALE WTR USERS,INC	PORTLAND	50	Inactive
J & M MOBILE HOME PARK	RAINIER	45	Active
JUNIPER ACRES	LAKE OSWEGO	28	Inactive
LAUREL RIDGE MHP	SCAPPOOSE	70	Active
LAURELWOOD WATER SYSTEM	RAINIER	58	Inactive
LOST CREEK HEIGHTS WTR ASSOC	CLATSKANIE	100	Active
MAPLE TERRACE MOBILE HOME PARK	HAPPY VALLEY	70	Active
MARSHLAND WATER ASSOCIATION	CLATSKANIE	70	Active
MARYHURST WS	MARYLHURST	150	Inactive
MCCUDDYS LANDING	PORTLAND	70	Active
MCNULTY WATER PUD	ST. HELENS	2,500	Active
MIDLAND WATER ASSOCIATION	CLATSKANIE	160	Active
MT SHADOW ESTATES %W TAYLOR	GRESHAM	75	Inactive
OAK ACRES MOBILE PARK	CLACKAMAS	238	Inactive
OREGON CITY - HIGH MTN.	OREGON CITY	8,500	Inactive
OREGON CITY-MIXTURE	OREGON CITY	6,000	Inactive
PARADISE MOORAGE	SCAPPOOSE	90	Active
PARKLAND TERR MOBILE HOME CT	MILWAUKIE	100	Inactive
PIONEER ACRES	SANDY	26	Inactive
PRESCOTT, CITY OF	RAINIER	70	Active
QUINCY WA ILMORI	CLATSKANIE	34	Inactive
QUINCY WATER ASSOCIATION	CLATSKANIE	300	Active
REDLAND WATER DISTRICT	CLACKAMAS	500	Inactive
RIVERS EDGE MHP LLC	MAMMOTH LAKE	23	Inactive
SCAPPOOSE, CITY OF	SCAPPOOSE	8,710	Active
SHAMROCK APTS %R RODGERS	SANDY	21	Inactive
ST HELENS, CITY OF	ST HELENS	13,410	Active
STANLEY WATER DISTRICT	MILWAUKIE	1,524	Inactive
SWEDETOWN WATER ASSOC	CLATSKANIE	40	Active
TAMARACK MOBILE HOME PARK	SCAPPOOSE	80	Active
TROUT CREEK WATER ASSOCIATION	MOLALLA	150	Inactive
VALLEY VIEW HTS WS-%NEAL YOUNG	OREGON CITY	22	Inactive
VEIDA TRAILER PARK	PORTLAND	60	Inactive
VERNONIA, CITY OF	VERNONIA	2,100	Active
WARREN WATER ASSOCIATION	ST HELENS	2,050	Active
WEST RAINIER WATER ASSOCIATION	RAINIER	19	Inactive
WESTERN HILLS MH ESTATES	RAINIER	375	Active
WESTLAND WATER ASSOCIATION	CLATSKANIE	25	Active
WESTVIEW MANOR	MILWAUKIE	150	Inactive