Cowlitz County, Washington Water Systems

Cowlitz County, Washington

46 community water systems on record — 31 active, 15 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 Cowlitz County, Washington

System name	City	Population served	Status
Beacon Hill East	Longview	190	Active
BEACON HILL WATER & SEWER DISTRICT	Kelso	11,969	Active
CAMELOT SUBDIVISION	Kelso	142	Active
CARROLLS WATER ASSN	Napavine	449	Active
CASTLE ROCK MUNICIPAL WATER	CASTLE ROCK	4,367	Active
CLOVER VALLEY MOBILE HOME PARK	WOODLAND	25	Inactive
COLUMBIA CREST ESTATES	Napavine	48	Active
COLUMBIA RIVERFRONT RV PARK	Woodland	233	Active
COUGAR CREST	Port Orchard	290	Active
CREEKSIDE MOBILE HOME CT	LONGVIEW	35	Inactive
DAVIS TERRACE WATER ASSN	Woodland	222	Active
EDGEWATER MOBILE ESTATES	Port Orchard	70	Active
GREEN ACRES SUBDIVISION	KELSO	25	Inactive
HANSON, ANNA WATER ASSN.	CASTLE ROCK	25	Inactive
HAZEL DELL MOBILE PARK	Woodland	24	Active
HIGH RIDGE	Port Orchard	73	Active
HILLTOP MOBILE PARK	WOODLAND	78	Inactive
KALAMA CITY OF	KALAMA	8,020	Active
KELLEY CREST	Woodland	45	Active
KELSO CITY OF	KELSO	15,775	Active
LEWIS RIVER GOLF COURSE	Kelso	300	Active
LEWIS RIVER RV PARK	Woodland	347	Active
LONGVIEW WATER DEPARTMENT	Longview	49,111	Active
MERWIN VILLAGE/PARK PPL CO	Woodland	92	Active
MULKEY MEADOWS 1	Port Orchard	93	Active
OAKS MOBILE PARK	LONGVIEW	406	Inactive
OSTRANDER WATER SYSTEM	KELSO	132	Inactive
OWL CREEK	Woodland	102	Active
PARADISE COVE RESORT & RV PARK	Castle Rock	59	Active
PETERSON FARMS	Woodland	290	Active
PLEASANT HILL TERRACE SUBDIVISION	Woodland	30	Active
RANCHO TRAILER COURT	CASTLE ROCK	36	Inactive
RYDERWOOD IMPROVEMENT & SERVICE AS	Kelso	434	Active
SANDWOOD HEIGHTS SUBDIVISION	Woodland	126	Active
SILVER FIR ESTATES	KELSO	28	Inactive
Stevens RV Park & Moorage	Oregon City	103	Inactive
STUDEBAKER HEIGHTS SUBD	CASTLE ROCK	110	Inactive
TOUTLE COMMUNITY REGIONAL WATER	Kelso	3,215	Active
TOUTLE RIVER BOYS RANCH	CASTLE ROCK	114	Inactive
TOUTLE RIVER VIEW	Kelso	45	Active
Tulip Meadows	Woodland	33	Active
VIKING VILLAGE MOBILE HOME PARK	Woodland	25	Active
WEST CASTLE ROCK WATER	KELSO	481	Inactive
WINTER LANE	CASTLE ROCK	25	Inactive
WOODBROOK WATER	KELSO	192	Inactive
WOODLAND CITY OF	WOODLAND	10,640	Active