Warren County, Missouri Water Systems

Warren County, Missouri

31 community water systems on record — 18 active, 13 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 Missouri’s official records. Always confirm current status with Missouri before making decisions based on this information.

Community water systems in Warren County, Missouri

System name	City	Population served	Status
CEDAR GROVE VILLAGE SUBD	WARRENTON	60	Active
CLAREMONT SUBDIVISION	WRIGHT CITY	142	Inactive
COUNTRY COVE	ST LOUIS	52	Active
COUNTRY HORIZON MHP	WENTZVILLE	30	Inactive
EMMAUS HOMES INC	OFALLON	90	Inactive
GLENBROOK ESTATES	WRIGHT CITY	100	Active
GREAT OAK SUBDIVISION	WRIGHT CITY	30	Active
HIGH RIDGE MOBILE HOME PARK	WRIGHT CITY	45	Inactive
INNSBROOK	INNSBROOK	810	Active
LAKE SHERWOOD SUBD	DES PERES	1,100	Active
MAPLE RIDGE MHP	WARRENTON	140	Active
MARTHASVILLE PWS	MARTHASVILLE	1,200	Active
MO AMERICAN WARREN COUNTY WATER & SEWER	COTTLEVILLE	1,200	Active
MONTGOMERY CO PWSD #1 OWLCRE	THRUXTON	130	Inactive
MONTGOMERY CO PWSD #1 WOODRI	THRUXTON	160	Inactive
MONTGOMERY CO PWSD #1- OAKGRO	THRUXTON	110	Inactive
MONTGOMERY CO PWSD 1	WARRENTON	3,850	Active
OAKVIEW ESTATES SUBD	REDWOOD CITY	30	Inactive
PARK PLACE ESTATES	VALLEY PARK	122	Inactive
PLEASANT OAK MHP	WRIGHT CITY	150	Active
PONDEROSA TRANQL OAKS	WRIGHT CITY	100	Inactive
PRAIRIE MEADOWS ESTATES	WARRENTON	34	Inactive
SHADY OAKS	WRIGHT CITY	31	Inactive
ST CHARLES CO PWSD #2 WRIGHT CITY	O'FALLON	3,550	Active
ST CHARLES COUNTY PWSD 2 DUTZOW	O'FALLON	400	Active
ST CHARLES COUNTY PWSD 2 HICKORY TRAILS	O FALLON	50	Inactive
ST CHARLES COUNTY PWSD 2 NORTH OAK DR	O'FALLON	660	Active
ST CHARLES COUNTY PWSD 2 WARREN	O'FALLON	1,192	Active
TRUESDALE PWS	TRUESDALE	853	Active
VALLEY LAKE ESTATES	WRIGHT CITY	40	Active
WARRENTON PWS	WARRENTON	8,208	Active