St. Louis County, Missouri Water Systems

St. Louis County, Missouri

22 community water systems on record — 6 active, 16 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 St. Louis County, Missouri

System name	City	Population served	Status
BALLWIN RIDGE HEALTH & REHAB	WILDWOOD	90	Inactive
FLORISSANT	FLORISSANT	38,046	Inactive
KIRKWOOD PWS	KIRKWOOD	28,000	Active
MO AMERICAN EUREKA	CHESTERFIELD	11,000	Inactive
MO AMERICAN PEVELY FARMS	CHESTERFIELD	343	Active
MO AMERICAN ST LOUIS ST CHARLES COUNTIES	CHESTERFIELD	1,111,000	Active
MO EASTERN CORRECTIONAL CENTER	PACIFIC	1,100	Active
PACIFIC PWS	PACIFIC	6,000	Active
PARADISE VALLEY SUBD	HIGH RIDGE	560	Inactive
RIDGETREE TRAILS	BALWIN	30	Inactive
ST LOUIS CITY HOWARD BEND	ST LOUIS	25	Inactive
ST LOUIS CO PWSD #1	GLENCOE	1,800	Inactive
ST LOUIS CO PWSD #2	BALLWIN	530	Inactive
ST LOUIS CO WATER CO NORTH	ST LOUIS	25	Inactive
ST LOUIS CO WATER CO SOUTH	ST LOUIS	25	Inactive
ST LOUIS CO WATER CO- MERAME	ST LOUIS	25	Inactive
ST LOUIS COUNTY WATER CO-CENTR	ST LOUIS	25	Inactive
TERRISAN	CHARLOTTE	240	Active
TIMES BEACH	EUREKA	2,061	Inactive
VALLEY PARK	VALLEY PARK	3,600	Inactive
WEBSTER GROVES	WEBSTER GROVES	23,095	Inactive
WHISPERING OAKS HEALTH CARE	WILDWOOD	90	Inactive