Monona County, Iowa Water Systems

Monona County, Iowa

10 community water systems on record — 8 active, 2 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 Iowa’s official records. Always confirm current status with Iowa before making decisions based on this information.

Community water systems in Monona County, Iowa

System name	City	Population served	Status
BLENCOE MUNICIPAL WATERWORKS	BLENCOE	224	Active
CASTANA MUNICIPAL WATER SUPPLY	CASTANA	103	Active
MAPLETON MUNICIPAL WATER PLANT	MAPLETON	1,124	Active
MOORHEAD WATER SUPPLY	MOORHEAD	189	Active
ONAWA MUNICIPAL WATER PLANT	ONAWA	2,906	Active
ROBERT MCFARLAND	WHITING	80	Inactive
RODNEY WATER SUPPLY	RODNEY	74	Inactive
SOLDIER WATER SUPPLY	SOLDIER	180	Active
UTE WATER SUPPLY	UTE	338	Active
WHITING WATER SUPPLY	WHITING	727	Active