Sioux County, Iowa Water Systems

Sioux County, Iowa

17 community water systems on record — 16 active, 1 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 Sioux County, Iowa

System name	City	Population served	Status
ALTON MUNICIPAL WATER DEPARTMENT	ALTON	1,248	Active
BOYDEN MUNICIPAL WATER SUPPLY	BOYDEN	701	Active
GRANVILLE WATER SUPPLY	GRANVILLE	310	Active
HAWARDEN WATER SUPPLY	HAWARDEN	2,700	Active
HOSPERS MUNICIPAL WATER DEPT	MARSHALLTOWN	718	Active
HULL WATER SUPPLY	HULL	2,384	Active
IRETON WATER SUPPLY	IRETON	590	Active
LEWIS AND CLARK REGIONAL WATER SYSTEM	VERMILLION	25	Active
MATLOCK WATER SUPPLY	MATLOCK	74	Active
MAURICE MUNICIPAL WATER SUPPLY	MAURICE	265	Active
ORANGE CITY MUNICIPAL WATER DEPARTMENT	ORANGE CITY	6,267	Active
ROCK VALLEY RURAL WATER DISTRICT	ROCK VALLEY	2,230	Active
ROCK VALLEY WATER SUPPLY	ROCK VALLEY	4,059	Active
RURAL WATER SYSTEM #1	HOSPERS	3,428	Active
RURAL WATER SYSTEM #1 (PLANT 1)	HOSPERS	650	Inactive
SIOUX CENTER MUNICIPAL WATER DEPARTMENT	SIOUX CENTER	8,231	Active
SOUTHERN SIOUX COUNTY RURAL WATER	IRETON	5,420	Active