Custer County, Idaho Water Systems

Custer County, Idaho

10 community water systems on record — 4 active, 6 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 Idaho’s official records. Always confirm current status with Idaho before making decisions based on this information.

Community water systems in Custer County, Idaho

System name	City	Population served	Status
ANTELOPE CREEK LIVING CENTER	MOORE	27	Active
CASTLE BUTTE INC	GRANDVIEW	30	Inactive
CHALLIS CITY OF	CHALLIS	900	Active
CHALLIS MUNICIPAL	CHALLIS	600	Inactive
FRENCH CREEK MOBILE HOME PARK	CLAYTON	100	Inactive
HECLA MINING COMPANY GROUSE CREEK PROJEC	STANLEY	35	Inactive
MACKAY CITY OF	MACKAY	566	Active
ROUND VALLEY WATER ASSN	CHALLIS	125	Active
SATURDAY MOUNTAIN TRAILER PARK	CLAYTON	100	Inactive
T AND J TRAILER PARK	CLAYTON	35	Inactive