Custer County, South Dakota Water Systems

Custer County, South Dakota

17 community water systems on record — 11 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 South Dakota’s official records. Always confirm current status with South Dakota before making decisions based on this information.

Community water systems in Custer County, South Dakota

System name	City	Population served	Status
BUFFALO GAP	BUFFALO GAP	126	Active
CUSTER	CUSTER	1,919	Active
CUSTER DOC	CUSTER	25	Inactive
ELK RIDGE PARK	CUSTER	32	Inactive
FAIRBURN WATER ASSOCIATION	FAIRBURN	65	Active
HEARTLAND COUNTRY RANCHETTES	BLACK HAWK	95	Active
HERMOSA WATER USERS ASSOCIATION	HERMOSA	108	Active
HERMOSA-NEW SYSTEM	HERMOSA	400	Inactive
HERMOSA-OLD SYSTEM	HERMOSA	420	Active
NORTH HERMOSA WUD	HERMOSA	40	Active
PARAMOUNT POINT	HOT SPRINGS	40	Active
ROCK RIDGE COURT	RAPID CITY	74	Active
SOUTHERN BLACK HILLS WATER	HOT SPRINGS	492	Active
SPRING CREEK ACRES	BLACK HAWK	172	Active
THOMPSON TRAILER COURT	CUSTER	31	Inactive
UNITED ORDER OF SOUTH DAKOTA	HOT SPRINGS	75	Inactive
WESTWARD HO TRAILER COURT	CUSTER	50	Inactive