Members
Voting Members
Class I (>200)–$1,500/year
- West River/Lyman Jones
- City of Rapid City
- City of Box Elder
- City of Spearfish
- Rapid Valley Sanitary District
- Bear Butte Water District
- Butte-Meade Sanitary District
- Southern Black Hills Water System
- Fall River Water User District
- Town of Hermosa
- City of Custer
- City of Martin
- City of Ft. Pierre
- City of New Underwood
- City of Newell
- City of Belle Fourche
Class II (<200)–$750/year
- Colonial Pine Hills
Non-Voting Members
Associate Member–$375/year
- Pennington County
- Meade County
- Elevate Rapid City
- West Dakota Water Development District
- West River Water Development District
- West River Electric Association
- Weston Heights Homeowners Association
- City of Whitewood
- Black Hawk Water Users District
Supporting Individual–$50/year
- Rep Rocky Blare
- Commissioner Gary and Bobbi Drewes
- Roger Johnsen