A county may adopt ordinances for the purpose of protecting public groundwater supplies from pollution. The ordinances shall be consistent with the wellhead protection program guidelines developed by the department pursuant to § 34A-3A-17, and may include ordinances to establish wellhead protection areas; to zone for the purpose of protecting such areas from pollution; to monitor and regulate activities and sources of potential or actual pollution within the areas; and to provide for the containment and cleanup of pollution or other remedial action within the areas. A county may enter into agreements with the state and with other political subdivisions to implement and enforce a wellhead protection program.
SDCL 7-18-20