Subsurface Sewage Treatment Systems


(A Natural Resources Block Grant Program)

2018 SSTS Report

Pennington County requires permits for septic systems being installed, replaced or repaired.  Contact our office for forms and information.


Subsurface Sewage Treatment Systems (SSTS) are commonly known as septic systems.  The purpose of a septic system is to treat sewage from your household.  Proper treatment of wastewater reduces health risks to humans and animals and prevents surface and groundwater contamination.

Septic System Permit Application

Man Holding Pipe

Septic Systems Video