The Sewer Planning and Engineering section oversees and regulates the installation of all sewers which connect or discharge to the County's Regional Sewer System. The ongoing goal of the sewer program is the prevention and elimination of septic tanks above the Spokane Valley-Rathdrum Prairie Aquifer, Spokane's sole source potable water supply.
Notice: These maps are not legal documents. Data depicted on these maps is general and schematic in nature. Please contact Environmental Services if you need specific information regarding the County's sewer system.