Illicit Discharge Elimination Plan (IDEP)


The Illicit Discharge Elimination Plan (IDEP)’s specific goal is to eliminate any unauthorized discharges, as defined in the NPDES storm water permit, from the separate storm sewer systems of the communities, municipalities, school districts, university or agencies that are cooperating in the Saginaw Area Storm Water Authority (SASWA). The SASWA is depending on the cooperation of its membership and the Michigan Department of Environmental Quality (MDEQ) in realization of this goal. This IDEP identifies common elements the regulated township, community, agency, public school system or university will implement in this plan, and areas where cooperation with Saginaw County agencies and the MDEQ is important. At a minimum the IDEP includes the following:

  • A program to find, prioritize and eliminate illicit discharges and illicit connections identified during dry weather screening activities.

  • A description of a program to minimize infiltration or seepage from sanitary sewers and onsite sewage disposal systems into the applicant's separate storm water drainage system.

  • A method for determining the effectiveness of the illicit discharge elimination activities which shall, at a minimum, result in the inspection of each outfall or point of discharge source every five years unless the Department (MDEQ) approves an alternate schedule. An alternative schedule may focus efforts on the most current urbanized area and cover other regulated areas less frequently.

  • Provide an updated map showing the location of each known outfall or point of discharge source in the most current regulated urbanized area, and the respective receiving water or drainage system.

This plan has been submitted to the Michigan Department of Environmental Quality. The full plan can be found here.