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Michigan's Industrial Pretreatment Program (IPP) Overview

Pollutants in industrial wastewater may compromise municipal treatment plant processes or contaminate waters of the state.  To protect municipal treatment plants and the environment, the Pretreatment Program requires industrial dischargers to use treatment techniques and management practices to reduce or eliminate the discharge of harmful pollutants to sanitary sewers.  The Pretreatment Program is a core part of the Clean Water Act's National Pollutant Discharge Elimination System (NPDES).

It has helped communities:

  • Maintain and restore watershed quality at a much lower cost than upgrading treatment;
  • Encourage pollution prevention;
  • Increase beneficial uses of sewage sludge;
  • Prevent formation of poisonous gases in the sanitary sewer system;
  • Meet wastewater discharge standards; and
  • Institute emergency-prevention measures.

Purpose of IPP

 


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