The purpose of MSD's Pretreatment Program is to:
- Prevent the introduction of pollutants into our public sewer system that will pass through the system without being adequately treated into local rivers and streams.
- Prevent the introduction of pollutants into our sewers and treatment plants that will interfere with our operations.
- Protect MSD personnel in the course of their employment and the general public.
- Enable MSD's compliance with its National Pollutant Discharge Elimination (NPDES) permits, sludge disposal, and other environmental regulations.