Pollution Prevention for Industries
Click here to learn about minimizing discharges of salt, mercury and other pollutants at your facility.
Pretreatment Coordinator

Julie Maas
(608) 222-1201 ext. 309

Additional Pretreatment Info
US EPA’s National Pollutant Discharge Elimination System (NPDES)
Wisconsin DNR (WPDES)
Wisconsin’s pretreatment  streaming rule changes

Wisconsin Certified Labs
Sample results submitted under industrial wastewater permit requirements must be generated by laboratories certified by the state under NR 219 (lab methods) and NR 211 (pretreatment standards)

Spills to the Environment:
Call 1-800-943-0003

Spills to the Sanitary Sewer System:
Call (608)-222-1201 ext 0

Pretreatment Program

The Effect on Wisconsin

Although you may not always be thinking about what you or your company puts into the sewer system, any material flushed has a large effect on us and our natural habitat and environment.


What we put into the sewer system can impact:

  • Water quality for the organisms in the streams.
  • Worker health and safety.
  • Biology of the treatment plant.
  • Quality of our Metrogro.
  • Sewers and pumping stations.

Visit and read the district’s Sewer Use Ordinance to discover what can and cannot be placed in our sewer system. With the proper education and practices, we can begin to make strides toward a better Wisconsin.

The District Takes Preventative Measures


Our advanced treatment plant removes organic material and pollutants like nitrogen and phosphorus, but toxic pollutants can harm treatment facilities or even pass through to the state’s waterways. To avoid this, the district has created a pretreatment program to keep Wisconsin safe.


Our Industrial Pretreatment program aims to keep toxic and non-compatible pollutants out of our sewer system by utilizing our protection, prevention and permit philosophy.

  • Protection controls pollutants capable of causing immediate or long-term problems.
  • Prevention makes sure that toxic or incompatible materials are not flushed down the drain by households and industrial sources.
  • Permits and regulations keep toxic pollutants out of the sewer system.

The Importance of Permits

Wastewater pretreatment might be the most successful environmental program that relies on all three levels of government. National, state and local pretreatment regulations all help keep our wastewater safe.