Pretreatment Program

The Pretreatment Program regulates the discharge of non-domestic wastes to the plant. This includes:
  • Industrial wastes
  • Other non-residential hauled wastes
  • Catch basin contents
  • Contaminated groundwater and more


Program personnel determine whether wastes will meet regulations. Where appropriate, waste sources are required to obtain permits or letters of acceptance. In order to meet regulations, the sources may be required to control pollutant levels in the waste prior to discharge (pretreatment).

Ordinance & Requirements

  • Industrial wastes are permitted in accordance with Chapter 29.10 (PDF) of the City of Waukesha Municipal Code.
  • All categorically regulated sources are required to obtain an Industrial Wastewater Discharge Permit.
  • Regulated sources are listed in 40 CFR Chapter 1, Subchapter N, Parts 400-471.
  • Industrial sources not subject to categorical classification may be subject to regulation locally under Chapter 29.10(a)(1) (PDF).
  • Permitting is required at the discretion of the City for non-categorical wastes.

More Information

Please contact the Pretreatment Coordinator at 262-524-3628 for further details.