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Why we regulate
Learn what types of wastewater discharges are regulated and how.
Plan review
The DNR reviews plans for municipal and industrial wastewater treatment plant construction.
Discharge permits
Wastewater discharges to surface or groundwater.

Current WPDES wastewater permit holders

Alphabetical listings of the municipal WPDES wastewater permit holders and industrial WPDES wastewater permit holders can be accessed through the links listed below. Each list has the name of the permit holder, the mailing address, responsible official, telephone number, WPDES permit number and expiration date, and the county where the facility is located. The lists are provided here in both Excel spreadsheet and PDF formats. Listings last updated July 29, 2019.

Contact information
For more information on WPDES permitted facilities, contact:
David Argall
Wastewater permits database file manager
Last revised: Tuesday July 30 2019