Environmental Protection

Wisconsin Pest Control Pollutant Discharge Permits

Wisconsin General Permits are available for pest control treatment projects that have a pollutant discharge to a water of the state. The four Wisconsin WPDES general permits listed below were first issued in October 2011 and reissued effective…

Adaptive Management and Water Quality Trading Project Locations

This map depicts WPDES permit holders that have formally selected adaptive management or water quality trading as their preferred phosphorus compliance option. Select a pin on the map to view more information about the permit holder, including the…

Wastewater Plan Submittal Requirements by Project Type

Due to the closure of GEF3, the department has updated mailing addresses for plan submittals. For mail sent via any non-USPS carriers (UPS, FedEX, Spee-Dee, etc.) please use the updated address below.DNR has returned to requiring paper submittals…

Adaptive Management

Project maps Find adaptive management and water quality trading projects around the state. Tools Resources are available to assist you in developing adaptive management and water quality trading plans and in modeling the impacts of management…

Approved TMDLs

The following TMDLs have been approved by the DNR and the EPA. To see a list of waters that are included in these TMDLs, please use our Impaired Waters tool to find waters with the status code of Approved TMDL. To see a map of TMDL sites, use the…

TMDL implementation planning

A Total Maximum Daily Load (TMDL) implementation plan is a document that provides details of the actions needed to achieve pollutant load reductions, outlines a schedule of those actions and specifies monitoring needed to document actions and…

TMDL Fact Sheets

What is a TMDL? A Total Maximum Daily Load (TMDL) is the maximum amount of a pollutant that a body of water can receive while still meeting water quality standards. A waterway that exceeds water quality standards is often no longer suitable for its…

TMDLs in Development

Wisconsin TMDLs in development include waters where specific projects have been started. These projects gather detailed water quality data, analysis of data for modeling pollutant loads and determine reductions and/or where resource professionals…

Point Source TMDL Implementation

Once a TMDL is approved, federal and state regulations require implementation of point source requirements, or wasteload allocations (WLAs), from the TMDL to be expressed in Wisconsin Pollutant Discharge Elimination System (WPDES) permits.…

TMDL Overview