Environmental Protection

Rock River TMDL

Subscribe to Rock River TMDL project news Rock River Recovery is the official name of the Rock River Basin TMDL implementation process.

Northeast Lakeshore TMDL

Milwaukee River Basin TMDL

The Milwaukee River Bridge

Lower Fox River Basin Volunteer Monitoring Program

In May 2012, the U.S. Environmental Protection Agency (EPA) approved the Lower Fox River Basin Total Maximum Daily Load (TMDL). The TMDL set targets to improve surface water quality by reducing phosphorus and sediment loading in the watershed.

Lower Fox River Basin TMDL

The Lower Fox River basin is located in northeast Wisconsin and includes portions of Brown, Calumet, Outagamie and Winnebago counties and the Oneida Nation.

NR 140 Groundwater Quality Standards Update

Subscribe to NR 140 Updates As part of a continuing commitment to protect public health and the environment, the DNR periodically updates groundwater quality standards in ch. NR 140, Wis. Adm. Code.

Wisconsin's groundwater law

Wisconsin's groundwater law, Ch. 160, Wis. Stats., established the framework for a comprehensive approach to protect public health and welfare and the environment. The intent of this law is to minimize the concentration of polluting substances in…

Air Permit Search

Notice: Update personal bookmarks to the new link for the button below. Air Permit Search

Air Pollution Control Operation Permit Renewals FAQ

The following questions and answers explain how to submit an air pollution control operation permit renewal application.

Registration Permit Options

Registration operation permits (ROP) allow low emitting facilities to quickly register for an air permit. The permits contain facility-wide emission caps as well as monitoring, recordkeeping and reporting requirements. All four registration permit…