Regulations
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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…
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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.
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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…
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Annual Fee Structure for Title V Sources Required to Have an Air Permit
In addition to the per ton fee, all Title V sources pay a base emission fee. The source’s total emissions determine the base emissions fee. Additional fees apply to facilities subject to the following federal regulatory programs. Maximum…
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NR 809 safe drinking water standards update
The state's safe drinking water code ch. NR 809 Wis. Adm. Code will be revised to include federal PFAS maximum contaminant levels (MCLs), technical edits and updates to lead and copper. As information about these rule updates becomes available, it…
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Drinking water administrative codes
Wisconsin Administrative Codes that relate to private and public drinking water are provided on this page as links to the Wisconsin Legislative website. To request an official paper copy of a specific code, follow the instructions on the Wisconsin…
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Wisconsin Animals
Wisconsin hosts 668 native vertebrates, including fishes, amphibians, reptiles, birds and