State Agencies
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PFAS News and Reports
The DNR is committed to keeping citizens and other stakeholders informed about PFAS in Wisconsin. Below are reports, news releases and important information from the DNR.ReportsPFAS in Wisconsin: January - June 2024PFAS in Wisconsin: July - December…
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Choose a map
Maps help present information in a form that is more easily understood and meaningful to broad audiences. You can browse the mapping applications below for more specific information displayed in a map format. Many of these maps are interactive,…
- Webpage
Air Monitoring Map for Industrial Sand Mine/Processing Plants
Industrial sand operations that have a requirement in their permit to monitor for particulate matter must provide ambient monitoring data to the DNR. The DNR Air Management Program works with industrial sand facilities to provide technical…
- Webpage
Locations of Industrial Sand Mines and Processing Plants in Wisconsin
Industrial sand for use in the petroleum, glass and foundry industries has been produced in Wisconsin for over 40 years. The demand for sand increased exponentially starting in 2014, related to use of Wisconsin sand as a proppant in the extraction…
- Webpage
Wisconsin's Water Quality Report to Congress
Every two years section 305(b) of the Clean Water Act requires states to publish an overall report on the quality of all surface waters across the state. This report, called the Integrated Report of Water Quality, is submitted to the EPA on April 1…
- Webpage
Public Participation in Water Quality Assessments
The DNR is seeking data on the water quality of lakes, streams and rivers in our state. Along with Department data, submitted data will be used to assess the quality of our state's water resources and pinpoint problem areas. Data will be…
- Webpage
Surface Water Quality Assessment Process
Subscribe to receive updates about water quality standards and assessments. The Clean Water Act (CWA) requires states to assess the quality of its surface waters and report the results to the public.
- Webpage
Surface Water Impairments and Pollutants
Impaired waters are identified by comparing monitoring results for a given water to water quality parameter thresholds, which provide guidelines for identifying water quality conditions. Impaired waters in Wisconsin are affected by a variety of…
- Webpage
Featured water restorations
Since 2002, Wisconsin has delisted 147 individual streams, lakes and beaches, representing approximately 500 stream miles and 52,800 lake acres. Below are a few stories of the road to these waters' aquatic health recovery.
- Webpage
Water Condition Lists
Every two years, Sections 303(d) and 305(b) of the Clean Water Act (CWA) require states to publish a list of all waters not meeting water quality standards and an overall report on surface water quality status of all waters in the state. To comply…