Residents
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High capacity well application and instructions
A high capacity well is a well that has the capacity to withdraw more than 100,000 gallons per day, or a well that, together with all other wells on the same property, has a capacity of more than 100,000 gallons per day. Residential wells and fire…
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High capacity wells
A high capacity well is a well that has the capacity to withdraw more than 100,000 gallons per day, or a well that, together with all other wells on the same property, has a capacity of more than 100,000 gallons per day. Residential wells and fire…
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Heat exchange drilling (geothermal systems)
Heat exchange drilling in Wisconsin requires a license.
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Well filling and sealing
Abandoned or unused wells pose a great threat to the safety and quality of groundwater drinking water supplies. An unused well provides a direct path for contaminants and pollutants to the underground aquifers that supply working wells.Wells must be…
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WPDES Permits on Public Notice
Public notices are required by law to alert interested members of the public of the DNR's intention to authorize a Wisconsin Pollutant Discharge Elimination System (WPDES) discharge to a water of the state. The notices are posted here on the DNR…
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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…
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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…
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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…
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Upper Fox and Wolf Rivers TMDL
The Upper Fox River and Wolf River Basins. © Winnebago Waterways