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Wisconsin’s 2018 impaired waters list

Every two years, Section 303(d) of the Clean Water Act requires states to publish a list of all waters that are not meeting water quality standards. In the proposed 2018 list update, DNR proposes to add 242 new waterbody segments. A majority of the listing additions were waters that exceed total phosphorus criteria. Thirty-five waterbodies are proposed to be delisted. A 30-day public comment period was held November 2017 through January 8, 2018. The final documents are listed below and some of the information found can be viewed on the 2018 Water Quality Report to Congress webpage.

Final 2018 impaired waters list materials

Data viewing tools

Factsheets

Contact information

For information contact:
Impaired Waters Program
Last revised: Monday April 02 2018