Impaired Water - Wisconsin River (Wisconsin River)
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Columbia, Sauk County, Wisconsin
LW21, LW25, LW26
1179900
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115.81 - 137.63
21.82
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This segment of the Wisconsin River has been listed on the state's 303(d) impaired waters list since 1998 for Mercury and PCBs in fish tissue. Assessments of new total phosphorus and chloride data during the 2020, 2022, and 2024 listing cycles showed conditions appropriate for healthy aquatic communities like plants, fish, and bugs. Available bug sample data were in fair condition.
Listing Details
Pollutant
PCBs
Listed For
Fish Consumption
Impairments
PCBs Contaminated Fish Tissue
Current Use
Specific Restricted Fish Consumption
Listing Status
303d Listed
Attainable Use
General Fish Consumption Advice
Priority
Low
Designated Use
General Fish Consumption Advice
303(d) ID
530
Listing Date
4/1/1998
 
Pollutant
Mercury
Listed For
Fish Consumption
Impairments
Mercury Contaminated Fish Tissue
Current Use
Specific Restricted Fish Consumption
Listing Status
303d Listed
Attainable Use
General Fish Consumption Advice
Priority
Low
Designated Use
General Fish Consumption Advice
303(d) ID
530
Listing Date
4/1/1998