Impaired Water - Saint Croix River (St Croix River)
Polk County, Wisconsin
SC08, SC09
2601400
44.72 - 54.55
9.83
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Fish consumption advisory for PCBs likely associated with contaminated sediment in Mississippi River. Will be handled in conjunction with PCB TMDL for Mississippi River.

This water was assessed during the 2014 listing cycle; total phosphorus sample data clearly met 2014 WisCALM listing thresholds for the Fish and Aquatic Life use (no biological data (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scores) were available to assess biological impairment).

This water was assessed during the 2018 listing cycle; new chloride and biological (fish Index of Biotic Integrity (IBI) scores) sample data were clearly below 2018 WisCALM listing thresholds for the Fish and Aquatic Life use.

Assessments of new chloride levels during the 2020 listing cycle showed conditions appropriate for healthy aquatic communities like plants, fish, and bugs.
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
Unrestricted Fish Consumption
Priority
Low
Designated Use
Unrestricted Fish Consumption
303(d) ID
618
Listing Date
4/1/1998
Impaired Water Notes
2004 303d list, footnote 8: Fish consumption advisory for PCBs likely associated with contaminated sediment in Mississippi River. Will be handled in conjunction with PCB TMDL for Mississippi River.
Date
10/26/2009