Washington County, Wisconsin
MI03
16000
24.81 - 30.14
5.33
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This portion of the Menomonee River was listed for total phosphorus from 2014 - 2018; this segment is proposed for relisting in the 2024 cycle and is covered by the Milwaukee River TMDL. This water is covered by the Menomonee River Watershed Nine Key Plan, approved in January 2022.
E. coli was added as an Impairment during the 2026 cycle as new data suggested harmful levels for recreation.Pollutant
E. coli
Listed For
Recreation
Impairments
Recreational Restrictions - Pathogens
Current Use
Restricted Recreation
Listing Status
Addition
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2026-53
Listing Date
4/1/2026
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Degraded Fish Community
Current Use
Unsupported Aquatic Life
Listing Status
TMDL Approved
Attainable Use
Default - Fish and Aquatic Life
Priority
Not Applicable
Designated Use
Default - Fish and Aquatic Life
303(d) ID
2024-76
Listing Date
4/1/2024
Impaired Water Notes
This water was assessed during the 2014 listing cycle; total phosphorus sample data exceed 2014 WisCALM listing criteria for the Fish and Aquatic Life use, however, available biological data do not indicate impairment (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category).
Date
1/21/2014
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new total phosphorus sample data were clearly below 2018 WisCALM listing thresholds for the Fish and Aquatic Life use.
Date
5/22/2017