Milwaukee, Ozaukee County, Wisconsin
MI03
17600
0.00 - 9.00
9.00
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This portion of the Little Menomonee River was placed on the impaired waters list for Creosote in 1998. Sediment removal and rerouting have cleaned up the creosote and this listing is proposed for removal in the 2022 cycle, after groundwater PAH sources are determined. High bacteria levels (fecal coliform) were found during the 2010 evaluation. Additional evaluations of bacteria (E. coli) in the 2022 cycle confirmed high levels. The Milwaukee River TMDL restoration plan covers these listings and was approved in 2018. This river segment was evaluated for phosphorus and biology every two years from 2012 to 2024. Phosphorus levels are too high for healthy plant, bug, and fish communities. The phosphorus listing is also covered by the Milwaukee River TMDL restoration plan. Elevated temperature and chloride levels were found during the 2016 evaluation. This water is covered by the Menomonee River Watershed Nine Key Plan, approved in January 2022.Pollutant
E. coli
Listed For
Recreation
Impairments
Recreational Restrictions - Pathogens
Current Use
Restricted Recreation
Listing Status
TMDL Approved
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2022-023
Listing Date
4/1/2022
Impaired Water Notes
The Milwaukee River Watershed TMDL was approved by the EPA on March 9, 2018 and covers waters in the basin impaired for Total Phosphorus, Sediment/Total Suspended Solids, and bacteria (E. coli and Fecal Coliform).
Date
6/9/2021
Impaired Water Notes
This water was assessed during the 2022 listing cycle; new E. coli sample data exceeded 2022 WisCALM listing criteria for Recreation use.
Date
6/9/2021
Pollutant
Unknown Pollutant
Listed For
Fish and Aquatic Life
Impairments
Elevated Water Temperature
Current Use
Unsupported Aquatic Life
Listing Status
303d Listed
Attainable Use
WWSF - Warmwater Sport Fishery
Priority
Low
Designated Use
WWSF - Warmwater Sport Fishery
303(d) ID
2016-287
Listing Date
4/1/2016
Impaired Water Notes
This water was assessed during the 2016 listing cycle; temperature data exceeded 2016 WisCALM listing thresholds for the Fish and Aquatic Life use.
Date
8/21/2015
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new temperature sample data exceed 2018 WisCALM listing criteria for the Fish and Aquatic Life use.
Date
3/30/2017
Pollutant
Chloride
Listed For
Fish and Aquatic Life
Impairments
Acute Aquatic Toxicity, Chronic Aquatic Toxicity
Current Use
Unsupported Aquatic Life
Listing Status
303d Listed
Attainable Use
WWSF - Warmwater Sport Fishery
Priority
Low
Designated Use
WWSF - Warmwater Sport Fishery
303(d) ID
2016-009
Listing Date
4/1/2016
Impaired Water Notes
This water was assessed during the 2016 listing cycle; chloride sample data exceeded 2016 WisCALM chronic and acute listing criteria for the Fish and Aquatic Life use.
Date
8/21/2015
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new chloride sample data exceed 2018 WisCALM listing criteria for the Fish and Aquatic Life use.
Date
3/30/2017
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Degraded Biological Community
Current Use
Unsupported Aquatic Life
Listing Status
TMDL Approved
Attainable Use
WWSF - Warmwater Sport Fishery
Priority
Not Applicable
Designated Use
WWSF - Warmwater Sport Fishery
303(d) ID
2012-82
Listing Date
4/1/2012
Impaired Water Notes
The Milwaukee River Watershed TMDL was approved by the EPA on March 9, 2018 and covers waters in the basin impaired for Total Phosphorus, Sediment/Total Suspended Solids, and bacteria (E. coli and Fecal Coliform).
Date
3/9/2018
Impaired Water Notes
This water was assessed during the 2012 listing cycle, and total phosphorus sample data exceed 2012 WisCALM listing criteria for the fish and aquatic life use, and biological impairment was observed (i.e. at least one macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the poor condition category). See 2012 MMSD TP assessment results.
Date
8/30/2011
Impaired Water Notes
This water was assessed during the 2014 listing cycle; total phosphorus sample data overwhelmingly exceed 2014 WisCALM listing criteria for the Fish and Aquatic Life use and biological impairment was observed (i.e. at least one macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the poor condition category).
Date
2/26/2014
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data overwhelmingly exceed 2016 WisCALM listing criteria for the Fish and Aquatic Life use and biological impairment was observed (i.e. at least one macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the poor condition category).
Date
8/21/2015
Impaired Water Notes
This water was assessed during the 2020 listing cycle; new total phosphorus sample data exceeded 2020 WisCALM listing criteria for the 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
8/13/2019
Pollutant
Fecal Coliform
Listed For
Recreation
Impairments
Recreational Restrictions - Pathogens
Current Use
Restricted Recreation
Listing Status
TMDL Approved
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2010-26
Listing Date
4/1/2010
Impaired Water Notes
The Milwaukee River Watershed TMDL was approved by the EPA on March 9, 2018 and covers waters in the basin impaired for Total Phosphorus, Sediment/Total Suspended Solids, and bacteria (E. coli and Fecal Coliform).
Date
3/9/2018
Impaired Water Notes
Little Menomonee River is impaired by recreational restrictions due to high fecal coliform bacteria. High fecal coliform bacteria levels (exceedances of 400 cfu/100 mL, 47% of the time on an annual basis and 30% seasonally) restrict recreational uses. According to local studies, 75% of fecal coliform load cannot be accounted for and could be caused by illicit connections and leaking laterals.
Date
12/1/2009
Pollutant
Creosote
Listed For
Fish and Aquatic Life
Impairments
Chronic Aquatic Toxicity
Current Use
Unsupported Aquatic Life
Listing Status
303d Listed
Attainable Use
WWSF - Warmwater Sport Fishery
Priority
Low
Designated Use
WWSF - Warmwater Sport Fishery
303(d) ID
240
Listing Date
4/1/1998
Impaired Water Notes
Note: Internal tracking lists "EAP" but still considered Category 5A
Date
4/1/2008
Impaired Water Notes
The contaminated sediments in the stream have been removed and the stream rerouted away from the contaminated site. The fourth 5-year review of the clean up shows successful remediation in terms of the sediment. This water is proposed for delisting in 2022 after groundwater PAH sources are determined.
Date
4/26/2019