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  2. Impaired Waters and TMDLs

Impaired Waters and TMDLs in Region 5

Map of EPA Region 5

EPA Region 5 serves the Great Lakes and Upper Midwest states: Illinois, Indiana, Michigan, Minnesota, Ohio and Wisconsin and 35 tribes.

On this page:
  • State 303(d) Listing (Impaired Waters) Programs in Region 5
  • State TMDL Programs in Region 5
  • Related State Environmental/Water Programs in Region 5
  • Related Tribal Environmental/Water Programs in Region 5
  • Region 5 Staff Contacts
Search for TMDLs and Impaired Waters

Watershed Assessment, Tracking & Environmental Results System (WATERS) water quality information database

Assessment and TMDL Tracking and Implementation System (ATTAINS) database

  • Find a TMDL in Region 5
  • Find specific impaired waters or a state 303(d) list in Region 5

News

  • EPA Additions to Illinois' 2024 Impaired Waters List
  • EPA Additions to Indiana’s 2024 Impaired Waters List
  • EPA Approval of Ohio’s Maumee Watershed Nutrient Total Maximum Daily Load
  • EPA Additions to Indiana’s 2022 Impaired Waters List
  • Methodology for Connecting Annex 4 Water Quality Targets with TMDLs in the Maumee River Basin
  • EPA Additions to Indiana’s 2020 Impaired Waters List
  • EPA Additions to Minnesota’s 2020 Impaired Waters List

State 303(d) Listing (Impaired Waters) Programs in Region 5

  • Illinois 303(d) listing (impaired waters)
  • Indiana 303(d) listing (impaired waters)
  • Michigan 303d(d) listing (impaired waters)
  • Minnesota 303(d) listing (impaired waters)
  • Ohio 303(d) listing (impaired waters)
  • Wisconsin 303(d) listing (impaired waters)

State TMDL (Total Maximum Daily Load) Programs in Region 5

  • Illinois TMDL program
  • Indiana TMDL program
  • Michigan TMDL program
  • Minnesota TMDL program
  • Ohio TMDL program
  • Wisconsin TMDL program

Related State Environmental/Water Programs in Region 5

Illinois

  • Illinois State Water Quality Program
  • Illinois Monitoring Program
  • Illinois Water Assessment Program
  • Illinois NonPoint Source Program
  • Illinois NPDES Program

Indiana

  • Indiana State Water Quality Program
  • Indiana Monitoring Program
  • Indiana Water Assessment Program
  • Indiana NonPoint Source Program
  • Indiana NPDES Program

Michigan

  • Michigan State Water Quality Program
  • Michigan Monitoring Program
  • Michigan Water Assessment Program
  • Michigan NonPoint Source Program
  • Michigan NPDES Program

Minnesota

  • Minnesota State Water Quality Program
  • Minnesota Monitoring Program
  • Minnesota Water Assessment Program
  • Minnesota NonPoint Source Program
  • Minnesota NPDES Program

Ohio

  • Ohio State Water Quality Program
  • Ohio Monitoring Program
  • Ohio Water Assessment Program
  • Ohio NonPoint Source Program
  • Ohio NPDES Program

Wisconsin

  • Wisconsin State Water Quality Program
  • Wisconsin Monitoring Program
  • Wisconsin Water Assessment Program
  • Wisconsin NonPoint Source Program
  • Wisconsin NPDES Program

Related Tribal Environmental/Water Programs in Region 5

Tribes with Section 319 Programs

Note: 17 Tribes in Region 5 have Section 319 Programs.

  • Bad River Band of Lake Superior Chippewa Tribe
  • Bay Mills Indian Community Tribe
  • Fond du Lac Band of Lake Superior Chippewa Tribe
  • Forest County Potawatomi Tribe
  • Grand Portage Band of Lake Superior Chippewa Tribe
  • Grand Traverse Band of Ottawa and Chippewa Tribe
  • Lac du Flambeau Band of Lake Superior Chippewa Tribe
  • Little River Band of Ottawa Tribe
  • Little Traverse Bay Band of Odawa Tribe
  • Oneida Nation Tribe
  • Prairie Island Indian Community Tribe
  • Red Cliff Band of Lake Superior Chippewa Tribe
  • Red Lake Band of Chippewa Tribe
  • Saginaw Chippewa Tribe
    • Saginaw Chippewa Tribe Non-Point Source Management Plan (pdf)
  • ​Sokaogon Chippewa Community Mole Lake Band of Lake Superior Chippewa Tribe
  • Shakopee Mdewakanton Sioux Community Tribe
  • Stockbridge Munsee Community Band of Mohican Tribe

Tribes with Approved Water Quality Standard (WQS) Programs

  • Bad River Band of Lake Superior Chippewa Tribe
    • Water Quality Standards Regulations: Bad River Band of Lake Superior Chippewa Tribe
  • Fond du Lac Band of Lake Superior Chippewa Tribe
    • Water Quality Standards Regulations: Fond du Lac Band of Lake Superior Chippewa Tribe
  • Grand Portage Band of Lake Superior Chippewa Tribe
    • Water Quality Standards Regulations: Grand Portage Band of Lake Superior Chippewa Tribe
  • Lac du Flambeau Band of Lake Superior Chippewa Tribe
    • Water Quality Standards Regulations: Lac du Flambeau Band of Lake Superior Chippewa Tribe
  • Sokaogon Chippewa Community Mole Lake Band of Lake Superior Chippewa Tribe
    • Water Quality Standards Regulations: Sokaogon Chippewa Community Mole Lake Band of Lake Superior Chippewa Tribe

Impaired Waters and TMDLs

  • Program Vision
  • Impaired Waters and TMDLs throughout the U.S
  • Technical Tools and Resources
Contact Us About Impaired Waters and TMDLs
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 13, 2025
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