Skip to main content

Water Quality and Pollution Control in Michigan Sections 303(d), 305(b), and 314 Integrated Report

Red envelope Get the latest updates - subscribe to receive TMDLs and Integrated Reporting (Clean Water Act Sections: 303d, 305b, and 314) emails.


2022 Integrated Report

The Clean Water Act (CWA) requires Michigan to prepare a biennial report on the quality of its water resources as the principal means of conveying water quality protection/monitoring information to the United States Environmental Protection Agency (USEPA) and the United States Congress.  The Integrated Report satisfies the listing requirements of Section 303(d) and the reporting requirements of Section 305(b) and 314 of the CWA.  The Section 303(d) list includes Michigan water bodies that are not attaining one or more designated use and require the establishment of Total Maximum Daily Loads (TMDLs) to meet and maintain Water Quality Standards.  The 2022 Integrated Report was submitted to the USEPA on May 16, 2022.  Final Approval of the 2022 303(d) list is pending review by the USEPA.

2020 Integrated Report

The 2020 Integrated Report was submitted to the USEPA on September 28, 2020.  Final Approval of the 2020 303(d) list was received from the USEPA on October 28, 2020.