Michigan NPDES regulations & environmental compliance analysis

Michigan NPDES: What you need to know

Governing Law and Regulations

National Pollutant Discharge Elimination System (NPDES) permit program: Michigan Administrative Code (MAC) r. 323.2101 to 323.2195

For a Limited Time receive a FREE EHS Report "Recordkeeping for EHS Managers." This special report contains a recordkeeping checklist to help you keep track of your records for major environmental laws and OSHA's Hazard Communication Standard. Download Now

Applicability: MAC r. 323.2106

Prohibited discharges: MAC r. 323.2136

Exemptions: MAC r. 323.2109

Permit process: MAC r. 323.2106 and MAC r. 323.2108

Public notice: MAC r. 323.2117 to 323.2119

Confidential information: MAC r. 323.2128

Permit modifications: MAC r. 323.2159

Permit conditions:

Permit terms: MAC r. 323.2136 to 323.2149

Reporting requirements: MAC r. 299.9004

Clean Corporate Citizen (C3) program: MAC r. 323.2193 to 323.2195

Regulatory Agencies

Michigan Department of Environmental Quality (DEQ) Water Resources Division

Michigan Water Resources Commission (Commission)

U.S. Environmental Protection Agency (EPA) Region 5

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Michigan is authorized by the U.S. Environmental Protection Agency (EPA) to issue state permits, general permits, federal facility permits, and pretreatment permits under the federal National Pollutant Discharge Elimination System (NPDES) permit program for wastewater discharges. Michigan issues three types of NPDES permits: individual permits, general permits, and permits-by-rule.

Administration and enforcement. DEQ's Water Resources Division administers and enforces the NPDES permit requirements in Michigan.

State Requirements


Michigan issues NPDES general permits for stormwater discharges and for confined animal feeding operations (CAFOs). See the state sections STORMWATER-GENERAL and AG WASTE for more information on these types of NPDES discharge permits.

Michigan also issues state groundwater permits for wastewater discharges to the land or groundwater. See the state section

Read more about NPDES