Governing Law and Regulations
Michigan Department of Environmental Quality (DEQ)
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 has adopted both federal technology-based and water-quality-based effluent standards. However, the state emphasizes the technology-based approach. Water-quality-based standards are typically applied when the technology-based limitations prove insufficient to achieve regulatory compliance. For more information about EPA's federal requirements, see the national section EFFLUENT LIMITATIONS.
• Administration and enforcement. The DEQ administers and enforces the state's effluent limitation regulations.
WATER QUALITY STANDARDS
MAC r. 323.1041 to 323.1117
State water quality standards establish the water quality requirements applicable to the Great Lakes, the connecting waters, and all other surface waters of the state to protect the public health and welfare, to enhance and maintain the quality of water, to protect the state's natural resources, and to serve the purposes of state water protection ...