Water Quality
  • The DEQ ensures Michigan's water resources remain clean and abundant by establishing water quality standards, overseeing public water supplies, regulating the discharge of industrial and municipal wastewaters, monitoring water quality and the health of aquatic communities, developing policy, and fostering stewardship. Water-related program staff provide for the protection, restoration and conservation of Michigan's Great Lakes, inland lakes and streams, wetlands, and groundwater.
  • Michigan's Water Strategy
  • Water Quality News and Announcements
  • Michigan Surface Water Programs

Great Lakes

Drinking Water

Lakes & Streams

Wastewater

Wetlands

Permits