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.
- Announcement - 2018 Integrated Report Draft Assessment Methodology
- Michigan's Water Strategy
- Michigan Surface Water Programs
- Water Resources Division Metrics
- Nutrient Framework to Reduce Phosphorus and Nitrogen Pollution
- Clean Water Revolving Fund - SRF, SWQIF, SAW
- Flint Water
- Groundwater Discharge
- MDEQ/USACE Joint Permit Application
- Nestlé Waters North America's Submittal of a Permit Application Information Package, under Section 17 of the Michigan Safe Drinking Water Act, 1976 PA 399, as amended
- Part 5 Rules: Spillage of Oil/Polluting Materials
- Total Maximum Daily Load (TMDL) Assessments
- Water Use Program
- Water Withdrawal Assessment Tool
Michigan's Great Lakes
The Great Lakes are known for their beauty and the wealth of resources within and around them. The combined lakes contain one-fifth of the world's surface fresh water, with more than 3,000 miles of shoreline, the Great Lakes not only form Michigan's geography, but also shape our economy, society, and environment. The DEQ protects, preserves, and restores the Great Lakes through regulatory oversight with programs that range from the permitting of shore protection structures and dredging projects to the issuance of Great Lakes Bottomland Conveyances.
- Water Levels Dashboard
- Office of the Great Lakes
Michigan's Office of the Great Lakes works with the Departments of Environmental Quality and Natural Resources to protect, restore and sustain our state's water resources. The OGL has moved its website to www.michigan.gov/OGL.
The DEQ has primary enforcement authority in Michigan for the Federal Safe Drinking Water Act under the legislative authority of the Michigan Safe Drinking Water Act. As such, the DEQ has regulatory oversight for all public water supplies, including approximately 1,400 community water supplies and 10,000 noncommunity water supplies. The program regulates the water well drilling industry. Michigan has nearly (1.12 million) households served by private wells, with approximately 15,000 domestic wells drilled each year. The DEQ also investigates drinking water well contamination, and oversees remedial activities at sites of groundwater contamination affecting drinking water wells.
- Information about Lead and Copper in Drinking Water
- Operator Training and Certifications
- DEQ Drinking Water Laboratory
- Other Certified Drinking Water Laboratories
- Public Swimming Pools
- Drinking Water Revolving Fund
- School Drinking Water Training Program
- PFAS Response Website
Inland Lakes & Streams
Michigan has over 36,000 miles of streams, and more than 11,000 lakes and ponds. These precious water resources and the benefits they provide are protected by several state laws from impairment due to pollution, physical alterations and nuisance aquatic species. The State's water resources are monitored by the Department of Environmental Quality and partnering organizations to determine the water quality, the quantity and quality of aquatic habitat, the health of aquatic communities, and compliance with state laws.
The DEQ has the responsibility to protect the public health and the environment by ensuring wastewater is properly handled and treated safely. This is achieved through a series of programs that provide:
- engineering reviews of public wastewater infrastructure projects (Wastewater Construction Permits);
- licensing of treatment plant operators (Operator Training and Certification);
- licensing of septage haulers and approval of receiving stations and land application (Septage regulation);
- the control of industrial pollutants into publicly owned treatment works (Industrial Pretreatment Program); and,
- the encouragement of the beneficial reuse of wastewater treatment plant residuals (Biosolids Program).
- Clean Water Revolving Fund
- Michigan Surface Water Programs
- Wastewater Operator Certifications
- Wastewater Security
- Industrial Pretreatment
- Groundwater Discharge Permit Program
- Wastewater Construction Permits: Part 41
- Licensing and Handling of Septage Waste
- Sanitary and Combined Sewer Overflow
- What are wetlands and why are they important?
- Are there wetlands on my property?
- How are wetlands identified?
- State and Federal Wetland Regulations
- Local Wetland Regulations
- Wetland Permits
- Wetland Identification Program
- Pre-application Meeting - Wetlands and Inland Lakes and Streams
- Wetland Mitigation
- Wetland Mitigation Banking
- Great Lakes Shoreline Management
- Wetland Restoration and Watershed Planning
At DEQ, doing our best to help assure permits are issued timely is a common goal between DEQ and new businesses.
If you need assistance identifying permits for a new venture, refer to our DEQ Permit Checklist first.
If you have any questions, please contact the OEA, Permit Coordination program through our Environmental Assistance Hotline at 800-662-9278.
- MiWaters permitting and compliance database
- Combined Sewer Overflow (CSO) and Sanitary Sewer Overflow (SSO) Information
- Beach Monitoring System
- Dam Safety Consultants Registry
- Flood & Low Flow Discharge Reporting System
- Septage Haulers Directory
- Michigan Surface Water Information Management (MiSWIM) System