Regulations · United States

Industrial water in Michigan

Water availability, discharge permits, reuse and pollutants: key points for an industrial facility in Michigan, with official sources.

Federal rules apply first. This profile adds the Michigan requirements and water availability context; local sewer authorities and permits complete them.Read the federal framework

Why water matters here

Access to Great Lakes water does not guarantee that a local stream or aquifer can support an increased withdrawal. Michigan's Water Use Program evaluates potential adverse resource impacts and reflects Great Lakes protections. Before a new or increased large-quantity withdrawal, determine whether registration or a permit is required and complete the applicable assessment.

EGLE's Part 327 guidance describes a large-quantity withdrawal as having capacity to withdraw more than 100,000 US gallons per day over a 30-day period, with the combined pumps on the property taken into account. Apply the precise definition, aggregation rules and exemptions before starting a new or increased withdrawal; typical daily consumption alone does not establish the authorization route.

Sources: Michigan Water Use Program; Michigan Part 327 permits and registration

Rules to know

Your industrial wastewater may contain PFAS

Michigan's Industrial Pretreatment Program PFAS Initiative has identified and reduced industrial PFAS sources entering municipal wastewater systems since 2018. It can lead to source investigation, monitoring and pretreatment actions through the responsible authority. Check the obligations imposed on your facility rather than assuming a sewer connection removes PFAS concerns.

Michigan has water-quality values for several PFAS used in protecting surface waters. A receiving-water value is not automatically an identical limit at every factory outlet. The NPDES permit, industrial pretreatment requirements and applicable state rules establish the site's controls.

Sources: Michigan IPP PFAS Initiative; Michigan regulated wastewater and PFAS water quality values

Metals, nutrients and treatment residues

Cadmium and other metals remain subject to the applicable industrial category and site controls. Nitrite, nitrate, ammonium and phosphorus forms must match the monitoring plan. PFAS captured in sludge or filter media create an additional residual-management question; removing them from water does not prove destruction.

Your needs

Confirm withdrawal assessment and the wastewater authority's controls. Characterize input and output metals, nutrients and relevant PFAS, assess treatment or retreatment and residual management, monitor water quality and supply impact, and preserve traceable reports with certified authenticity.

Detailed state profiles in this edition: California, Texas, Arizona, Nevada, Colorado, Florida, New York and Michigan. This is a federal overview with eight documented state profiles, not a completed review of all 50 states. For other locations, the federal overview remains useful but a state and local review is still needed. Your discharge permit, sewer authorization and water supply conditions determine the requirements for your facility.

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