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The MPCA regulates the design, construction, and operation of treatment facilities for municipal and industrial wastewater in Minnesota.

Pesticide NPDES Permit Steps to Compliance Step 2: submit a notice of intent

The general permits related to wastewater in Minnesota.

MPCA municipal wastewater permit staff

Resources for wastewater clients.

MPCA issues coverage to construction site owners and their operators to prevent stormwater pollution during and after construction, and protect Minnesota's water resources.

The MPCA completed 68 enforcement cases for water quality, air quality, hazardous waste, stormwater, and wastewater violations in the first half of 2025.

Join the celebration! We look forward to highlighting Minnesota’s clean water successes and invite you to use our 50th anniversary art and branded graphics.

Minnesota industrial stormwater permittees in certain industries to monitor for PFAS in their stormwater runoff or snow.

Permit  2025 Multi-Sector General Permit for Industrial Stormwater (wq-strm3-102g) Effective June 1, 2025 Updates and new…

Northshore Mining operates the Peter Mitchell Mine, a taconite ore mining operation, in Babbitt. It sends the ore that it mines there via rail to a processing plant in Silver Bay, which is a separate facility with its own individual air permit.

Owners/operators of construction activity must complete several steps before completing a permit application and beginning construction. These steps also help owners/operators determine their eligibility for coverage under the general permit.

What is a stormwater catch basin, and should I be worried about it?

Answers to common questions about the Construction Stormwater Permit application

Details for solid waste management facility permit issuance and reissuance.

Cleveland-Cliffs owns the Minorca Mine northeast of Virginia, Minnesota. The mine’s two taconite mining pits are about one mile southeast of the plant.

Wastewater treatment and disposal are important for protecting and preserving Minnesota's water resources. MPCA regulates wastewater treatment activities in Minnesota.

General Waste and Recycling, LLC plans to convert approximately 19 acres of permitted industrial solid waste space in Itasca County so that it can accept nearly 100,000 cubic yards of municipal solid waste (MSW) per year.

Environmental information and permits that affect hot mix asphalt plants.

Guidance on NPDES/SDS construction stormwater requirements