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Water permit holders and chloride

Chloride is a problem for wastewater facilities and stormwater permittees.

Wastewater permit additional guidance and information

Resources for wastewater clients.

Complying with the MS4 general permit

Part 70 manufacturing general permit

General permit intended for facilities using processes including abrasive blasting, brazing, catalytic or thermal oxidizers, dip tanks, injection molding, resin and gel coating, spraying and coating activities, and welding.

Air permitting: Guide for residents

Any facility that emits air pollutants above certain levels is required to have an air quality permit.

Step 5: Terminating pesticide permit

Pesticide NPDES permit steps to compliance: Terminating pesticide permit

Air permit compliance forms

Forms and guidance for recordkeeping, submittal, and reporting for air permits.

Stormwater permits

Image Stormwater has an enormous impact on water quality in Minnesota, whether it's runoff from farm fields or from urban hardscapes. Rain and snow…

Air permit forms removed

Part 70 Reissuance application formsStarting July 1, 2020, Individual permit holders must use MPCA's e-Services to apply for air permit reissuance.Paper reissuance applications will only be accepted…

Step 1: Do you need a permit?

Any facility that is engaged in a narrative activity or a primary SIC code, as listed in the Multi-Sector General Permit, needs to apply for industrial stormwater permit coverage or certify for No Exposure.

Northshore Mining fined $19,000 for wastewater permit violations

From 2023-2025, Northshore Mining released recycled water to the ground seven times and water relating to mining processes four times. Its largest unpermitted release was nearly 400,000 gallons of recycled water. Northshore Mining has documented equipment failure as the reason for the 11 releases.

Hartland and Hollandale fined for wastewater permit violations

Cities fined over $12,000 apiece for municipal wastewater violations

Crop production on NPDES/SDS permitted sites

Guidance on NPDES/SDS construction stormwater requirements

Northern Minnesota manufacturer fined for air permit violations

MPCA investigators say West Fraser paid a fine of $15,775 for air permit violations at their facility in Solway.

Step 2: Pesticide permit notice of intent

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

Step 1: Pesticide permit applicability and thresholds

To help you quickly determine whether this permit affects you, what your requirements are, and what to do next, the MPCA has developed an Applicability flow chart

Minnesota River Basin: General phosphorus permit phase 1

This permit aims to reduce phosphorus discharged by point sources to the Minnesota River Basin. This webpage contains links to the permit and its associated forms and fact sheets.

Step 5: Apply for or modify your permit/certification

Industrial Stormwater Steps to Compliance - Step 5: Gather application materials before applying, use the e-Service to apply or modify coverage

Waconia facility fined more than $11,000 for permit violations

The MPCA fined Cabinetworks Group’s Waconia facility, Wood Products, $11,520 for violations of its air permit.

MPCA targets PFAS in draft wastewater permit for 3M’s Cottage Grove facility

The Minnesota Pollution Control Agency (MPCA)’s draft wastewater permit for the 3M facility at Cottage Grove adds new water quality protections for the Mississippi River and improves accountability through monitoring and reporting requirements. The draft permit is one of the most rigorous in state history and mandates the removal of certain per- and polyfluoroalkyl substances (PFAS) to levels below detection.