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Municipal Separate Storm Sewer System
Practices to consider Minimum Control Measure 1 Minimum Control Measure 2 Minimum Control Measure 3 Minimum Control Measure 4 Minimum Control Measure 5 Minimum Control Measure 6 Guidance/Documents Related Information Photo Library
Minimum Control Measures provided are to establish the initial framework for an MS4 system.

The MS4 general permit is designed to reduce the amount of sediment and other pollutants entering state waters from stormwater systems. Entities regulated by the MS4 general permit must develop a stormwater pollution prevention program and adopt best practices. Learn more on the Complying with the MS4 general permit page. A general permit covers multiple entities with similar operations and types of discharges. Issuing general permits allows for faster and more efficient permitting compared to issuing individual permits.

This page is a home page for the 2020 Minimum Control Measures of the Minnesota MS4 permits. Information found within this page can be used to find the requirements and help meet the requirements cities must meet in Minnesota for the MS4 permit.