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Title: NPDES/SDS Municipal Stormwater Permits
Alternate Title: NPDES/SDS Municipal Stormwater Permits
Description: Minnesota Pollution Control Agency (MPCA)
Subject: Water
Water Quality
Creation Date: 9/15/2008 12:11:46 PM
Modification Date: 7/3/2024 4:03:45 PM
Agency Name: Pollution Control Agency (MPCA), Minnesota
Agency URL: https://www.pca.state.mn.us
Agency Description: The Minnesota Pollution Control Agency is responsible for administering environmental permitting, compliance/enforcement, remediation and outreach programs to help Minnesota protect its environment.
Agency Phone: 651-296-6300
800-657-3864
Agency Fax: Agency URL: https://www.pca.state.mn.us
Agency Address:
520 Lafayette Rd. N.

St. Paul
MN 55155

Unit Name: Stormwater hotline
Unit URL:
Unit Description:
Unit Phone: 651-757-2119
800-657-3804
Unit Fax: Contact person(s): onlineservices.pca@state.mn.us
Unit URL:
Audience: Application URL:
Renewal URL:
Versa URL:
Requirements:
A municipal separate storm sewer system (MS4) is a conveyance or system of conveyances (roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that is also:
  • owned or operated by a public entity (which can include cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, sewer districts, etc.).
  • designed or used for collecting or conveying stormwater.
  • not a combined sewer.
  • not part of a publicly owned treatment works.
 
MS4s in Minnesota must satisfy the requirements of the MS4 general permit if they are at least one of the following:
  • located in an urbanized area and used by a population of 1,000 or more
  • owned by a municipality with a population of 10,000 or more
  • have a population of at least 5,000 and the system discharges to specially classified bodies of water.

Minn. Rules 7090 establishes criteria and a process for designating future MS4s.

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.

See also:

2020 MS4 General Permit

Coal tar-based sealants

Application processing: Contact MPCA staff assigned to your MS4


Rules: 7090.0010

Statutes: 115.03

Forms:

2020 MS4 General Permit

Forms, fact sheets, and other resources are available at Municipal stormwater (MS4)


Fees:
Period of Issuance:

For general permits, up to five years depending on when an application is submitted within the five year permit term. Individual permits are typically issued for a five year term.


Length of Determination: Applicants are covered under the general permit after application and SWPPP review followed by public notice. Current permittees must provide notice of intent to reapply for permit coverage 180 days prior to permit expiration, and continue to operate under the existing permit until coverage is extended under the reissued permit.
Other Info:
Activity: License Detail URL:

Municipal stormwater (MS4)

Stormwater permits

Online services

Minnesota Pollution Control Agency (MPCA)


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