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Hennepin County > Transportation > Water quality protection along county roads

Water quality protection along county roads

Municipal Storm Sewer System (MS4) permitting

Hennepin County manages 2,200 lane miles of roadway and associated right-of-way throughout the county. An important part of this work is the proper treatment and discharge of stormwater. This is governed by the Municipal Storm Sewer System (MS4) permitting by the Minnesota Pollution Control Agency.

  • Provide feedback on MS4

Questions or feedback?

dispatch@hennepin.us

Phone: 612-596-0299

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Learn more about MS4

The county inspects drainage infrastructures annually to ensure both proper drainage and that structures are properly filtering for water quality protection purposes. Road upgrades and maintenance include studying water quality for the best management practice and upgrading infrastructure when necessary.

MS4 Storm Water Pollution Prevention Program (SWPPP)

The Storm Water Pollution Prevention Program covers six minimum control measures to help reduce the discharge of pollutants from our storm sewer system, to the maximum extent practicable. The minimum control measures (MCMs) include:

  • MCM 1 – Public education and outreach
  • MCM 2 – Public participation/involvement
  • MCM 3 – Illicit discharge detection and elimination
  • MCM 4 – Construction site runoff control
  • MCM 5 – Post-construction site runoff control
  • MCM 6 – Pollution prevention/good housekeeping

Learn more about the Municipal Separate Storm Sewer System (MS4) permit.

Supporting MS4 documentation

MS4 permit/SWPPP document

Hennepin County MS4 permit (PDF)

Standard operating procedures report

The standard operating procedures report below covers Hennepin County's MS4 Storm Water Pollution Prevention Program.

MS4 standard operating procedures (PDF)

Regulatory enforcement standards document

The MS4 regulatory enforcement standards establish regulatory requirements to prohibit illicit discharges to the Small Municipal Separate Storm Sewer System (MS4) and guide land-disturbing construction activities and post-construction stormwater management in Hennepin County. To view the enforcement standards, select the document below.

MS4 regulatory enforcement standards (PDF)

Total maximum daily load (TDML) technical memorandum 

A TDML is the amount of pollutants a body of water can receive and still meet water quality standards. Hennepin County's technical memorandum summarizes impaired waters in which Hennepin County has a waste load reduction for total phosphorus (TP) or total suspended solids (TSS).

TDML technical memorandum (PDF)

Report suspected stormwater contamination

Any substance that is not stormwater or from a fire hydrant may be considered stormwater contamination. It is illegal to place anything in the stormwater system including:

  • Sediment
  • Oil/petroleum products
  • Soaps/detergents
  • Household or industrial chemicals
  • Agricultural waste
  • Sewage

Green Disposal Guide

To learn more about proper disposal of the items listed above, visit Hennepin County's green disposal guide.

Report an issue on a county road

To report any suspected contamination, fill out the county's related form.

Report an issue on a city street

For questions or to report maintenance issues on a city street, please contact the local city’s public works department for assistance.

Contact information including each city’s website, phone, email and/or online reporting form are available below.

Bloomington

  • City of Bloomington website
  • Phone: 952-563-8760
  • Email: publicworks@bloomingtonmn.gov

Brooklyn Center

  • City of Brooklyn Center website
  • Phone: 763-585-7103
  • Email: publicworks@ci.brooklyn-center.mn.us

Brooklyn Park

  • City of Brooklyn Park website
  • Phone: 763-493-8007
  • Report an issue in Brooklyn Park

Champlin

  • City of Champlin website
  • Phone: 763-421-2820
  • Report an issue in Champlin

Chanhassen

  • City of Chanhassen website
  • Phone: 952-227-1300

Corcoran

  • City of Corcoran website
  • Phone: 763-420-2652
  • Email: pw@ci.corcoran.mn.us

Crystal

  • City of Crystal website
  • Phone: 763-531-1164

Dayton

  • City of Dayton website
  • Phone: 763-427-3224

Deephaven

  • City of Deephaven website
  • Phone: 952-358-9935

Eden Prairie

  • City of Eden Prairie website
  • Phone: 952-949-8300
  • Report an issue in Eden Prairie

Edina

  • City of Edina website
  • Phone: 952-826-0376
  • Email: mail@edinamn.gov
  • Report an issue in Edina

Excelsior

  • City of Excelsior website
  • Phone: 952-474-3464 / 952-258-5321 (after-hours)
  • Report an issue in Excelsior

Golden Valley

  • City of Golden Valley website
  • Phone: 763-593-8030
  • Email: publicworksdept@goldenvalleymn.gov
  • Report an issue in Golden Valley

Greenfield (Excelsior office)

  • City of Greenfield website
  • Phone: 763-477-6464

Greenwood (Rockford office)

  • City of Greenwood website
  • Phone: 952-474-6633

Hanover

  • City of Hanover website
  • Phone: 763-497-3777

Hopkins

  • City of Hopkins website
  • Phone: 952-939-1382
  • Report an issue in Hopkins

Independence

  • City of Independence website
  • Phone: 763-479-0530

Long Lake

  • City of Long Lake website
  • Phone: 952-476-2855

Loretto

  • City of Loretto website
  • Phone: 763-479-4305

Maple Grove

  • City of Maple Grove website
  • Phone: 763-494-6370
  • Email: publicworks@maplegrovemn.gov

Maple Plain

  • City of Maple Plain website
  • Phone: 763-479-0525
  • Email: publicworks@mapleplain.com

Medicine Lake

  • City of Medicine Lake website
  • Phone: 763-542-9701

Medina

  • City of Medina website
  • Phone: 763-473-8852 / 952-258-5321 (after-hours)

Minneapolis

  • City of Minneapolis website
  • Phone: 3-1-1 / 612-673-3000
  • Email: minneapolis311@minneapolismn.gov

Minnetonka

  • City of Minnetonka website
  • Phone: 952-988-8400
  • Report an issue in Minnetonka

Minnetonka Beach

    City of Minnetonka Beach website
  • Phone: 952-471-8878
  • Email: info@ci.minnetonka-beach.mn.us

Minnetrista

  • City of Minnetrista website
  • Phone: 952-446-1312
  • Email: minnetrista@ci.minnetrista.mn.us

Mound

  • City of Mound website
  • Phone: 952-472-0603

New Hope

  • City of New Hope
  • Phone: 763-592-6777
  • Email: publicworks@newhopemn.gov

Orono

  • City of Orono website
  • Phone: 952-249-4600 / 952-258-5321 (after-hours)
  • Report an issue in Orono

Osseo

  • City of Osseo website
  • Phone: 763-425-5741

Plymouth

  • City of Plymouth website
  • Phone: 763-509-5950
  • Email: publicworks@plymouthmn.gov

Richfield

  • City of Richfield website
  • Phone: 612-861-9170
  • Email: pwoperations@richfieldmn.gov

Robbinsdale

  • City of Robbinsdale website
  • Phone: 763-531-1202 / 763-531-1220 (after-hours)

Rockford

  • City of Rockford website
  • Phone: 763-477-4346

Rogers

  • City of Rogers website
  • Phone: 763-428-8580 / 763-572-4388 (after-hours)
  • Report an issue in Rogers

St. Anthony

  • City of St. Anthony website
  • Phone: 612-782-3314 / 612-782-3400 (emergency)
  • Report an issue in St. Anthony

St. Bonifacius

  • City of St. Bonifacius website
  • Phone: 952-446-1061 / 952-228-0779 (after-hours)
  • Email: publicworks@st-bonifacius.mn.us

St. Louis Park

  • City of St. Louis Park website
  • Phone: 952-924-2500

Shorewood

  • City of Shorewood website
  • Phone: 952-960-7900
  • Report an issue in Shorewood

Spring Park

  • Spring Park
  • Phone: 763-784-6491
  • Email: info@slpmn.org

Tonka Bay

  • City of Tonka Bay website
  • Phone: 952-474-2947

Wayzata

  • City of Wayzata website
  • Phone: 952-404-5360 / 952-258-5321 (after-hours)
  • Report an issue in Wayzata

Woodland

  • City of Woodland website
  • Phone: 952-474-4755
  • Email: info@woodlandmn.org
Report a roadway problem

Use this form to report potholes, debris/branches on the road, snow and ice issues, and drainage issues. Access the form.

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