Wisconsin Stormwater-Municipalities regulations & environmental compliance analysis

Wisconsin Stormwater-Municipalities: What you need to know

Governing Law and Regulations

Wisconsin Administrative Code, Department of Natural Resources (NR) 216.001 to 216.55

For a Limited Time receive a FREE EHS Report "Recordkeeping for EHS Managers." This special report contains a recordkeeping checklist to help you keep track of your records for major environmental laws and OSHA's Hazard Communication Standard. Download Now

Municipalities: NR 216.01 to 216.09

Regulatory Agencies

Wisconsin Department of Natural Resources (DNR) Water Division

U.S. Environmental Protection Agency (EPA) Region 5

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Wisconsin is fully authorized by the U.S. Environmental Protection Agency (EPA) to administer the federal National Pollutant Discharge Elimination System (NPDES) permit program, including for stormwater discharges associated municipal separate storm sewer system (MS4s). The state has generally adopted the federal requirements that apply to MS4s. See the national section STORMWATER—MUNICIPALITIES for more information.

Administration and enforcement. DNR's Water Division is responsible for the administration and enforcement of Wisconsin's stormwater discharge permit rules for MS4s.

State Requirements


NR 216.01 to 216.09

The DNR issues two MS4 general permits: Wisconsin Pollutant Discharge Elimination System (WPDES) General Permit WI-S050075-2 and WPDES General Permit WI-S050181-1. GP WI-S050075-2 covers municipalities that were previously covered under GP WI-S050075-1; GP WI-S050181-1 covers municipalities that are new to the MS4 permit program and not previously covered under GP WI-S050075-1.

Wisconsin MS4 permits include information and education of residential landowners, illicit discharge detection and elimination, creation and enforcement of local ordinances to regulate erosion control, and long-term stormwater management and implementation of pollution ...

Read more about Stormwater-Municipalities