Mosinee, WI Environmental Rules: Stormwater Management (2026)
Key Facts
- Governing permit
- Wisconsin DNR WPDES stormwater permit
- Enforcing agency
- City administrator or public works director
- Appeal window
- 30 days to the board of appeals
- Forfeiture range
- $100.00 to $5,000.00 per violation
- Adopted by
- Ordinance No. 2009-03, March 30, 2009
Summary
Mosinee regulates non-stormwater discharges into its municipal storm sewer system under Code of Ordinances Sec. 68-31, adopted to comply with its WPDES permit from the Wisconsin DNR. Section 68-41 bans illegal discharges and illicit connections, and violators face a forfeiture of $100 to $5,000 per violation, with each day counted separately.
The purpose of this article is to provide for the health, safety, and general welfare of the citizens of the City of Mosinee through the regulation of non-stormwater discharges to the storm drainage system to the maximum extent practicable as required by federal and state law. ... No person shall discharge or cause to be discharged into the municipal storm drain system or waters of the state any materials, including but not limited to pollutants or waters containing any pollutants that cause or contribute to a violation of applicable water quality standards, other than stormwater. ... Any person that has violated or continues to violate this article shall be subject to a forfeiture of not less than $100.00 nor more than $5,000.00 per violation; each day such violation exists shall be deemed a separate violation.
Full Breakdown
Chapter 68, Article II of the Mosinee Code of Ordinances, added by Ordinance No. 2009-03 in 2009, establishes the City of Mosinee's stormwater illicit discharge detection and elimination program to meet its Wisconsin Pollutant Discharge Elimination System (WPDES) permit. Section 68-31 states the article's purpose: regulating non-stormwater discharges into the municipal separate storm sewer system (MS4) to the maximum extent practicable as federal and state law require. Section 68-41(a) bars discharging anything other than stormwater into the storm drain system or waters of the state that would violate water quality standards, with narrow exemptions for things like water line flushing, air conditioning condensation, dechlorinated pool water and firefighting activity, and it separately bans illicit connections, including any drain conveying sewage into the MS4, in Sec.
68-41(b). The city administrator or public works director, acting as the authorized enforcement agency under Sec. 68-34, can suspend a violator's MS4 access in an emergency under Sec. 68-51, inspect facilities under Sec. 68-53, require best management practices under Sec. 68-54, and issue a notice of violation under Sec. 68-71 that can be appealed to the board of appeals within 30 days. If a violation is not corrected, the city may enter the property to abate it and bill the owner, seek an injunction under Sec. 68-75, or pursue criminal prosecution under Sec. 68-78, which sets the article's forfeiture range.
Violations & Fines
Section 68-78 makes a person who violates or continues to violate the stormwater article subject to a forfeiture of not less than $100.00 nor more than $5,000.00 per violation, with each day a violation continues counted as a separate offense. The city may also recover attorneys' fees, court costs and sampling or monitoring expenses tied to enforcement, and unresolved violations can be summarily abated as a public nuisance under Sec. 68-77.
Frequently Asked Questions
What counts as an illegal discharge into Mosinee's storm sewers?
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What is the fine for a stormwater violation in Mosinee?
Sources & Official References
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Stormwater Management in Nearby Cities
How other cities in Marathon County handle stormwater management.