Beloit, WI Environmental Rules: Stormwater Management (2026)

Chapter 24's Subchapter B, the Illicit Discharge and Connection to Stormwater Sewers ordinance, was created by Ord. No. 33, Wis. , and is administered by the Department of Public Works. 20's findings tie the rule to the Rock River and the City's separate storm sewer system, noting that polluted runoff degrades stream habitat, threatens groundwater and drinking water quality, and undermines floodplain management. 28(1): no person may throw, drain or otherwise discharge, or allow anyone under their control to discharge, any pollutant or water containing a pollutant into the municipal separate storm sewer system (MS4) other than stormwater itself.

28(2) carves out named exceptions, including landscape irrigation, uncontaminated groundwater, firefighting flows, air conditioning condensation, lawn watering and discharges covered by a WPDES or NPDES permit. 28(3) separately bans illicit connections to the MS4, including any drain carrying sewage or industrial wash water, whether or not the connection was legal when it was made; an owner who discovers an undocumented connection must locate and identify it on written order from the Department of Public Works. 28 is the pollution-control side of the same chapter, not the billing side. 31, and industrial or commercial dischargers must keep a written record of the release for at least 7 years.