General Overview

The City of Fond du Lac owns and operates a storm sewer system that discharges to the lakes, rivers and creeks in the city. Water from rainfall and snowmelt off of streets, parking lots, roof tops and lawns flows to inlets which convey the runoff to waterways without treatment at the wastewater treatment plant. Pollutants in storm water runoff include: sediment, organic materials, metals, bacteria, pesticides, fertilizer and other substances.

Erosion Control

Construction sites are a major contributor of sediment and other pollutants to waterways. Most construction sites within the City of Fond du Lac are required to install measures designed to limit the amount of sediment leaving construction sites. The ordinance and permit requirements can be found below. To report a problem at a construction site, contact the City of Fond du Lac Engineering Division at (920) 322-3470.

Illicit Discharge

The dumping of car fluids, grass, pet waste, carpet cleaning wash water, power washing water or other non-storm water material into the storm sewer drains is illegal per City of Fond du Lac ordinance and is called an “illicit discharge.” To report an illicit discharge, contact the City of Fond du Lac Engineering Division at (920) 322-3470.

Stormwater Programs

Comments, concerns, or input regarding the Stormwater Programs or Annual Report can be emailed to