How to Spot Signs of Illicit Discharges in Stormwater
June 19, 2025Listed in Stormwater Management
Stormwater systems are designed to carry rainwater; not wastewater, chemicals, or other pollutants. When something other than rain or snowmelt ends up in the storm drains, it's called an illicit discharge, and it can cause serious harm to local waterways, ecosystems, and even public health. For highway departments, especially those operating under MS4 (Municipal Separate Storm Sewer System) requirements, being able to identify signs of illicit discharge is essential. Here’s what to loo…continue