Denver's MS4 stormwater permit and program

The City and County of Denver is regulated under Colorado's municipal separate storm sewer system (MS4) permitting program and implements a Stormwater Quality Management Plan administered by Denver Public Works. The program includes construction site runoff controls, industrial stormwater inspections, and public outreach to reduce pollutants entering the storm drainage system. Permit compliance and stormwater planning are managed through Denver Public Works' stormwater/storm drainage functions.