Please note this form is for members of the public to notify DEP of a complaint or concern about MS4 Construction / Post-Construction Program. DEP is implementing an NYC'S Stormwater Permitting and Tracking System (Portal) to assess and inspect facilities in the MS4 area of the City to ensure compliance with a New York State Department of Environmental Conservation permit. The purpose of this program is to reduce pollution in stormwater runoff. If you have a complaint that is not related to this program, please visit nyc.gov/311. View DEP’s Terms of Use and Privacy Policy.