A.
The Federal Clean Water Act's National Pollution Discharge Elimination System (NPDES) Phase II permit program and the Virginia Pollution Discharge Elimination System (VPDES) govern discharges into municipal separate storm sewer systems (MS4s), including the City's system. They require that the City effectively prohibit nonstormwater discharges into the system, and require that the City have a plan to detect and address those discharges.
B.
The purpose of this article is to protect water quality by complying with these state and federal environmental regulations.