Our MS4 Program
The objective of the Storm Sewer System (MS4) program is to protect our local waterways by managing stormwater pollutants by implementing six best management practices (BMPs, or minimum control measures (MCMs). The six MCMs are:
- Public Education
- Public Involvement/Participation
- Illicit Discharge Detection and Elimination
- Construction Site Stormwater Runoff Control
- Post-Construction Stormwater Management
- Pollution Prevention/Good Housekeeping for Municipal Operations
Our MS4 program is required and part of the Virginia Pollutant Discharge Elimination System. The program is regulated by the Virginia Department of Environmental Quality.
Documents
- 2022-23 MS4 Program Plan
- Bull Run, Little Bull Run, Broad Run and Occoquan River Bacteria TMDL Action Plan 2022
- Neabsco Creek Bacteria TMDL Action Plan 2022
- Municipal Separate Storm Sewer System Annual Report for 2021-22
- PWCS Tributaries of the Potomac Bacteria TMDL Action Plan 2022
- PWCS Potomac and Anacostia Rivers PCB TMDL Action Plan 2022
- Bull Run Penthic TMDL Action Plan 2022
Please notify/report any suspicious activity regarding the storm drains/waterways to Environmental. If it is an emergency, call 703-791-8805 (PWCS Security Dispatch) or 911, if emergency personnel are needed immediately.