Public Works and Environmental Services

CONTACT INFORMATION: Our administrative offices are open 8 a.m. – 4:30 p.m., Mon - Fri
703-324-5500 TTY 711
12000 Government Center Parkway
Suite 449, Fairfax, Va 22035
Joni Calmbacher
Director, Stormwater Planning

MS4 Program Plan and Annual Reports

cover of MS4 reportTo meet the requirements of the Clean Water Act and subsequent Virginia Pollutant Discharge Elimination System and Municipal Separate Storm Sewer System (MS4) permits, the following annual reports contain detailed information on the accomplishments of the county's comprehensive stormwater management program and the efforts of relevant organizations in:

  • Protecting property from damage;
  • Managing the quantity of stormwater runoff;
  • Monitoring and managing the quality of stormwater runoff; and
  • Educating and involving the residents and businesses of the county, not only in environmentally friendly ways to deal with stormwater, but also in its adverse effects on streams.

2023 Program Plan and Annual Report

2023 Full Report (MS4 Program Plan and Annual Report with Appendices)

For more information on the county's MS4 Permit and Annual Reports, please email the Stormwater Planning Division or call 703-324-5500, TTY 711.

Fairfax Virtual Assistant