November 4, 2021

PSA: A note from Fairfax County Department of Public Works and Environmental Services: Only rain down the drain!

Did you know? The Fairfax County storm drainage system, known as the Municipal Separate Storm Sewer System (MS4) carries stormwater to nearby ponds, streams, lakes, and rivers. Please do not dump anything down the storm drains. Do not rake or dump grass clippings or leaves into the storm drainage system. Never dump treated swimming pool water, pet waste, used motor oil, paint, chemicals or other substances into a storm drain. Secure garbage on collection days to avoid litter reaching the stormwater system.

For more information regarding the Fairfax County MS4, please visit

For more information regarding different types of illicit discharges to the MS4, please visit

You, as a homeowner, can help to prevent pollutants from reaching the county’s waterways.

Please remember – only rain down the drain!