Storm Water Management

Stormwater management is, regulated by the Clean Water Act and by the Borough’s National Pollutant Discharge Elimination System (NPDES) permits. The NPDES program includes local separate storm sewer systems (MS4s) that serve populations with fewer than 100,000 residents.


Documents for Download

Illicit Discharge


Nps Month Bookmark


Stormwater Management Tip: Keep Drains Clear

The Stormwater system is not designed to remove pollutants from water; it was designed to convey rainwater and snow melt directly to creeks or larger bodies of water. Never dump litter, leaves, animal waste or oil or any other contaminants into stormwater drains. It is a violation of Federal Clean Water Act and citiations will be issued for non compliance.


Additional information are available at:


10 Things That You Can Do to Prevent Storm Water Runoff Pollution (info in PDF)

Make Your Home the Solution to Stormwater Pollution Brochure (Pdf)

Stormwater and the Construction Industry Poster (PDF)

Best Management Practices for Stormwater Management (PDF)

More information about the MS4 program is available from the DEP Stormwater Management Program website.


South Coatesville Borough is required to develop a MS4 stormwater management plan that involves the community through:


Public education and outreach

Public participation and involvement

Illicit discharge detection and elimination

Construction site runoff control

Post-construction storm water management in new development and redevelopment

Pollution prevention and good housekeeping for municipal operations and maintenance

The goals of stormwater management are to:


Reduce the discharge of pollutants

Protect water quality

Satisfy requirements of the Clean Water Act

Anything that goes into a storm sewer goes directly to streams, without being cleaned or filtered at a treatment plant. Residents can help by being careful about using materials that could end up in the stormwater system and by monitoring storm water inlets. Items that can run off into storm drains and cause pollution include:


Pet waste


Sediment from construction sites

Chemical, gas and oil spills


Dumping into the storm sewer system is illegal and dangerous! Call the Borough Office at (610) 384-1700, during business hours if you witness anyone dumping materials into an inlet. Call our local Police Department if you see illicit dumping after hours or on weekends.


For more information on stormwater go to EPA’s stormwater program homepage at:




 Never allow chemicals, detergents construction materials or anything other than water to enter the Borough’s storm water system. For example, if you are doing concrete work, do not pour extra material into the street. These materials eventually enter our streams.

Keep your worksite neat. Loose trash, gravel, or other building materials can find their way into the street and eventually be washed into the storm sewer system.


Stormwater Management Resources


Pennsylvania Environmental Council

Department Of Environmental Protection

Stormwater Program

NPDES Permit Program Basics

Stormwater Outreach Materials and Reference Documents

National Menu of Stormwater Best Management Practices

Chester County Household Waste Collection Dates