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Stormwater Management

drinkingwaterInformation and Links:
Pollutant Reduction Plan for Green Lane Reservoir
Rain Drain Brochure
Stormwater/MS4 References and Resources
Perkiomen Watershed


What is the MS4 Storm Water Program ?

Untreated or uncontrolled storm water runoff is the number one cause of impairment in our local waterways. Polluted runoff is often transported through municipal storm water systems where it is eventually discharged into streams untreated. The Environmental Protection Agency (EPA) has established a municipal storm water management program known as the MS4 Program that is intended to improve our Nation’s waters by reducing the quantities of pollutants that storm water picks up and carries into the storm sewer systems during a storm event. As part of the MS4 Program, your municipality holds a permit to discharge their storm water into local waterways. This permit requires the municipality to design a storm water management program that reduces the discharge of pollutants to the maximum extent possible, that protects water quality and that satisfies the water quality requirements of the Clean Water Act. In Pennsylvania, the MS4 program is administered by the Department of Environmental Protection (DEP).
The MS4 storm water management program has six elements termed “minimum control measures” which when implemented should result in significant reduction in pollutants discharged into receiving waters. The six minimum control measures and the actions required by your municipality are outlined below.

1) Public Education and Outreach
Distribute educational materials and conduct outreach to inform citizens about the impacts that storm water runoff has on water quality.

2) Public Participation/Involvement
Provide opportunities for citizens to participate in the storm water management program or other programs which improve water quality.

3 )Ilicit Discharge Detection and Elimination
Develop and implement a plan to detect and eliminate non storm water discharges into the storm water system.

4) Construction Site Runoff Control
Develop, implement and enforce an erosion and sediment control program for construction site activities of that disturb one acre or greater.

5) Post-Construction Runoff Control
Develop, implement and enforce a program to address discharges of post-construction storm water runoff from new development or redevelopment areas.

6) Pollution Prevention/Good Housekeeping
Develop and implement a program that reduces or prevents pollutant runoff from municipal operations

Your municipality is committed to improving water quality in their watershed through better management of storm water runoff. Every resident and business owner can participate in their municipal storm water program by reducing or preventing pollutant runoff from their own property and by reporting any non storm water discharges into their local waterways.