Stormwater runoff is generated when rain and melting snow flows over land or impervious surfaces and does not percolate into the ground. As the runoff flows over the land or impervious surfaces (paved streets, parking lots, and building rooftops), it accumulates debris, chemicals, sediment or other pollutants that could adversely affect water quality if the runoff is discharged untreated.
Water that goes into storm drains is not treated in any way before it reaches our waterways. As a resident of Upper Merion Township, you can do your part to help reduce stormwater contamination:
- Minimize use of fertilizers and sweep up anything left on sidewalks, driveways and roads.
- Never pour anything into storm drains.
- Turn your yard waste into useful compost.
- Direct downspouts to grassy or non-paved areas.
- Check for leaks from your cars engine and recycle motor oil.
- Wash your car at a car wash instead of in your driveway.
- Clean up all pet waste.
WHAT IS MS4?
In 2003, Upper Merion Township became a Small Municipal Separate Storm Sewer System (MS4) under the Pennsylvania Department of Environmental Protection (PaDEP) NPDES General Permit regulations.
These regulations enabled Upper Merion Township to establish a Storm Water Management Program. This protocol provides the municipality with guidelines to design a program, which addresses PaDEP’s six Best Management Practices (BMPs) also known as minimum control measures (MCM).
These six (MCM) are designed to reduce the discharge of pollutants from MS4s to the maximum extent practicable, to protect water quality, and to satisfy the appropriate requirements of the federal Clean Water Act.
The six MCM categories are:
- Public Education & Outreach Control
- Public Participation & Involvement Control
- Illicit Discharge Detection & Elimination Control
- Construction Site Stormwater Runoff Control
- Post-Construction Stormwater Management in New Development & Redevelopment
- Pollution Prevention and Good Housekeeping for Municipal Operations and Maintenance
For more information on the storm water and the MS4 program please visit: http://www.portal.state.pa.us/portal/server.pt/community/stormwater_management/21377
STORMWATER INFORMATION FOR RESIDENTS
STORMWATER INFORMATION FOR CONTRACTOR/COMMERCIAL INDUSTRY
PUBLIC EDUCATION, INVOLVEMENT AND PARTNERSHIP
FUN FILLED ACTIVITIES FOR CHILDREN
EPA FACT SHEETS