Sewickley Township’s Stormwater Program

Sewickley Township recognizes that storm water is a very important natural resource that provides a source for our drinking water supplies, water for our crops, lawns and gardens, and a replenishment of our streams, ponds and lakes which in turn provide recreation opportunities and enhanced aesthetic value to our community. In order to protect our natural waterways, Sewickley Township has implemented a program to regulate the storm water that is intercepted by its municipal separate storm sewer system, or MS4. This program was initiated by a state-wide mandate for small- to medium-sized communities with MS4s, such as Sewickley Township, to be permitted under the Pennsylvania Department of Environmental Protection’s (PADEP’s) National Pollution Discharge Elimination System (NPDES) Phase II permit program. This webpage provides general information on storm water and on the Township’s MS4 stormwater program.