Storm Water Management

New Federal Stormwater Management regulations require Clay Township to apply for a National Discharge Elimination System (NPDES) permit to discharge stormwater from our Municipal Separate Storm Sewer System (MS4).  Under these regulations, Clay Township is required to control and minimize stormwater runoff impacts resulting from development.  The regulations require stormwater runoff from new land development to be infiltrated and detained on-site in an effort to replenish groundwater aquifers, improve water quality and regulate the peak stormwater discharges from the development site.


Stormwater Management


PA DEP “Stormwater Management Program” webpage

EPA MS4 Program


Information for the General Public

Clay Township MS4 Annual Report

What is a Stormwater Illicit Discharge

Illicit Discharge Complaint Form

Home Owners Guide to Stormwater

10 Things to Reduce Stormwater Runoff

After The Storm Pamphlet

Rain Drain Brochure

Car Washing

Vehicle Oil

Pet Waste

Lawn Fertilizer

10 Things to Reduce Runoff Pollution


Information for Developers and Contractors

 Construction Stormwater Field Guide

Developing your Stormwater Pollution Prevention Plan



Lancaster County Conservation District


Chesapeake Bay Program