Storm Water Management

Discharging to Surface Waters
Federal regulations issued in 1999 establish a new permit requirement for discharges to surface waters from “Municipal Separate Storm Sewer Systems” (MS4s). This permit is known as the National Pollution Discharge Elimination System (NPDES).
Storm Water
Phase I of this program focused on controlling the quantity of storm water reaching the Township’s water system. The permit requirement applies to “small MS4s” which are designated by either the Environmental Protections Agency (EPA) or the Department of Environmental Protection (DEP). Hampton Township is categorized as a small MS4. Phase II of the program focuses on improving the quality of the storm water reaching the township’s water system.

Permit Requirements Summary
The Phase II Rule defines a storm water management program for a small MS4s as a program composed of 6 elements that, when implemented together, are expected to reduce pollutants discharged into receiving water bodies to the Maximum Extent Practicable (MEP) by using approved Best Management Practices (BMPs).

These 6 program elements, or minimum control measures, are:
  • Construction Site Runoff Control
  • Illicit Discharge Detection and Elimination
  • Pollution Prevention / Good Housekeeping for Municipal Operations
  • Post-Construction Storm Water Management in New Development and Redevelopment
  • Public Education and Outreach on Storm Water Impacts
  • Public Involvement / Participation
Pollutants
The EPA describes the pollution issue as follows:
“Common pollutants include oil and grease from roadways, pesticides from lawns, sediment from construction sites, and carelessly discarded trash, such as cigarette butts, paper wrappers, and plastic bottles. When deposited into nearby waterways through MS4 discharges, these pollutants can impair the waterways, thereby discouraging recreational use of the resource, contaminating drinking water supplies, and interfering with the habitat for fish, other aquatic organisms, and wildlife.”

The article “Storm Water Runoff Can Be Harmful To Streams (PDF)” has been provided by the township’s engineer, as well as several links to government sites, as part of the township’s minimum control measure involving public education and outreach on storm water impacts.