Illicit Discharge Detection & Elimination Program
The Environmental Protections Agency (EPA) nationally regulates the discharge of storm water runoff that is transported into local water bodies through Municipal Separate Storm Sewer Systems (MS4) that are located in Urbanized Areas (also known as “Regulated Areas”) . The Town of Danvers meets EPA’s regulatory threshold, and therefore is required to obtain coverage under a National Pollutant Discharge Elimination System (NPDES) permit for its storm water discharges from the MS4 in its Urbanized Area. In Massachusetts, the EPA Region 1 and the Massachusetts Department of Environmental Protection (MassDEP) jointly administer the municipal storm water program and authorize Danvers to discharge storm water under the NPDES General Permit for Storm Water Discharges from Small Municipal Separate Storm Sewer Systems, known as the “Small MS4 General Permit”. The permit was first issued in 2003 and an updated permit was issued in 2016. Under this program, the Town has developed and implemented a Stormwater Management Program (SWMP) to reduce the contamination of storm water runoff and prohibit illicit discharges. The Small MS4 Program contains six elements called minimum control measures (MCM’s) that when implemented, should result in a significant reduction in pollutants discharged into receiving waters. The MCM’s are:
- Public Education and Outreach,
- Public Involvement and Participation,
- Illicit Discharge Detection and Elimination (IDDE),
- Construction Site Storm water Runoff Control,
- Post-Construction Storm water Management, and
- Good Housekeeping and Pollution Prevention.
Once implemented, the IDDE Program described herein will satisfy the requirements under the Small MS4 General Permit.