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The following is a selection of resources for those seeking more information on collaborating with other MS4 permittees for permit compliance.

DEP does not require that MS4 permittees work together. However, an economy of scale can be improved by pooling resources to achieve goals and meet permit requirements. Collaboration can be any form of team effort to satisfy MS4 responsibilities. This can include working together on MCMs, developing and implementing cooperative plans, ensuring consistency in local stormwater ordinances, and establishing joint permits.

To make collaboration work, someone or an entity needs to serve as a focal point – as the “glue” - for that community. Examples include an individual, an MS4 permittee, authorities, county conservation districts, and planning commissions.

Outside groups like watershed or environmental organizations can be very helpful in providing resources and ideas when they have a goal parallel to yours.

MS4 permittees who rely on a joint TMDL Plan and/or PRP must include an agreement executed between the parties. A recommended collaboration agreement outline is available:

You don’t have to go it alone. Other parties are out there who can help you with meeting your MS4 requirements.

Links to resources outside of DEP's website do not necessarily constitute an endorsement.

Plan Collaboration

  • York County (40+ municipalities working on joint CB PRP)
  • Berks County MS4 Steering Committee (8 municipalities)
  • Wyomissing Creek Watershed Coalition
  • Spring Creek Watershed MS4 Partners
    Partners include: College Township, Ferguson Township, Harris Township, Patton Township, Penn State, State College Borough
  • Logan Township, Blair Co (MCM 1 & 2)
  • Wyoming Valley

Permit Collaboration

  • Lycoming County MS4 Coalition
    Coalition includes: City of Williamsport, Borough of Duboistown, Borough of Montoursville, Borough of South Williamsport, Fairfield Township, Hepburn Township, Loyalsock Township, Lycoming Township, Old Lycoming Township, Pennsylvania College of Technology