The Maine General Permit for Stormwater Discharges from Municipal Separate Storm Sewer Systems (Maine MS4 General Permit) was last issued in 2013. Clean Water Act permits, such as this one, are supposed to be re-issued every 5 years. The Maine Department of Environmental Protection has been issuing drafts of the next MS4 General Permit since approximately January of 2018. Eleven (11) drafts have been issued, and many comments have been received and addressed. This page provides copies of some of the most recent drafts and comments.