Stormwater is one of the largest sources of pollution into the Bay. In July, we celebrated new protections that will reduce stormwater pollution flowing from Maine’s most urbanized areas. These protections were included in a statewide stormwater permit, called Maine’s MS4 permit, following many years of advocacy by Casco Baykeeper Ivy Frignoca and Friends of Casco Bay.

Casco Baykeeper Ivy Frignoca explains in simple terms what Maine’s MS4 permit does and why it is a big deal for Casco Bay.