Running Around Back Cove’s Hidden Pollution Solution
September 9, 2025
Watch our video, a running tour of the hidden tanks under Back Cove keeping stormwater and sewage pollution out of Casco Bay.
Improving and protecting the environmental health of Casco Bay
Please update your records with our new address.
75 West Commercial Street, Suite 301
Portland, ME 04101
Portland, ME 04101
Friends of Casco Bay improves and protects the environmental health of Casco Bay. As home to the Casco BAYKEEPER® we act as the eyes, ears, and voice of the Bay.
We use an integrated approach to tackle the largest threats to the health of our coastal waters,
meeting our mission through science, advocacy, and community engagement. We track the health
of the Bay, advocate to reduce pollution and increase climate resiliency, and engage the public in
our efforts to improve and protect Casco Bay.
How You Can Help
Our Blog
The River to Which We Belong: A Story of the Presumpscot River
August 22, 2025
Intern Leo Kerz explores the story of Presumpscot’s first advocate, Chief Polin, and the long history of people standing up for the waters that sustain us.
What Happened in Augusta: Our 2025 Legislative Roundup
July 22, 2025
PFAS. Rising seas. A busy State House. We showed up with science—and snacks—to make sure Casco Bay had a voice in Augusta.
Meet Our New Board Members
July 8, 2025
We’re thrilled to welcome four new Board members, elected at our July 9 Members Annual Meeting. Each brings valuable experience and a deep commitment to protecting Casco Bay for the future.
Upcoming Events
Summer Cleanups
Introducing Friends of Casco Bay’s new Summer Cleanup Series! All drains lead to the ocean, so let’s clean up our neighborhoods for a cleaner community and a healthier Casco Bay.
Oct 7: Spring Tides. Fall Vibes
Join Water Reporters at East End Beach for the season’s extreme low spring tide to explore what eelgrass, algae, and outfalls reveal about Casco Bay.
Nov 8: Film Fest for Casco Bay
We hope to see you at our Film Fest for Casco Bay, an afternoon of environmental and adventure films curated by Maine Outdoor Film Festival just for us! Plus raffle, food, and drinks.
Our Work
Science
We “listen” to Casco Bay by collecting water quality data, enabling us to identify threats to the health of the Bay. We track water quality year-round from our three Continuous Monitoring Stations, and collect seasonal water samples around the Bay.
Advocacy
Advocating for clean marine water is at the core of our work. Led by our chief advocate, the Casco Baykeeper, our staff and community lend the Bay our voices. We advocate for the health of our coastal waters in town halls and the state legislature, and work with businesses and environmental agencies to promote clean water policies and practices.
Get Involved
The name Friends of Casco Bay was chosen with purposeful intent. It takes a community to care for the Bay. We host events to educate the public on issues affecting the Bay and coordinate volunteer efforts to improve its health. We are proud to say that our volunteers and supporters are among the Bay’s most dedicated ambassadors.
We’re proud members of
