Feb 12: Unless Something Goes Terribly Wrong (film)
Friends of Casco Bay is proud to sponsor this screening of a film about Portland’s wastewater treatment plant.
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
Upcoming Events
Mar 5: Coffee with the Casco Baykeeper: Our 2025 Science Report
Explore last year’s data with us and learn how science shapes our advocacy for Casco Bay.
Mar 25: Coffee with the Casco Baykeeper: The PFAS Results are In!
Learn what recent PFAS testing tells us about Casco Bay—from Brunswick results to fish and shellfish samples—and how this science can help guide future action.
Our Blog
Coffee with the Casco Baykeeper: Indigenous Relationships with Water
February 12, 2026
Watch the video: Casco Baykeeper Ivy Frignoca and guest Keyana Pardilla explore Indigenous ways of relating to water and what responsibility and reciprocity can look like for Casco Bay.
A Love Letter from Casco Bay
February 12, 2026
A love letter from Casco Bay to the watershed that sustains it.
Celebrating 10 Years with Ivy Frignoca, Our Lorax of Casco Bay
February 10, 2026
What does ten years of Baykeeping look like? For Ivy Frignoca, it’s meant tackling stormwater, climate change, PFAS, and more—one steady step at a time.
2025 Water Reporter Impact—by the Numbers
December 23, 2025
Every photo tells a story. And in 2025, volunteer Water Reporters across the Casco Bay watershed helped tell an important one.
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
