Working with you
to keep Casco Bay blue

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We’re hiring a part-time Administrative Assistant to join our team! (more info)

Friends of Casco Bay's new offices at the Portland Star Match building
Friends of Casco Bay’s new offices at the Portland Star Match building.

Our address has changed!

Please update our address to:

Friends of Casco Bay
75 West Commercial Street, Suite 301
Portland, ME 04101

Friends of Casco Bay improves and protects the environmental health of Casco Bay. 


Our areas of work are:


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 from 24 locations around the Bay. 


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

Community Engagement

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.


Get to know us. Read our stories.

Bubbles for Casco Bay graphic with and overhead view of fancy green glasses.

Bubbles for Casco Bay

June 11, 2024

Après is creating a custom seltzer inspired by Casco Bay! For every 16 oz pour and 4 pack of this special hard seltzer sold, a donation to Friends… Read more

Water Reporter Trainings

June 11, 2024

We are thrilled to announce that our brand new, Friends of Casco Bay-designed-and-branded, Water Reporter app is here and ready to use!  We are offering two training… Read more

Making Waves for a Healthier Casco Bay: A Legislative Recap

May 30, 2024

Every year, Friends of Casco Bay spends time at the State House working to help pass laws that make Casco Bay healthier and safer. We… Read more


Friends of Casco Bay’s Successes



How you can help:


Photograph by Kevin Morris


Photograph by Dave Dostie

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Cover photo: Photograph by Kevin Morris