Working with you
to keep Casco Bay blue.

Join us at upcoming events

Become a member

We hope to see you this summer.

Join us at one of our upcoming events:

Celebrating the Presumpscot River and the Clean Water Act

Join us for a walk along the Presumpscot River to learn about its history and how the Clean Water Act has been used and will… Read more

Join us for We Are Water

Join us on Wednesday, July 20, 5:30-8 p.m. for our We Are Water event where we will celebrate the 50th Anniversary of the Clean Water… Read more

Nabbing Nitrogen: Join Our Clean Water Act Day of Action!

Join us to Nab Nitrogen in Portland Harbor, on Sunday morning, August 7! You will help us collect water samples around the Harbor to create… Read more

Friends of Casco Bay’s mission is to improve and protect 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.

No Poop in the Bay: Friends of Casco Bay Relaunches Pumpout Program

May 31, 2022

We are excited to announce that we are relaunching our Pumpout Program. After a 2-year hiatus, our pumpout vessel, Headmaster, is back in the water… Read more

Meet our new Executive Director!

May 23, 2022

Will Everitt has been hired as our next Executive Director at Friends of Casco Bay. Will is a familiar face, as he has served as… Read more

We are hiring: Science and Advocacy Associate

May 20, 2022

Science and Advocacy Associate – full time with a comprehensive benefits package Friends of Casco Bay is hiring a Science and Advocacy Associate. This new… Read more

We are hiring: Development Director

May 20, 2022

Development Director- full time with comprehensive benefits package Friends of Casco Bay is hiring a Development Director. The Development Director will work closely with our… Read more

Doggie Do’s and Doggie Don’ts

May 9, 2022

Many of us love our dogs as much as we love Casco Bay. Some dog owners may even love their dogs more than Casco Bay. … Read more

New data, NEW insight

April 14, 2022

Presenting data is like telling a story. When we look at a graph of our water quality data, it tells us a story about the… Read more


Friends of Casco Bay’s Successes



How you can help:


Photograph by Kevin Morris


Photograph by Dave Dostie

Email Sign Up

We’re proud members of


Cover photo: Photograph by Kevin Morris