30th Anniversary Celebration

Join Us for Calusa Waterkeeper’s 30th Anniversary Celebration on January 24th, 2025.

Who We Are

Calusa Waterkeeper is guided by science to protect our water quality and human health. We fill a unique niche in Southwest Florida and would value your support!

Learn More

Watkins Transformational Leadership Fund

Join us in establishing this endowment to perpetually support Calusa Waterkeeper’s water quality programs and advocacy efforts in Southwest Florida.

Invest Today

Fighting for Drinkable, Fishable, Swimmable Water

Volunteer Hours and Counting

Since 1995

Calusa Waterkeeper is a non-profit organization dedicated to the protection of the Caloosahatchee River & Estuary in Southwest Florida. This includes Lake Okeechobee & Estero Bay, plus the near-shore waterways of Lee County. We strive to achieve this mission through education and promotion of responsible use and enjoyment by all people.

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Thank you for all that you’re doing to improve our water quality and to educate us on changes we ourselves can make to help.

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Vicky C.
Cape Coral

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I have come to value the work of the Calusa Waterkeeper and its important voice in our community advocating for cleaner water. Keep up with the good work!

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Stephen B.
Clewiston

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We appreciate all that you do for our community and water quality. Great Job! Thank you, The Jensens.

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Jensen’s Marina
Captiva

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Thank you Calusa Waterkeeper and John Cassani for all you do to educate the public about the water quality crisis we are facing in SWFL.

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Denny S.
Fort Myers

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Thanks to CWK for relentlessly using science and public outreach to fight for clean water in SW Florida! We all benefit.

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Gerri R.
Fort Myers

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I have learned so much as a volunteer Ranger with Calusa Waterkeeper. Excited to continue!

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Mark D.
North Fort Myers

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Happy to renew our membership and keep you on the front lines. Thank you for all you do.

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Scott & Christine M.
Cape Coral

Explore the Issues

Waterways around the world are under attack by pollution and mismanagement. Southwest Florida is no different.

Calusa Waterkeeper is focused on several local action items as well as state and national policies affecting our waters and quality of life.

We think you’ll agree, these are causes worth fighting for.

Learn the Issues

Recent News

Red tide showing up offshore, fecal indicator bacteria counts high after hurricanes

Oct 31, 2024

“We didn’t have a single site that passed the swimming beaches threshold of 70, so my main takeaway is there is a clear indication that we have a problem,” Pierce said. “We’re a first-world country living with third-world water quality problems.”

Fecal bacteria could still be high in creeks, rivers after Helene.

Oct 7, 2024

Avery is part of a small army of volunteers who scour Lee County creeks and rivers in hopes of better understanding pollution in the various watersheds, and they’ve been out in droves over the past week trying to capture a snapshot of local water quality after Hurricane Helene stirred local waters and flooded island communities.

Calusa Waterkeeper To Host Manuel’s Branch Neighborhood Water Quality & Human Health Event

Sep 10, 2024

In an effort to keep children and families informed of troubled waters in Manuel’s Branch and other local waterbodies, Calusa Waterkeeper is hosting a Water Quality & Human Health Public Meeting on Tuesday, October 15, 2024, from 5:30 PM to 7:00 PM.

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