Right to Clean Water

Calusa Waterkeeper supports the Right to Clean Water initiative organized by the Florida Rights of Nature Network. Please consider signing the petition and helping collect signatures to have this initiative placed on the 2024 state-wide ballot.

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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

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!

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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

Blue-Green Algae Toxins are a Human Health Risk

Sep 17, 2023

A recent News-Press article (“Well-known FGCU professor accused of downplaying blue-green algae by water advocate”) overlooks the principal barrier to public understanding of Florida’s persistent blue-green algae – the calibration of exposure to risk.

Quiet Disaster: Dapis Algae in Matlacha Aquatic Preserve and Charlotte Harbor

Sep 14, 2023

If you’ve never heard of Dapis algae, you’re not alone. It does not seem to get much airtime but is another damaging form of algae outbreak that continues to plague our coastline, negatively impacting our environment, economy and quality of life.

Using Chemicals to Treat Florida’s Algae Bloom Problem is like taking Aspirin for a Brain Tumor

Sep 14, 2023

Israeli company won a lucrative contract in Florida to use their algaecide to treat blue-green algae blooms in the Caloosahatchee & elsewhere. Concerns have been raised on efficacy and whether or not officials are following the product’s label for application and safety.