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

Waterborne Film

Our latest documentary, Waterborne is now available to watch for free!

View Documentary for Free

Fighting for Drinkable, Fishable, Swimmable Water

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 regional and national issues affecting our water policy and quality of lives.

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

Learn the Issues

Recent News

Action Alert: Please ask Gov. DeSantis to Veto SB 2508

Mar 31, 2022

Join us in asking Florida Governor Ron DeSantis to VETO Senate Bill 2508, which despite various amendments still contains concerning elements harmful to Lake Okeechobee management and several state-wide water quality issues.

DeSantis Urged to Veto Lake Okeechobee Water Supply Bill by Four Environmental Nonprofits

Mar 30, 2022

Four South Florida environmental nonprofits sent Gov. Ron DeSantis a letter Wednesday urging him to veto a controversial Lake Okeechobee water supply bill. The governor can sign or veto the bill, but if he does nothing, it becomes law on July 1.

Words from the Waterkeeper, Episode 33

Mar 28, 2022

John Cassani brings us up to speed on the latest water quality issues in our region including the monitoring of tapegrass renewal exclosures and the efforts of local organizations to restore this important marine vegetation in the upper estuary of the Caloosahatchee.