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

Advocates Push for Fixes as Critically Important Seagrass Continues to Vanish

Apr 29, 2022

When legislation that would have let developers destroy seagrass in exchange for mitigation credits died with Florida’s 2022 session last month, many environmental advocates were relieved. What Calusa Waterkeeper John Cassani wants to know; “If water quality decline underlies seagrass loss, then why would continual planting change anything?”

Advocates Working to Change the State Constitution to Ensure Floridians have a Right to Clean Water

Apr 22, 2022

A group of clean water advocates has announced a drive to get the “Right to Clean and Healthy Waters” added as a state constitutional amendment on the 2024 ballot. To qualify, the amendment needs 891,589 signed and verified petitions.

Calusa Waterkeeper Finds High Levels of Bacteria in Billy’s Creek

Apr 20, 2022

Billy’s Creek isn’t clearing up after years of problems. The Calusa Waterkeeper says there’s a high level of contamination in areas known for being a health concern. Every time anyone touches this polluted water they’re at risk.