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Spring Into Summer 2025

Join us on June 4 at the Mark Twain House for our Spring into Summer Celebration. Register today.

May podcast: the Twain House

Mallory Howard joins us to talk about all things Twain

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Mallory Howard from the Mark Twain House joins us for our May podcast.

Join us at the Mark Twain House on June 4 for our Spring into Summer Celebration.

Climate Leader Designation

Celebrating municipalities that are reducing harmful greenhouse gas emissions while saving money, improving public health, and building community.

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Community Match Fund

A fast, flexible program to support sustainability initiatives throughout Connecticut. Get inspired to start your own Community Match Fund campaign by viewing our flipbook of recent projects.

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Participating Communities

View the map of Connecticut’s registered communities. Search the completed actions database.

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Certification Program Statistics

If your municipality is not yet registered with Sustainable CT, or if your town is registered but has not yet considered working towards certification, please contact us. We’d be happy to speak with you, provide any information you may need, and discuss next steps.