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The Sierra Club is the most enduring and influential grassroots environmental organization in the United States. We amplify the power of our 3.8 million members and supporters to defend everyone’s right to a healthy world.


Today, there are serious challenges ahead: a warming climate, unprecedented levels of pollution, and powerful special interests undermining basic protections. There’s no time to waste in coming together for new solutions—which is why the Sierra Club is bringing people together to build the most powerful and effective environmental movement the world has ever seen.

Founded in 1972, The Connecticut Chapter of the Sierra Club is the state-level branch of the organization, and currently has more than 30,000 members and supporters.


Our mission is to advocate for and protect the resources of our state, from the waters of the Long Island Sound, to our hundreds of miles of coastal areas, to our forested upland hills, and the flora and fauna that occupy these places and the spaces in between. We are also advocates for and defenders of the people of Connecticut. We seek to make Connecticut a more equitable state by working alongside and organizing with communities most adversely affected by fossil fuel energy infrastructure, waste incinerators, and other polluting industries.

Our goals:

  • Solve the climate crisis primarily through a successful transition to a resource-efficient clean energy economy that better serves people and nature;

  • Secure protections for public lands and waters, promote healthy ecosystems and communities, and fight for clean air and water;


  • Expand opportunities for more people to explore, enjoy, and protect the planet by supporting programs and policies that reach across economic, cultural, and community lines to get people outdoors; and


  • Build a diverse, inclusive environmental movement that reflects and represents today’s American public, and prioritizes important connections between environmental health and social justice.

How We Will Fulfill This Vision:


  • Fight for clean and healthy communities for all people in the state

  • Promote clean air, land, and water

  • Fight systemic and environmental racism

  • Fight to end fossil fuel expansion, especially fracked gas

  • Promote clean energy for all

  • Promote clean transportation for all

  • Promote Zero Waste policies

  • Protect open space and help to guarantee access to public lands is equitable

  • Protect and enhance our democracy here in the state

  • Protect wildlife in Connecticut and around the world

  • Help guarantee justice for all

  • Explore and enjoy the natural beauty of our state through Outings and Inspiring Connections Outdoors programs.

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