Sierra Club Connecticut is the state chapter of the oldest and most influential environmental organization in the nation. Our staff and volunteers work tirelessly to promote our mission here in the state.

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. We seek to engage with, listen to, and amplify the voices of residents and allies from environmental justice communities that suffer the burden of air and water pollution and climate disruption.


How we fulfill this vision:


  1. Fight for clean and healthy communities for all people in the state

  2. Promote clean air, land, and water

  3. Fight systemic and environmental racism

  4. Fight to end fossil fuel expansion, especially fracked gas

  5. Promote clean energy for all

  6. Promote clean transportation for all

  7. Promote Zero Waste policies

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

  9. Protect and enhance our democracy here in the state

  10. Protect wildlife in Connecticut and around the world

  11. Help guarantee justice for all

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


We have 11,000 members and over 40,000 supporters here in the state. The environment is an important issue to our citizens and we are dedicated to make sure that our elected officials and business community value it just as much.

To become a monthly donor, click here 


To donate to the Chapter click here


To join click here.


For more information on volunteering click here


To see the issues we are working on click here


As you navigate through this website you will learn more about the Connecticut Chapter of the Sierra Club, and the challenges we and the environment face locally and throughout our nation. If you feel as strongly about the Planet as we do, join us and/or donate to our cause to help explore, enjoy and protect Connecticut and its natural environment. Help us lead the fight against fools who would throw away all we honor and respect.

Contact Us!

connecticut.chapter@sierraclub.org | (860) 578-4750 | PO Box 270595, West Hartford, CT 06127