Candlewood Lake is the largest lake in Connecticut. The CLA was established to provide shoreline and watershed management to foster the preservation and enhancement of recreational, economic, scenic, public safety and environmental values of the lake for the City of Danbury and the Towns of Brookfield, New Fairfield, New Milford and Sherman in cooperation with the State of Connecticut and FirstLight Power Resources, the power generation company that owns the lands under and around the lake.

The Lake Waramaug Task Force is a non-profit organization of volunteers and scientists that provides leadership in restoring and maintaining the ecology and water quality of Lake Waramaug and its watershed.

The mission of the Task Force is to work with leading lake scientists to conduct research toward the best possible restoration and management solutions; operate three in-lake restoration systems which restore the natural balance of the lake's ecosystem by removing or isolating harmful nutrients; and by improving the habitat for cold water fish and beneficial zooplankton; and prevent invasive aquatic species from entering the lake under a comprehensive inspection, monitoring, education and emergency-response program.

The Bantam Lake Protective Association provides important information relative to its community, environment, and administration of that association that strives to protect the health of the largest natural lake in the State of Connecticut.

The Lake Lillinonah Authority is funded by the towns of Bridgewater, Brookfield, New Milford, Newtown, Southbury, and Roxbury to oversee environmental, safety and recreational needs of Lake Lillinonah.

It is the Mission of the CRYSTAL LAKE ASSOCIATION OF ELLINGTON, CT, to inform everyone of the issues and news pertaining to Crystal Lake and the surrounding watershed.

The Quaddick Lake Association was formed in 1980 to address the needs of the homeowners and residents of the lake as well as others who enjoy Quaddick Lake's tree-lined views, swimming in its cool reservoir and boating & fishing on its nearly 2 miles of open water. The Association is a non-profit organization that obtains its operating budget through membership dues. This budget is supplemented with member donations and project specific grants from organizations, like the Connecticut Department of Environmental Protection and the Town of Thompson, aimed at improving the environment and quality of life in the entire lake.

The Hitchcock Lakes are located on Southington Mountain in Wolcott, Connecticut. This private lake community is home to approximately 350 families. The lake property is owned by the Wolcott Land Conservation Trust and managed by the Hitchcock Lake Improvement Association.