The Mattapoisett Land Trust, founded in 1974, preserve land to enrich the quality of life for present and future generations of Mattapoisett residents and visitors. Currently the MLT protects over 900 acres with forests, meadows, wetlands, salt marshes, vernal pools, beaches and barrier islands.
The Friends of the MAttapoisett Rail Trail is an all-volunteer organization that was founded in 1999 with the purpose of advocating and promoting the completion of Mattapoisett's portion of the federally funded South Coast Bikeway.