Lake Garfield Cyanobacteria Reports

Lakes and Ponds Association of Western Massachusetts, LAPA - West, has been tasked with sampling Lake Garfield for cyanobacteria. Cyanobacteria, also known as blue-green algae, are naturally present in lakes but can become a health concern when levels rise. The Massachusetts Department of Public Health considers a total cell count of 70,000 cells/mL or more a potential risk for recreational use. Some common species—Microcystis, Dolichospermum, and Woronichinia—can produce toxins, though not all blooms are toxic. Microcystis is the most frequently associated with harmful blooms, especially when cell counts exceed 20,000 cells/mL. Toxins like microcystin can be harmful above 8 parts per billion (ppb), and Cylindrospermopsin is concerning above 24 ppb. The Town continues regular testing to ensure water quality remains within safe limits for recreation.