Lake Attitash receives toxic blue-green algae advisory
2012-07-13 15:26:00 -0700
Where: Lake Attitash, Essex, MA, United States
Tests last week confirmed the return of toxic blue-green algae to Lake Attitash in Essex Massachusetts, leading state officials to reinstitute an advisory that the public steer clear of the water.
A water sample taken from the lake on July 3 contained dangerously high concentrations of cyanobacteria, also known as blue-green algae, according to the Lake Attitash Association.
High concentrations of blue-green algae have plagued the lake for much of May and June, but the advisory was lifted late last month after the concentration dropped to acceptable levels.
With the algae's return, the Department of Public Health is once again recommending residents avoid contact with the lake water until the bloom runs its course. The warning also extends to pets. Dogs should not be allowed to come in contact with water containing high concentrations.
That advisory will remain in place until at least July 19. In order for the advisory to be lifted, two consecutive tests must show results below the state guideline. The earliest possible date for that to occur is July 19, the association said.
Officials expects the blue-green algae concentrations to fluctuate for the rest of the summer. According to the Centers for Disease Control, cyanobacterial blooms can form in warm, slow-moving waters that are rich in nutrients such as fertilizer runoff or septic tank overflows. Blooms can occur at any time, but most often in late summer or early fall, following long stretches of hot, dry weather.
Read more about Blue Green Algae (Cyanobacteria) and How it Can Harm Your Dog.