Indian Lake in Worcester will be closed Tuesday for algae treatment, the city announced. Copper sulfate is being added to the lake to “control the growth of harmful, toxin-producing algae,” the city ...

7 lakes in the area have seen blue-green algae blooms in 2015 Main causes are phosphorus pollution, high temperatures and a lack of natural water flow Expert: Pumping septic tanks every 3-5 years can ...