By Meg Muckenhoupt The Mystic River’s most recent water quality report card, released on August 13, gives Winn’s Brook an F for 2019—and the Little River and Alewife Brook earned Ds. The US Environmental Protection Agency (EPA) creates the  annual report card in collaboration with the Mystic River Watershed Association. It grades segments of the Mystic River’s lakes, river, and streams on how frequently they meet bacterial standards for swimming and boating. The Upper Mystic Lake and the Chelsea River got an A grade; they met boating and swimming standards 90% or more of the time in 2019. Winn’s Brook [READ MORE]