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Beach closed for swimming, but nobody seems to know

Amy MacNeill enjoys a swim at Shannon Beach. WINCHESTER NEWS STAFF PHOTO/JOYCE WESTNER

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Despite a sign on the bulletin board warning about E. coli bacteria, several beachgoers were enjoying the water on the Mystic Lake’s Shannon Beach. 

Woburn resident Amy MacNeill says, “I had no idea, but I swam in the Charles River, or Horn Pond, or here and I never get sick.” 

Several Winchester nannies were there with their charges on Wednesday, and they also had no idea. One of them said she didn’t see the sign, but usually there’s a flag warning people to stay out of the water.  The variable message sign facing the parking lot says, “No alcohol,” but doesn’t carry any warning. 

Every summer, the state Department of Public Health has to close beaches either for “bacterial exceedance” or “harmful cyanobacteria bloom.” Last summer, Shannon Beach was closed in July for the same reason.  The bacteria are introduced by heavy street runoff after heavy rains.   

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