Bacteria Water

More than 30 beaches closed across Massachusetts day after Fourth of July –

The chance of “pop-up” storms might not be the only reason you change your outdoor plans Friday, it might also be because your favorite beach is closed.

More than 40 beaches in Massachusetts were closed on July 5 mostly because of excess bacteria in the water, according to the state’s public water quality dashboard.

Among the 31 beaches that were closed Friday, 23 were closed because of excess bacteria, as of the 9:30 a.m. update to the dashboard. The remaining eight closures were attributed to harmful cyanobacteria blooms and “other.”

The closures Friday spanned from Western Massachusetts to Eastern Massachusetts to Cape Cod and the Islands. In Great Barrington, Lake Mansfield was closed, though the dashboard listed only “other” as a reason. Lulu Pond in Pittsfield was also closed due to excess bacteria.

In the eastern part of the state, three beaches in Salem — Camp Naumkeag, the back of Children’s Island and Ocean Avenue — were closed. Also on the North Shore, Kings Beach in Swampscott was closed with the dashboard listed only “other” as a reason.

On the Cape, Bucks Creek in Chatham was closed due to excess bacteria, the same reason given for the closure of Colonial Acres West and Windmill Beach in Yarmouth.

“If a beach is closed, do not swim or enter the water at that location to avoid risk of illness,” the dashboard warns.

The dashboard is updated twice a day, once in the morning and once in the afternoon, and shows the results of recent water quality tests at beaches across the state. More than 1,100 public and semi-public beaches in the state are regularly monitored.

And despite the closures, state officials say the beaches are still perfectly safe for recreational activities aside from swimming.

The full list of closures is below. If you can’t see the chart, click here.