There are 40 beaches closed across Massachusetts on Sunday, Aug. 10.

Most beach closures are due to excessive bacterial levels, according to the state Department of Public Health .

One of those is the main beach at Walden Pond State Reservation, which will remain closed for the entirety of summer 2025 as a new, state-of-the-art $6.1 million bathhouse is constructed. Red Cross Beach at Walden Pond will remain open, but without lifeguards.

Here is the list of closed beaches:

Chelmsford: Freeman Lake due to bacterial exceedance and harmful cyanobacteria bloom

Concord: Walden Pond due to construction

Danvers: Sandy Beach due to bacterial exceedance

Dartmouth: Moses Smith Creek due to bacterial exceedance

Georgetown: American Legion Park due to bacterial exceedance

Harwich

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