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Nearly 60 beaches closed this weekend due to bacteria and algae

See if your favorite Massachusetts beach is on the dreaded list this weekend.

A woman walks on Tenean Beach in Dorchester. David L. Ryan/Globe Staff

Nearly 60 Massachusetts beaches are closed ahead of a beautiful weekend with temperatures rising into the 80s. 

As of Friday night, 58 beaches across 36 towns are closed to swimmers due to dangerous bacteria levels and blue-green algae blooms, according to the Massachusetts Department of Public Health’s (DPH) interactive beach water quality dashboard. The closed beaches include both freshwater and ocean shorelines. However, the majority of closures are at freshwater ponds—only about 10 ocean beaches are closed. 

The number of beach closures has nearly doubled since last month, up from 31 on July 25. 

Under state law, local health departments must monitor bacteria levels at more than 1,100 public and semi-public beaches across Massachusetts. They test daily or monthly, depending on each beach’s risk for water quality issues.

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According to the DPH, bacteria levels can increase after heavy rain or from sources such as failing septic systems, sewer overflows, animal waste, and agricultural runoff.

For health and safety reasons, experts advise against swimming in or going near beaches that have been ordered closed due to high bacteria levels and algae blooms. Coming in contact with contaminated water can cause illness, including stomach distress, cold-like symptoms, skin irritation, or eye and ear problems. Children, older adults, and people with weakened immune systems are at higher risk for serious illness.

During beach season, the dashboard is refreshed every hour between 8 a.m. and 5 p.m., seven days a week.

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The list below reflects the latest info as of 8 p.m. on Friday, Aug 22.

Massachusetts beach closures as of Friday, August 22, 2025

Amesbury

  • Glen Devin Condominiums

Beverly

  • Woodbury

Billerica

  • Nutting Lake – Micozzi Beach @ North
  • Nutting Lake – Micozzi Beach @ South

Boston

  • Tenean (DCR)

Braintree

  • Smith Beach

Chicopee

  • Chicopee Beach (DCR)

Concord

  • Walden Pond – Main (DCR)

Danvers

  • Sandy Beach (Danvers)

Essex

  • Centennial Grove

Franklin

  • Chilson Beach

Framingham

  • Saxonville Beach
  • Learned Pond Beach

Georgetown

  • American Legion Park

Harwich

  • Seymour Pond

Holliston

  • Pleasure Point
  • Stoddard Park

Holden

  • Eagle Lake

Lynn

  • Kings (DCR) @ Eastern Ave.
  • Kings (DCR) @ Kimball Rd.
  • Kings (DCR) @ Pierce Rd.

Mashpee

  • Santuit Pond @ Bryants Neck
  • Santuit Pond @ Town Landing

Natick

  • Memorial Beach (Dug Pond) @ Wading
  • Cochituate State Park Beach (DCR)

Nantucket

  • Sesachacha Pond

New Marlborough

  • York Lake Beach (DCR)

North Andover

  • Stevens Pond – Center
  • Frye Pond Beach (DCR)

Oxford

  • Carbuncle Pond

Quincy

  • Merrymount
  • Wollaston @ Channing Street (DCR)
  • Wollaston @ Milton Street (DCR)
  • Wollaston @ Rice Road (DCR)
  • Wollaston @ Sachem Street (DCR)

Revere

  • Short (DCR)

Salem

  • Children’s Island – Back
  • Children’s Island – Wally
  • Ocean Avenue

Saugus

  • Pearce Lake @ Breakheart Reservation (DCR)

Sharon

  • Community Center Beach

Southwick

  • South Pond Beach

Springfield

  • Bass Pond @ Right
  • Paddle Club @ Right
  • Camp Wilder @ Right

Townsend

  • Pearl Hill Pond Beach (DCR)

Tisbury

  • Hilman’s Point

Wareham

  • Shangri-La

Webster

  • Memorial Beach (Webster) @ Location 1
  • Memorial Beach (Webster) @ Location 2
  • Lakeside

Winchendon

  • Lake Dennison State Park (DCR) @ North Camp Beach
  • Lake Dennison State Park (DCR) @ Day Use Beach

Winthrop

  • Donovans
  • Halford
  • Winthrop Beach (DCR)

Wilmington

  • Wilmington Town Beach @ Center
  • Wilmington Town Beach @ Right
Profile image for Morgan Rousseau

Morgan Rousseau is a freelance writer for Boston.com, where she reports on a variety of local and regional news.

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