Harmful cyanobacterial bloom advisories in Massachusetts current as of October 13, 2021

This list includes waterbodies that have been reported to DPH by local, state and federal partners that manage or regulate the respective waterbody.

Updated: Oct. 13th, 2021, 6:15 am
  • Hills Pond, Arlington
  • Hopkinton Reservoir, Ashland/Hopkinton
  • Long Pond Marstons Mills, Barnstable
  • Cliff Pond, Brewster
  • White Pond, Concord
  • Waushakum Pond, Framingham
  • Lake Cochituate (Middle Pond), Framingham, Natick, & Wayland
  • Lake Cochituate (North Pond), Framingham, Natick, & Wayland
  • Lake Cochituate (South Pond), Framingham, Natick, & Wayland
  • Indian Head Pond, Hanson
  • Plunkett Reservoir, Hinsdale
  • Laurel Lake, Lee/Lenox
  • Santuit Pond, Mashpee
  • Cutler Park, Needham
  • Triangle Pond, Northampton
  • Big Sandy Pond, Plymouth
  • Clear Pond, Plymouth
  • Ezekiel Pond, Plymouth
  • Micajah Pond, Plymouth

Please note: This should not be considered a complete list of all advisories in Massachusetts. This list includes waterbodies that have been reported to DPH by local, state and federal partners that manage or regulate the respective waterbody. If you think an algal bloom may be present you are encouraged to avoid contact with the water — WHEN IN DOUBT, STAY OUT! To see examples of what algae blooms look like, please visit the Identifying cyanobacterial blooms and scums page.

Feedback