Blue-green Algae in Massachusetts
1 confirmed blue-green algae report in Massachusetts, none currently active. About this disease: symptoms and prevention.
1
Reports on record
0
Currently active
0
Last 7 days
0
Last 30 days
Recent reports
Blue-green Algae
Historical · Aug 20, 2026
Boston
Charles River Lower Basin downstream of the Massachusetts Avenue Bridge (Esplanade side); BPHC advisory 8/20, expanded 8/27 downstream of the BU Center for Computing. Do not let dogs swim or drink. Separate advisory from the July upstream West Roxbury stretch
Source ↗