Algae

Texas A&M AgriLife

The Department of Environmental Services has been issuing more warnings than it usually does at this point in the summer for algal blooms, potentially toxic mats of cyanobacteria.

But David Neils, chief water pollution biologist at the department, says that uptick is partly caused by an increase in public awareness.

“People are becoming educated about cyanobacteria, so they’re looking for them more often, and call us more often.”

Some of those blooms that residents call DES about are small or nontoxic, but the department issues a warning just to be safe. 

USGS website

Cyanobacteria advisories are in place at Elm Brook Park beach in Hopkinton and Silver Lake State Park Beach in Hollis. 

State officials are urging visitors to stay out of the water if they observe blue-green scum or clumps suspended in the water column. Cyanobacteria can be toxic to both humans and dogs.