Swimming areas at five state parks are closed because of poor water quality and warnings have been posted about blue-green algae at two others.
The swimming areas are closed at Gardner Lake State Park in Salem, Gay City State Park in Hebron, Mashamoquet Brook State Park in Pomfret, Quaddick State Park in Thompson and Wadsworth Falls State Park in Middlefield.
Officials from the state Department of Energy and Environmental Protection said they have posted warnings about cyanobacteria blooms, or blue-green algae, at the beaches at Kettletown State Park in Southbury and Indian Well State Park in Shelton.
Those swimming areas are open, but swimmers should stay away from algae blooms have created greenish patches on the surface of the water.
A similar warning has been posted at the boat launch on Candlewood Lake.
