Rhode Island health and environmental officials have lifted recommendations to avoid recreation at Johnson's Pond in Coventry and Lake Washington in Glocester.
The agencies said Oct. 21 that the harmful algae blooms had cleared. Recent laboratory tests found low algae levels and no detectable toxins, meeting the state's safety guidelines.
Johnson's Pond is also known as Flat River Reservoir.
Blue-green algae, also called cyanobacteria, can form green scum, floating mats or water that resembles green paint or pea soup. Officials advise keeping people and pets away from water with those conditions. Toxins can remain after a bloom is no longer visible.
Suspected blooms can be reported to DEM.OWRCyano@dem.ri.gov or 401-222-4700, pressing 3 and selecting the Office of Water Resources. The agencies recommend including a photograph when possible and checking the state's cyanobacteria dashboard for current advisories.