Blue-Green Algae Advisory Lifted For Slack Reservoir

SMITHFIELD, RI — Slack Reservoir is clear of dangerous toxins caused blue-green algae blooms, the Rhode Island Department of Environmental Management announced Friday. Recreational activities are again allowed in Smithfield and Johnston.

While the blue-green algae is still present in the water, it is at acceptably low levels and no cyanotoxin, which causes illness, is detectable. As a result, the advisory has been lifted.

Blue-green algae blooms can change quickly, the department said, and could come back in Slack Reservoir or other bodies of water in the state. The public is advised to avoid contact with water that has a bright green appearance or a thick, floating mat of algae on the surface. Blooms can look like bright green paint or thick pea soup. Even after the algae is no longer visible, the toxins may still be in the water. Report suspected blue-green algae blooms to the DEM, with pictures if possible, to DEM.OWRCyano@dem.ri.gov.