ST. MARYS, Ohio – Ohio health officials said at least six illnesses are likely related to polluted water at the state’s largest inland lake.

The Ohio Department of Health said five other reports of water-related illnesses from this summer are still under investigation near Grand Lake St. Marys in western Ohio.

Toxic algae found in the lake has led state officials to warn people to avoid direct contact with the water in the lake, which sits between Toledo and Dayton.

A warning against taking boats into the lake was lifted last month.

The state said there are five projects underway now that they are trying out to clear up the toxic blue-green algae.