Ohio begins big assault on algae in polluted lake

CELINA, Ohio (AP) — Ohio is beginning an aggressive attack on toxic algae that spoiled last summer’s tourism at the state’s largest inland lake.

Beginning today, most of Grand Lake St. Marys will be sprayed with about 3.3 million gallons of alum in hopes it can neutralize phosphorous in the water, which feeds the blue-green algae.

Ohio Environmental Protection Agency Director Scott Nally tells The Lima News the $3.4 million operation is expected to continue through the end of June at the lake, between Dayton and Toledo.

Officials say high phosphorous levels were created by manure and chemical runoffs.

Toxic algae has been found on the lake again this year. Last summer, it prompted warnings against swimming, boating and fishing.