Health, Science & The Environment
12:19 pm
Mon October 15, 2012

Algae Treatment at Grand Lake Isn't Working

A two-year, $8.5 million project to stop toxic algae in Ohio's largest inland lake isn't working.
 
The 13,000-acre Grand Lake St. Marys in western Ohio was sprayed with aluminum sulfate in April that was supposed to keep the blue-green algae from feeding on phosphorous in the water. A similar treatment was applied last year.

The Columbus Dispatch reports that this year's treatment was spoiled by high winds that helped stir phosphorus-rich mud from the lake bottom.

A report due in December is expected to raise questions about whether the state will fund a third treatment.

Toxic algae grow thick feeding on phosphorus in manure, sewage and fertilizers that rains wash into nearby streams. They produce liver and nerve toxins that can sicken people and kill pets.