Return to ASDWA's Newsroom

Manure Connected to Lake Erie Toxic Algae

EWG has released a report entitled “Explosion of Unregulated Factory Farms in Maumee Watershed Fuels Lake Erie’s Toxic Blooms’” that suggests that nutrients (and more specifically phosphorus) from expanding dairy, cattle, hog, and poultry operations can be attributed to the growth of harmful algal blooms in Lake Erie. Satellite imaging and aerial photography were used to identify and map these operations in the Maumee River watershed and assess how they have grown.

Click here to access the full report and interactive map. EWG also has an interactive map tracking news reports of harmful algal bloom outbreaks since 2010.