As summer gets into full swing, the people of Toledo, Ohio, begin what has become a disturbing annual ritual—the wait for a toxic algae bloom to erupt across Lake Erie. This year, however, the anticipation may be mixed with hope, as state and federal officials take on this persistent problem.
The harmful blooms have a notorious history. In 2011, toxic algae in the open waters of Lake Erie’s Western Basin were 50 times higher than the World Health Organization limit for safe body contact. That same year, levels were 1,200 times higher than the limit for safe drinking water, according to the U.S. Environmental Protection Agency (EPA). In August 2014, toxic algae shuttered the Toledo, Ohio drinking water treatment plant for several days, leading to advisories against the use of tap water in the city. The bloom also led to warnings for Pelee Island, Ontario residents not to use lake water. In total, more than 500,000 people were impacted. And the summer of 2015 produced the largest algae bloom in Lake Erie in 100 years. While it didn’t reach earlier toxicity levels, the bloom covered 300 square miles.