AUBURN — For the first time in the state of New York, toxins called microcystin were detected at low levels last summer in the treated drinking water from Owasco Lake. It was the first time they were detected, but maybe not the first time they were present.
Bruce Natale, environmental engineer for Cayuga County, said microcystis blooms, also called blue-green algae or cyanobacteria, have been present in Owasco Lake since at least 1912. They spurred the city, he said, to build its water treatment plant in 1917 and to purchase hundreds of acres in 1918 at the southern end of the lake, now known as the Owasco Flats.
It was a scary answer, Natale admitted, to Seymour Library Director Lisa Carr's question at the Wednesday Morning Roundtable held at the Hilton Garden Inn. Carr wondered whether testing for microcystin was new because of the science available, or new because it was new in the lake.
"It's not a new issue," Natale said. "I think we were one of the first ones to test raw drinking water and treated drinking water for it. I think it's going to be much more widespread in New York this coming summer where we're actually getting detections in drinking water systems. It may have been, it may be happening in low levels at lots of places already. It's one of those times where science has caught up though, and it's going to look like things are getting much worse."
Blue-green algae, also known as cyanobacteria, is a filmy, paint-like scum that has been dis…
Joining Natale to discuss water quality issues in the Finger Lakes were Cayuga County Health Director Kathleen Cuddy and Aimee Clinkhammer, the watershed coordinator for the state Department of Environmental Conservation's Finger Lakes Water Hub. Clinkhammer was the first hire for the hub created in October, and she said the team will likely be complete by the end of next week.
While the harmful algal blooms may have been occurring for more than a century in Owasco Lake, and potentially other lakes in the region, Clinkhammer said they do appear to be getting larger and more toxic. Microcystin is a particularly nasty toxin because it can cause liver and kidney failure as well as reproductive problems. Symptoms can include headaches, vomiting, diarrhea, blistering around the mouth, sore throat, dry cough and pneumonia, according to the U.S. Environmental Protection Agency.
The toxin is not regulated by the EPA, but the federal agency does have a health advisory guideline it recommends, which the state Department of Health and the Cayuga County Department of Health have been referencing for their tests. Cuddy said the department and the state have been even more conservative with testing than the federal standards, and the department has been working with towns and villages on emergency response plans should a "do not drink order" be issued. The city is also working to install a temporary treatment method by the beginning of July, Natale said. Blooms typically begin to appear in late summer when the waters are warmest.
One of the great mysteries about blue green algae, which was one of the first living organisms to inhabit the planet, is what causes a bloom to be toxic. Because it's impossible to tell whether toxins are present without a water quality test, Clinkhammer said the DEC has a blanket recommendation of staying away from all blooms. Part of the effort of the new hub, she added, will be to determine why some blooms have microcystin and others don't.
While the focus of the round table was on Owasco Lake, Natale, Clinkhammer and Cuddy said Cayuga Lake, Lake Ontario and other area water bodies are battling with issues, too. For example, Cayuga Lake is tackling hydrilla, an invasive species once thought to be confined to the southern end of the lake but recently found as far north as the village of Aurora.
When asked what people can do to help take care of their lakes, Cuddy said to get involved. With multiple watershed organizations and multiple public comment opportunities, there are plenty of ways for locals to be good stewards. Besides that, residents can be aware of the fertilizer they use, avoiding those with phosphorous or nitrogen. People can report algae bloom sightings to the Owasco Lake Watershed Inspection Program, and if there are issues on Cayuga Lake, Cuddy said there are DEC hotlines to call and report information.
"You don't have to live along the lake to care about the water," she said. "We know that water is so elemental. We all need to play a role in protecting it."