The State Health Department is warning people not to swim in a section of Lake Anna in Louisa County because of the dangers of harmful algae.
The swimming advisory issued by the Virginia Department of Health on Friday impacts the upper waters of the North Anna arm, including the “Sandbar” of the lake, and downstream to the Route 522 Bridge.
The swimming advisory impacts the upper waters of the North Anna arm, including the “Sandbar” of the lake, and downstream to the Route 522 Bridge.
According to a press release: “Results of samples collected 6/17/24 contained cyanobacteria concentrations that pose a public health concern. “Microcystin, a cyanotoxin, was detectable but below levels which pose a health risk. Three other cyanotoxins were below detectable levels.”
Cyanobacteria can cause skin rash as well as gastrointestinal illnesses, like upset stomach, nausea, vomiting, and diarrhea, according to officials.
The release said: “Weather and other environmental factors can cause rapid changes in water quality. “Be aware of algae blooms and avoid water that smells, is discolored, or where there are dead fish present.”
The public was urged to avoid that specific area of the lake until algae concentrations return to acceptable levels.
The latest advisory marks the seventh straight year with harmful blooms in the man-made lake that cools Dominion Energy’s North Anna nuclear power plant.
