LAKE COUNTY, Calif. – Additional testing for cyanobacteria at sites around Clear Lake has found levels in the “danger threshold” at two locations.

Earlier this week, officials reported that testing conducted by the Big Valley Band of Pomo Indians and Elem Indian Colony had found microcystin cyanotoxin at the “elevated” level at Austin Park Beach in Clearlake, as Lake County News has reported.

On Friday, Lake County Public Health Officer Dr. Gary Pace said lab testing has now confirmed that Austin Park in Clearlake and Jago Bay near Lower Lake, have demonstrated significantly elevated levels, both sites testing above the “danger” threshold level.

Public Health urges boaters and recreational users to avoid direct contact with or use of waters containing cyanobacteria. Wading, swimming and other contact with the water, scum, foam or algae at these locations may present serious health risks.

At the level of toxicity currently evident in Jago Bay and Austin Park, the Centers for Disease Control and Prevention recommends people and animals should stay out of the water until further notice.

Officials asked that people also avoid contact with the scum in the water or near the shore.

If you or a family member becomes ill after exposure to potentially-affected water, seek medical attention. Adverse health effects can include upset stomach, vomiting and diarrhea. In severe cases, liver and kidney damage may result.

Pet owners should not allow their animals to drink the water or go near the scum, and they are encouraged to contact a veterinarian if your animal shows signs of illness.

Fish and shellfish that have been in contact with “danger” level algal blooms are not safe to eat, and affected water should not be used for drinking or cooking.

Large, biologically rich natural bodies of water, like Clear Lake, are dynamic in water quality. Understanding what signs to look for when recreating can help ensure residents and visitors safely enjoy Lake County’s defining feature.

For more information, visit the county’s online resources on cyanobacteria and health effects and precautions.

For current cyanotoxin lab results, please visit the Big Valley Band of Pomo Indians cyanotoxin monitoring website and Clear Lake Water Quality Facebook page.