Health Officials Warn of Toxic Algae in Doctors Lake

Blue-green algae detected in Clay County waterway, prompting public advisory

Apr. 17, 2026 at 4:47pm

Got story updates? Submit your updates here. ›

An extreme close-up X-ray photograph showing the intricate, glowing internal structures of a blue-green algae colony, conceptually illustrating the environmental health hazard detected in a local waterway.A microscopic view of the toxic blue-green algae bloom that has prompted a public health warning in Doctors Lake.Fleming Island Today

The Florida Department of Health in Clay County has issued a public warning about the presence of blue-green algae in Doctors Lake, a popular recreational waterway in the Fleming Island area. Water sample testing confirmed the toxic algal bloom, leading health officials to caution residents and visitors about potential health risks associated with exposure.

Why it matters

Blue-green algae, also known as cyanobacteria, can produce dangerous toxins that pose serious health threats to humans and animals. Exposure through skin contact, ingestion, or inhalation can cause rashes, stomach or liver illness, neurological effects, and in severe cases, death. This advisory underscores the importance of monitoring water quality and quickly informing the public about emerging environmental health hazards.

The details

According to the DOH-Clay, water sample testing on April 16 confirmed the presence of blue-green algae in Doctors Lake. The lake, a popular destination for fishing, boating, and other water recreation, is now under a public health advisory warning residents to avoid contact with the water. Health officials are working to determine the extent and concentration of the algal bloom, and will continue monitoring the situation.

  • The DOH-Clay issued the public health advisory on April 16, 2026.

The players

Florida Department of Health in Clay County (DOH-Clay)

The county health department responsible for monitoring public health and environmental conditions in Clay County, Florida.

Doctors Lake

A recreational waterway located in the Fleming Island area of Clay County, Florida.

Got photos? Submit your photos here. ›

What’s next

The DOH-Clay will continue to test water samples from Doctors Lake and provide updates to the public on the status of the blue-green algae bloom and any associated health risks.

The takeaway

This incident highlights the importance of vigilant water quality monitoring and swift public notification when potentially toxic algal blooms are detected. Residents and visitors to Doctors Lake should heed the health advisory and avoid contact with the water until the situation is resolved.