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Orlando issues Alert for Lake Highland

UPDATED Information

UPDATED Information – Lake Highland is being closely monitored for presence of microcystins (toxins) by City of Orlando and Florida Department of Environmental Protection (FDEP) staff. On Thursday, January 21, 2021, the City of Orlando staff will be sampling Lake Highland again for algal toxins. The city's tests will provide an update on the presence of microcystins, but the official toxin determination is obtained from FDEP’s laboratory data. We will not know results from FDEP for another 2-3 weeks. At this time, the Lake Alert remains in effect until FDEP’s results indicate that Lake Highland is deemed safe by current state standards.

Please continue to call the Lake Alert number, 407.246.2220, for the most up-to-date information regarding your lake. During weekdays, the City's Lake Alert website, orlando.gov/lakealert will also have the latest information.


On December 30, 2020, City of Orlando staff took samples from Lake Highland that detected the presence of microcystins (toxins) at levels deemed unsafe by state standards. As a precaution, we are advising everyone to refrain from swimming, recreating and irrigating in/from Lake Highland until further notice.

These conditions are caused by algae blooms that could be a result of several factors, including warmer water and excessive nutrients that can come from a combination of fertilizers, septic tanks, yard waste and pet waste.

Because of the potential for harm to humans and pets, city staff will continue routine testing until the algae bloom declines and toxin levels are reduced to acceptable state standards. The city will keep the Lake Alert in place until conditions are deemed to be safe. Please encourage your neighbors to register for the Lake Alert at cityoforlando.net/lakealert so they too will get important information about Lake Highland directly.

For more information about Harmful Algae Blooms, please visit this page on the Florida Department of Health website.

If you should have additional questions, please contact Kari Lara-Murabito at kari.lara-murabito@cityoforlando.net.