MANATEE COUNTY – A blue-green algae outbreak reported last week at Lake Manatee, the county’s primary drinking water reservoir, has prompted a local water quality watchdog group to question Manatee County’s claim that the water is safe, despite discoloration and an unusual odor.
In a July 19 press release, Suncoast Waterkeeper members noted that the blue-green algae, known as Anabaena or Microcystin-LR, is a cyanotoxin that may be safe from a regulatory standpoint, but not necessarily from a health standpoint.
According to the U.S. Environmental Protection Agency, elevated levels of cyanotoxins, including Anabaena, can cause health issues in humans ranging from a rash to liver and kidney damage if ingested. The most common health effects in humans include abdominal pain, headache, sore throat, vomiting, nausea, dry cough, diarrhea, blistering around the mouth and pneumonia. Continually ingesting drinking water contaminated with elevated levels of the bacteria can lead to liver and kidney damage. Anyone experiencing any of the symptoms after coming into contact with the toxin should seek medical treatment immediately and rinse off with clean water.
The EPA also warns that pets, livestock and other animals also can be adversely affected by coming into contact with contaminated water. Symptoms of cyanotoxin poisoning in animals include excessive salivating, fatigue, difficulty breathing, vomiting, diarrhea and seizures. In some severe cases, exposure can also lead to death.
In the water where the blue-green algae bloom occurs, plant and animal life may also die both during and after the bloom, resulting in fish kills in the county’s primary water supply.
County leaders say they’re treating the water with activated carbon and that anyone who is concerned about the smell or taste of the water should use a carbon filter at home.
To learn more about Anabaena and how it can affect your health, visit www.epa.gov/cyanohabs.
