Blue-green algal bloom reported in two Sudbury lakes
A visible bloom of blue-green algae (cyanobacteria) has been observed in Ramsey Lake and Whitewater Lake, Public Health Sudbury & Districts said Friday.
Samples taken Sept. 13 and tested by the Ministry of the Environment, Conservation and Parks confirmed the bloom, the health unit said in a news release.
"The samples contained a species of cyanobacteria that can produce toxins," the release said.
"Because blooms are not anchored, they can move from one location to another through wind and water currents. New blooms can also form. All residents on lakes and rivers should look for blooms in their area."
Blue-green algal blooms have an unsightly pea soup appearance and foul smell. Since they can produce toxins, residents should avoid using or drinking water from areas where blooms are visible.
"Toxins from blue-green algae do not remain located with the algae bloom and can spread throughout the water body," Public Health said.
"However, the highest concentrations of toxins are usually found in blooms and scum on the shoreline. These dense accumulations pose the greatest potential risks to people and pets."
The toxins can irritate the skin and, if ingested, cause diarrhea and vomiting. If a person ingests high levels of toxins, they could suffer liver and nervous system damage.
Anyone using the lake should keep an eye out for algal blooms. If you see or hear of a bloom anywhere near your property or water intake line, avoid using the water for drinking, bathing or showering, and do not allow children, pets, or livestock to drink or swim in the bloom.
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"Be aware that shallow drinking water intake pipes can pump in blue-green algae," the release said.
"Do not boil the water or treat it with a disinfectant, like bleach. This action breaks open the algae cells, which releases more toxins into the water."
Filtration systems may not protect against the toxins and don't cook with the water, since the food may absorb the toxic material.
For more information on blue-green algae, including a list and map of water bodies with confirmed blooms, visit the health unit's website or them at 705-522-9200, ext. 464, or toll-free 1-866-522-9200.
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