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(LIFTED) Risk advisory in effect for Sandy Lake due to possible blue-green algae bloom

**** Halifax Media Release

Update: Risk advisory for Sandy Lake lifted

The Halifax Regional Municipality is advising residents that the blue-green algae risk advisory previously in effect for Sandy Lake in Bedford, has been lifted.

Sandy Lake Beach, which is a supervised beach, will also reopen to swimming.

Blue-green algae (cyanobacteria) is naturally occurring in freshwater environments and may become visible when weather conditions are calm. These organisms can multiply rapidly during the summer, leading to extensive growth called a bloom. Some types of blue-green algae produce toxins during blooms and when these blooms decay, the toxins may be released into the water, posing a risk to people and pets.

Following initial water testing, the municipality has confirmed there are no toxin-producing strains of cyanobacteria present in the water.

Risk advisories are issued based on a number of factors, including the visual observation of algae blooms, test results and information regarding the current life-cycle phase of algae blooms. As algae blooms die and decay, toxins are released. Unsafe toxin levels can remain in the water even after the bloom is gone.

When an algae bloom is observed, a risk advisory is issued and initial testing is done to determine whether the algae bloom is toxin producing. If the algae bloom is not toxin producing, the risk advisory will be lifted and no further testing is required.

If the algae bloom is toxin producing, further testing will be carried out and the risk advisory will remain in effect until blooms have disappeared and post-bloom test results indicate water is within safe limits.

To learn more about algae blooms, visit https://www.halifax.ca/about-halifax/energy-environment/harmful-algae-blooms.

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Risk advisory in effect for Sandy Lake due to possible blue-green algae bloom

​The Halifax Regional Municipality is advising residents that due to the presence of a possible blue-green algae bloom, a risk advisory is in effect for Sandy Lake in Bedford. Residents are encouraged to avoid swimming in the lake until further notice.

Sandy Lake Beach, which is a supervised beach, will also be closed to swimming until further notice.

Blue-green algae (cyanobacteria) is naturally occurring in freshwater environments and may become visible when weather conditions are calm. These organisms can multiply rapidly during the summer, leading to extensive growth called a bloom. Some types of blue-green algae produce toxins during blooms and when these blooms decay, the toxins may be released into the water, posing a risk to people and pets.

Lake users are encouraged to take the following precautions:

  • ​ ​ ​ ​ ​ ​Avoid water contact. If contact occurs, wash with tap water as soon as possible.
  • ​ ​ ​ ​ ​ ​Do not swim or wade​ (or allow your pets to swim or wade) in any areas where blue-green algae is visible or in areas where a risk advisory has been issued.
  • ​ ​ ​ ​ ​ ​Avoid consuming water from this lake.
  • ​ ​ ​ ​ ​ ​Avoid consuming fish that has come from this lake.

People who come in contact with blue-green algae or who ingest water containing blue-green algae may experience skin irritation, rash, sore throat, sore red eyes, swollen lips, fever, nausea and vomiting and/or diarrhea. Children and immune-compromised individuals are at a higher risk. If you have these symptoms, you are advised to seek medical assistance.

Risk advisories are based on a number of factors, including test results as well as information regarding the current life-cycle phase of algae blooms. As algae blooms die and decay, toxins are released. Unsafe toxin levels can remain in the water even after the bloom is gone.

Once blooms have disappeared and post-bloom test results have been received, an update will be provided. If test results indicate water is within safe limits and no blooms can be visually observed, the risk advisory will be lifted.

To learn more about algae blooms, visit https://www.halifax.ca/about-halifax/energy-environment/harmful-algae-blooms.

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