Residents and visitors are being asked to use caution after Alberta Health Services issued a blue-green algae advisory for Moose Lake.

A bloom of cyanobacteria, commonly known as blue-green algae, has been found in parts of the lake. While not every area of Moose Lake is affected, people are urged to avoid any water where the bloom is visible.

Blue-green algae blooms can appear blue-green, brown, pink or even red. They may look like paint floating on the water, pea soup, grass clippings or surface scum and often have a musty smell.

What you should avoid

If you are visiting Moose Lake, Alberta Health Services recommends:

• Do not swim or wade where the algae is visible.
• Avoid touching the algae in the water or along the shoreline.
• Keep children and pets away from affected areas.
• Do not drink or cook with lake water, even if it has been boiled. Boiling does not remove the toxins.
• Do not feed whole fish or fish trimmings from Moose Lake to pets.
• Avoid eating whole fish or fish organs from the lake. Fish fillets are considered a lower risk.

Anyone who comes into contact with the algae should wash off with clean tap water as soon as possible.

Watch for symptoms

Exposure to blue-green algae can cause:

• Skin irritation or rash
• Sore or red eyes
• Sore throat
• Swollen lips
• Fever
• Nausea, vomiting or diarrhea

Symptoms typically appear within one to three hours and usually improve within a day or two. Children may experience stronger reactions than adults. Exposure can also be fatal for pets.

Advisory remains in effect

Because wind and weather can move algae blooms around the lake, the advisory will remain in effect until further notice.

Areas of Moose Lake where the bloom is not visible can still be used for recreational activities. However, visitors should continue to watch for changing conditions and avoid any areas where blue-green algae is present.

Anyone with health concerns after possible exposure is encouraged to call Health Link by dialing 811.