Two advisories, one for blue-green algae and another for fecal bacteria levels, have now been issued for the waters of Lac La Biche lake in the days leading up to the Canada Day weekend. Alberta Health Services (AHS)  officials issued a blue-green algae advisory on Thursday, warning that areas of the lake were affected by an outbreak of the naturally-occurring bacteria that can appear on the surface as a green, blue, pink or brown-tinged  "scum" or "glob".  Human contact with blue-green algae can cause irritation to skin and the eyes. It can also cause nausea and diarrhea. The symptoms are more prominent in children, and can appear within a few hours of water contact. Ingestion of water with the bacteria can be fatal to pets.