Precaution urged at lake due to possible algae
The Ministry of Environment and Climate Change (MOECC) has collected samples at Conestogo Lake reservoir due to the possible presence of blue-green algae.
The algae may contain a toxin called microcystin that can cause illness when ingested by people or animals.
Algae blooms were first noticed last week on the shoreline. Samples were taken on July 20 by MOECC staff for analysis (results, expected back this week, were not known by press time).
Algae blooms are a natural phenomenon. They tend to occur during hot, dry weather.
When the algae die, the toxin is released in the water, where it breaks down in five to seven days.
Conestogo Lake park visitors, recreational users, and cottagers surrounding the reservoir should be aware that conditions are present for the formation of blue-green algae and take necessary precautions.
The reservoir is very active with numerous water Sports and activities. There is a beach located within Conestogo Lake Park and many cottages surround the reservoir.
There have been no reports of human illness caused by the algae.
The Grand River Conservation Authority is asking lake users not to swim in the reservoir, to keep children and pets away from the algae, avoid contact with algae, and not to eat fish or ingest water from the lake.
Boating is permitted, but avoid touching the algae.
More information on blue-green algae is available:
- in the “News” section of the GRCA website at www.grandriver.ca;
- on the Health Canada website at www.hc-sc.gc.ca/ewh-semt/alt_formats/pdf/pubs/water-eau/guide_water-2012-guide_eau/guide_water-2012-guide_eau-eng.pdf; and
- on the Ontario Ministry of Environment website at www.ontario.ca/page/blue-green-algae.
