People are being urged to exercise caution over a potentially toxic algae which is currently present in Keeldra Lough in Leitrim.
As a result, Leitrim County Council has issued a public notice warning not to swim in the lake or drink the water.
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At this time of year an algal bloom or scum may appear on, or close to the shoreline of a lake.
The Council is warning that this bloom could be toxic.
