Recent samples taken at Loch Braigh na h-Aoidhe (Braighe Loch) Isle of Lewis have indicated the presence of blue-green algae.
As a precautionary measure, notices have been posted next to the loch, warning that contact with the algal scum should be avoided. The bloom has the potential to discharge onto Melbost Beach.
Dog walkers using the area should take care that their dogs do not come into contact with the algal scum.
Adjoining landowners and fishing interests have been advised of the situation as has the Environmental Health section of Comhairle nan Eilean Siar, SEPA Stornoway Office and NHS Western Isles.