In 1936 a William Dickie windmill was erected at the north end of Loch Bhasapol. This pumped water from a well into a 1,000 gallon tank in the school attic and this water was used for toilets and cleaning. As the loch water entered the tank, however, it also powered an ingenious wheel which lifted water from the school well for drinking.

‘The new school had outside flushing toilets. The new sanitary offices for the pupils were brought into use yesterday, thus providing them with water-borne sanitation for the first time in the school history of Tiree.’ Cornaigmore School Log, June 2nd 1936.