Bottled water is flying off the shelves in Southland supermarkets as the drought takes a firm hold on water supplies. Countdown South Island operations manager Jo McNaught said the supermarket chain had seen an increased demand for bottled water throughout the country and sales have increased more than 18 per cent on last year, including high demand during the hot summer. “We continue to monitor water sales and work closely with our suppliers to ensure we have plenty of stock on hand over the coming weeks.” Foodstuffs media spokesperson Antoinette Laird said with the hotter weather the company has definitely seen a lift in sales of products like ice cream, ice…