 Only about 4% of the population of Vietnam has water fluoridation, whereas only 70% get their water from public supplies.Out of a population of about three-quarters of a billion, under 14 million people (approximately 2%) in Europe receive artificially-fluoridated water.Those people are in the UK (5,797,000), Republic of Ireland (4,780,000), Spain (4,250,000), and Serbia (300,000).