 According to the Oral Health 2018 report released by the health unit, the percentage of children with tooth decay or requiring urgent care has increased by 51 per cent in 2016-17 compared to 2011-12.Mexico has no water fluoridation program; instead it has a table salt fluoridation program.As of May 2000, 42 of the 50 largest U.S. cities had water fluoridation.