Leah Hogsten | The Salt Lake Tribune Tom Ward, Sandy City public utilities director fielded questions for over two hours Monday evening along with the mayor. As Sandy City declared Sunday evening that all of its water is now safe to drink, residents were asking why many of them were allowed to drink possibly tainted water for a week before they heard about problems, Feb.18, 2019 at a town hall meeting to address the issue. Problems began Feb. 6, when a fluoride pump malfunctioned because of a power outage. It flooded parts of the water system with huge amounts of fluoride — which can cause health problems, plus the acidic fluoride also corroded pipes in some homes to release also-dangerous heavy metals such as lead and copper.