As the parent of a newborn and a 4-year-old, I want to believe that my daughters will have healthy environments at home and at school. But as a pediatrician and a researcher for the University of California, San Francisco, I know that many U.S. children may face unhealthy nutrition environments in child-care facilities and schools, and may even lack an essential nutrient that most of us take for granted – water that is safe to drink. Studies suggest that children do not drink enough plain water and instead drink sugar-sweetened beverages that can lead to serious and costly health issues...