A New York-based environmental advocacy group, the Natural Resources Defense Council (NDRC) reported that in 2015, nearly 77 million people in the United States lived in places where the water systems violated safety regulations in some form, including the 1974 Safe Drinking Water Act. According to a new study, if you live in the US, there is a nearly 1 in 4 chance that you either have tap water that is unsafe for drinking or that has not been monitored properly for contaminants in accordance with federal law. The report from the Natural Resources Defense Council found that there were approximately 80,000 violations of regulations for drinking water safety that were reported in 2015. Of those, over 12,000 were “health based” violations, or cases involving actual problems with contamination.