The New York Times is reporting over 20 percent of the nation’s water treatment systems have violated the Safe Drinking Water Act over the last five years. More than 49 million people get their drinking water from the systems. While every single violation was reported, regulators took action in less than six percent of cases. The disclosure comes ahead of a Senate hearing today on enforcement of water safety laws. The EPA is expected to soon unveil new regulations for overseeing the nation’s water systems. But critics have questioned their effectiveness because the EPA is still run by many officials who ignored the old regulations.