Article Correctness Is Author's Responsibility: Arsenic exposure in us public drinking water declines following new EPA regulations

(Columbia University's Mailman School of Public Health) Exposure to arsenic in drinking water was significantly reduced among Americans using public water systems following the Environmental Protection Agency regulation on maximum levels of arsenic. Compliance led to a decline of 17 percent in levels of urinary arsenic, equivalent to an estimated reduction of over 200 cases of lung and bladder disease every year. However, there were no improvements in arsenic exposure rates among users of private wells, which are not federally regulated.