NRDC says drinking water contamination, lack of testing widespread across U.S.

According to a new report issued by the Natural Resources Defense Council (NRDC), 77 million people — roughly a quarter of the U.S. population — spread across all 50 states were served by water systems reporting violations of the Safe Drinking Water Act in 2015. The offenses ranged from arsenic to nitrate contamination, and included often-serious failures to test or report contamination levels.