Researchers identify US counties with worst drinking water violations

(The Hill) -- The U.S. counties with the most egregious water quality violations are concentrated in four states: West Virginia, Pennsylvania, North Carolina and Oklahoma, a new study has found.

Standing out among the top 10 such regions was Wyoming County, West Virginia, whose public water utility boasted the highest number of infringements in a single water system, according to the study, published Tuesday in international journal Risk Analysis.

About 2 million people nationwide ...