Salty, oily drinking water left sores in their mouths. Oklahoma refused to find out why.

In our latest investigation, reporter Nick Bowlin digs into a troubling question: What happens when families report salty, oily drinking water that leaves sores in their mouths — and the state declines to determine the cause? In “Salty, oily drinking water left sores in their mouths. Oklahoma refused to find out why,” Nick traces complaints of oilfield contamination, examines how regulators…