More farmers in drought-stricken California are using oilfield wastewater to irrigate, and a new panel on Tuesday began taking one of the state’s deepest looks yet at the safety of using the chemical-laced water on food crops. Associated Press. Jan 15
http://ww2.kqed.org/science/2016/01/13/farms-using-oilfield-wastewater-under-review-for-food-safety/