Only one industry is allowed to inject toxic chemicals into underground sources of drinking water – hydraulic fracturing, or fracking. A new study by Stanford scientists published in Environmental Science & Technology finds for the first time that fracking operations near Pavillion have had clear impact to underground sources of drinking water. The research paints a picture of unsafe practices including the dumping of drilling and production fluids containing diesel fuel, high chemical concentrations in unlined pits and a lack of adequate cement barriers to protect groundwater.