. >> reporter: craig sautner and other resident have dealt with leaks wells.ound sautner's water contains toxic levels of arsenic, barium, manganese and glycol compounds known to be common in drilling fluids. the cause-- fracking by the cabot oil and gas company according to john hanger, former head of the state's department of environmental protection. >> there are 18 water wells that have been impacted. >> reporter: fracking involves millions of gallons of sand, water, and potentially toxic chemicals blasted deep into the earth, shattering underground shale a freeing natural gas for collection. it's at the surface where spills and blowouts causeicallyically-infused water to seep into the water table. in 2008, after testing the wells of concerned residents, hanger's agency wrote to craig sautner and other homeowners, blame the contaminated water on drilling activities conducted by cabot oil and gas. >> the water came out looking like coffee with milk in it. >> reporter: the state agency ordered cabot to stop drilling new wells and to deliver fresh water to af