Hydraulic fracking has the potential to pollute streams and wells, according to a massive new report from the Environmental Protection Agency that also concluded that even though pollution already has happened, it is not widespread.
It is the largest review to date of the controversial oil and gas extraction technique. Although the report said fracking has not caused widespread harm, that is of little comfort to well water users who already have seen their source of water ruined.
The process of fracking involves injecting water and chemicals at a high pressure underground to discover oil and gas.