While the federal government is the source of most of the regulations governing hydro-fracking, the industry has gained many exemptions over time.
Environmental Protection Agency (EPA) Regulations
The Clean Water Act of 1972, enforced by the EPA, is the primary federal law governing water pollution, intended to provide assistance for the improved treatment of wastewater and the prevention of pollution and contamination. Under federal law, however, the process of hydro-fracking is the subject of many exemptions from federal laws and regulations, including the Clean Water Act. The hydraulic drilling process is not subject to a number of environmental acts, including the Clean Air Act, Safe Drinking Water Act, National Environmental Policy Act, Resource Conservation and Recovery Act, Emergency Planning and Community Right-to-Know Act, and Comprehensive Environmental Response, Compensation, and Liability Act.
In 2015, the EPA published a report, based on a six-year $29 million study, stating that there was little evidence to support the allegations that hydro-fracking had led to widespread adverse impacts on drinking water. In December 2016, however, the EPA issued a final version of that report concluding that fracking could affect drinking water under some circumstances. Industry observers suggested that the EPA’s shift highlighted the uncertainty among government officials about the safety of hydro-fracking.