" 

 == there already is a link to the Safe drinking Water Act (text removed)  == 

 The result of a 2004 EPA study on coalbed hydraulic fracturing was used to justify the passing of the exemption; however EPA whistleblower Weston Wilson and the Oil and Gas Accountability Project found that critical information was removed from the final report. Halliburton is the leading provider of fracking services in the United States. 

 This is a world level article. This could be in the US article, I feel."