A new investigation by Marketplace and APM Reports has revealed the U.S. Environmental Protection Agency made last-minute changes to a significant 2015 study about fracking in order to downplay the drilling practice’s threat to U.S. water supplies. Documents obtained by the news outlets show that less than two months before the five-year study’s release, EPA officials added text into the executive summary saying the researchers had not found evidence fracking has “widespread systemic impacts” on drinking water—even though earlier drafts of the report had, in fact, highlighted directly how fracking had contaminated the drinking water in more than two dozen places. EPA officials went on to use that key phrase, claiming a lack of “widespread, systemic impacts” as the top finding in conference calls with reporters as well as in the press release accompanying the study’s publication. Food & Water Watch said the investigation confirms “political meddling” by the Obama administration.