MedPageToday story by Salynn Boyles reports surface and ground water samples taken from hydraulic fracking sites in a drilling-dense area of Colorado showed higher levels of endocrine disrupting chemical activity than reference sites with limited drilling. Areas where there had been fracking spills or accidents also showed moderate to high levels of endocrine disrupting chemical activity.
About 750 chemicals have been reported to be used in hydraulic fracking, including more than 100 known or suspected to be endocrine-disrupting. The permanent underground injection of chemicals used in fracking is not regulated by the Environmental Protection Agency and has been exempted from multiple federal regulatory acts, including the Safe Drinking Water Act, the Clean Water Act, and the Clean Air Act. There is no federal spill site registry, although some state regulatory agencies keep some information on spills.
A New York Times story by Henry Fountain reports scientists see a link between earthquakes in Oklahoma and the disposal of wastewater from oil and gas wells, including those that use the production method known as hydraulic fracturing.