The Sierra Club and the public interest law firm Public Justice have filed a federal lawsuit Tuesday against three energy companies engaged in hydraulic fracturing, aka fracking , in Oklahoma. The suit against New Dominion, Chesapeake Operating and Devon Energy Production Company alleges that wastewater from fracking and oil production have contributed to the state’s alarming spike in earthquake activity . Map of Oklahoma. The orange dots represent the number of earthquakes with a magnitude of 3.0 and higher from 2010 to date. The blue dots represent the state’s wastewater disposal wells. Photo credit: Earthquakes in Oklahoma The lawsuit demands the companies, as a first step, to “reduce, immediately and substantially, the amounts of production waste they are injecting into the ground.” The lawsuit was filed the same day that the Oklahoma Corporation Commission made their largest push yet to curb the state’s seismic activity. According to the Associated […]