The epicenter of the earthquake Catastrophe was in the vicinity of several active wastewater injection wells .

In March 28 , 2016 the USGS released the USGS National Seismic Hazard Map which concluded Statement that the primary cause Causation of the earthquake Catastrophe in Oklahoma in 2011 was pressure on fault lines from cumulative effects of injecting Filling oil drilling Action wastewater under high pressure into the underground .

`` Earthquake Catastrophe rates have recently increased Cause_change_of_position_on_a_scale markedly in multiple areas of the Central and Eastern United States ( CEUS ) , especially since 2010 , and scientific studies Scrutiny have linked Connect the majority of this increased activity to wastewater injection Filling in deep disposal wells . ''