Environmental groups band together to call on agency to improve laws for disposal of wastewater, often dumped in places that could leak toxic chemicals
Environmental groups have threatened to sue the Obama administration for failing to prevent swarms of earthquakes that came in the wake of America’s fracking boom.
In a first step to a lawsuit, the groups on Wednesday challenged the Environmental Protection Agency to improve what they said were weak laws governing the disposal of fracking waste – or go to court.
Related: US government says drilling causes earthquakes – what took them so long?