Seneca's permit allows it to take up to 500, 000 gallons per day from the Arnot discharge.

WSJ: Pa. pushes drillers to frack with coal mine water

Paul Arnot, from SoP, said the group was seeking further legal advice.

BBC: Generic affordable homes

Seneca has been withdrawing polluted water from the Arnot No. 5 coal mine in Tioga County since late 2010 and piping it some 6 miles to the well pad.

WSJ: Pa. pushes drillers to frack with coal mine water