A U.S. Environmental Protection Agency draft finding that it may have detected groundwater pollution resulting from a controversial technique that plays a huge role in modern oil and gas development isn’t settled science yet.

Nor is it settled politics, especially where hydraulic fracturing has been opening up vast new oil and gas reserves and creating economic opportunities that might not otherwise exist.

And so the debate over fracking is likely to continue.

Environmentalists have been sounding the alarm about fracking in Pennsylvania, New York State and other places with new gas drilling.