250 B gallons in, 210 B gallons out. So net-net 40B gallons for the entire industry between 2005 and 2014. Call it 40,000 swimming pools worth.

The "out" is completely treatable.

"Large though those numbers seem, the study calculates that the water used in fracking makes up less than 1 percent of total industrial water use nationwide." - FTA.

"Gasland" is a bad movie.

Now, in some places, the available water is sufficiently short that it probably should not be used for industrial use at all.