How Much Water Does Texas Use for Oil & Gas Drilling?

Texas Map of Oil & Gas Drilling

Click on the map above and click on the blue pins.  Each blue is an oil or gas spill. 

Does the average person in Texas aware of the volume of water used by oil and gas drilling?
Each oil & gas fracking well uses averages 2-6 million gallons of water pumped underground.  

According to Wikipedia:

From January 2011 through May 2013, oil & gas fracking rigs in the Eagle Ford Shale region of Texas used approximately 19 billion gallons of water for its 4,300-plus wells. That's was the highest water use of any fracking region in the country.

In 2012 it was estimated that each fracked well in the Barnett Shale of Texas used 2.8 million gallons; in Eagle Ford Shale of Texas, 4.3 million per fracked well; and in Haynesville Shale region of Texas, 5.7 million gallons per fracked well.

A 2013 study published in Environmental Science and Technology looked at past and projected water use for fracking in the Barnett, Eagle Ford, and Haynesville shale plays in Texas, and found that fracking in 2011 was using more than twice as much water in the state as it was three years earlier. In Dimmit County, home to the Eagle Ford shale development in South Texas, fracking accounted for nearly a quarter of overall water consumption in 2011 and is expected to grow to a third in a few years, according to the study.