"In Texas, where there are three major fracking regions, some residents struggle for clean drinking water. According to the Texas Commission on Environmental Quality, about 30 cities could run out of water by the end of the year. The state has already been plagued with severe drought since 2011, and fracking’s water use is draining water reservoirs even further. In the small town of Barnhart, Texas, it’s already too late.
The Guardian reported that the community ran out of water for five days before a work crew revived an abandoned railway well to pump water to the city’s residents. Some believe the solution is just a temporary fix and won’t allow them to have clean drinking water for long." - from EarthEasy site....albeit not a refereed journal site for sure.
Much of the waste water remains deep and will not be recaptured and returned to the hydraulic cycle, thus the need for ground water sources for fracking. It is estimated that the average well (if there is such a beast) will use over 4 million gallons of water! Now, state-wide the impact on water use is minimal from the oil industry. Much more is used in agriculture and manufacturing. But this could be misleading. There could be a much larger impact to local communities such as the incident in Barnhart (which in fact did take place).