There was some news about fracking water being used to water crops, I believe in the Central Valley, and yes the news was dirst announced sometime ago. Here in California people were furious, not only about the toxins but that during severe drought, while we were all conserving water, this huge wastefipul project continues without regard to anything but their profits.
I see that this was in the news last year. Sorry if it has been discussed
http://www.latimes.com/local/california/la-me-drought-oil-water-20150503-story.html