This Is What Fracking Really Looks Like
slate.com
slate.com
There are fair criticisms of hydraulic fracturing, but I've found that most content outside of scientific journals / EPA reports to be incredibly overblown and very inaccurate.
The other side of the problem is the explosion in global energy demand (and hence prices).
There isn't really any question that some people have seen an increase in methane in their water supply (unless you believe these people have been living without usable water for decades but only cared to do anything about it once fracking came to town). Working out why is more difficult.
Here is one study (insert usual disclaimer about relying too much on a single paper) http://www.pnas.org/content/108/20/8172.long
Our results show evidence for methane contamination of shallow drinking-water systems in at least three areas of the region and suggest important environmental risks accompanying shale-gas exploration worldwide.
Shenanigans has been called.