Natural Resources Defense Council senior policy analyst and blogger Amy Mall puts together a list of incidents in which hydraulic fracturing, a gas-drilling process by which millions of gallons of water are injected into shale formations to extract gas, has ruined water wells of nearby home-owners. Two examples are from Arkansas (one in Bee Branch, the other in Pangburn). We get calls about this all the time and have reported on it in the past. Gas companies say there's no way to prove that fracking causes drinking water contamination. People that have brown drinking water, however, think otherwise.