My husband and I watch the original CSI frequently. This season they had an episode where a number of citizens had died of various cancers and one guy was losing his mind because of the fracking on his land. When the CSIs went to his land, his well burst into flame and he burned to death. I was surprised that this ‘story’ would have been on CSI so quickly so I looked for evidence that something like this might have happened. Couldn't find a thing. Big Entertainment manipulates at every turn. I will not see this movie even though a friend's husband has a minor role. I would be surprised if it has any bias toward fracking as that is not how Hollywood plays any issue. PS-we haven't been as loyal to CSI since. Not a surprise. PPS-we had a friend who worked CSI and told us that many of the stories were based on real occurrences.
Natural gas in well water is not necessarily or even usually due to fracking.
More likely it is a result of the slow release of natural gas through existing fissures in the earth. Eventually some of this natural gas could dissolve in water deep underground. When the water is pumped up to the surface the dissolved gas will bubble out, just like a carbonated drink. If the gas is allowed to collect in a well cistern, it could ignite or explode if exposed to the air and a spark.
It would not surprise me at all if such water well explosions have occurred in the past, but it would very much surprise me if any such occurrence could be linked in any way to “fracking”.