Fracking linked to increased methane in water

The video discusses a study linking shale gas extraction, or fracking, to methane contamination in drinking water in northeast Pennsylvania. It highlights that methane concentrations are 17 times higher in wells within a kilometer of active gas drilling. However, the health impacts of consuming water with high methane levels remain unclear.

What is the primary concern related to fracking and methane contamination?

What is still unclear regarding the effects of methane in drinking water?