Naturally Occurring Methane in Household Water Wells
August 30, 2013 | United States Geological Survey
USGS tested twenty household water wells in Sullivan County, Pennsylvania for methane. Seven of the wells contained detectable amounts of dissolved methane and two wells were considered to have an "elevated" methane content. None of the wells tested were located near currently producing natural gas wells.
USGS Water Contamination Report
August 6, 2013 | USGS
USGS has published a study on the vulnerability of public water supply wells to contamination in ten aquifers across the United States.
Methane Sources in Pennsylvania Ground Water
June 25, 2013 | National Ground Water Association
"The findings of a new study in the journal Groundwater® suggest that methane concentrations in Susquehanna County water wells in Pennsylvania can be explained without the migration of Marcellus shale gas due to hydraulic fracturing." Quoted from the publication press release.