New research from Yale and Penn State studies found that drinking water quality in Pennsylvania hasn’t been impacted by the drilling boom that has turned the countryside into a natural gas production zone, according to the Associated Press.

Since arriving in 2008, energy companies have drilled more than 11,000 wells, making Pennsylvania second only to Texas in natural gas production. However, the increased activity has made residents near the wells, environmental groups and researchers worried about water pollution.

Results from the recent studies found that methane increased in some water supplies,  but this phenomenon was attributed to natural variability.







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