The Pennsylvania Department of Environmental Protection is again taking a look at the quality of drinking water in Dimock.

A new complaint about methane contamination in drinking water wells has been filed.

A previous complaint had alleged methane in the water was the result of nearby hydraulic fracture drilling for natural gas/  The D.E.P., however, ruled those incidents had been the result of natural methane gas migration.

The latest problem was reported in February.

Two water wells near drill sites operated by Cabot Oil and Gas are being investigated.