Yesterday the Pennsylvania Dept. of Environmental Protection issued a drought watch for 27 counties in the state, including some of the most heavily drilled Marcellus Shale well counties–including Susquehanna, Bradford and Tioga counties. A drought watch is, according to the DEP, the first and least-severe level of the state’s three drought classifications and calls for water users to voluntarily conserve 5% of the water they have been using…