The following are publications provided by the Pennsylvania Department of Environmental Protection (DEP)

DEP Permit Guide to Public Water Systems: This permit guide is designed to better inform the general public and potential applicants about the Public Water System Permit. It provides information about: the types of activities which may require permits; how to apply for permits; how DEP evaluates the information received; the permitting process in general; and the authority by which DEP regulates a particular activity.

DEP Water Allocation Application and Instructions: This is the actual application and instructions for the water allocation permit for source water development of surface and groundwater. It has descriptions of the calculation methods used to determine safe yield.