The purpose of these standards is to protect the public health and welfare and enhance the quality of the nation's interstate waters to serve a variety of beneficial uses, such as public water supply, recreation, protection of aquatic life, industrial, and agricultural uses. This publication summarizes the standards for the general information of the public and Federal, State, and local officials as to the uses and associated requirements for interstate waterways of Pennsylvania. The general aim in designating uses for particular interstate waters is to recognize present uses and practicable future uses; to provide where possible for a variety of uses; and to assure compatibility of standards with Federal, State, and local resource planning.