Concepts for a National Water-Quality Assessment Program

A proposed National Water-Quality Assessment Program, described in this report, would contribute to the Nation's need for better information on the status, trends, and causes of water-quality conditions across the Nation. The assessments would be conducted through an aggregation of individual studies of key river basins and aquifer systems to provide water-quality information that is useful in understanding and managing these important water resources, as well as answering national questions about water quality.

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