The Manager's Guide to STORET identifies applications of EPA's STORET system to the requirements of the water quality manager to reduce time-consuming and manpower-intensive manipulations of raw data and to simplify preparation of reports and graphics. The Guide describes data analysis techniques applicable to programs initiated under the Federal water Poolution Control act, as amended, with emphasis on Section 305(b). Many of the techniques described will also be applicable to programs initiated under the Toxic Substances Control Act (TSCA) and the Resource Conservation and Recovery ACT (RCRA) and to the Functions of the Office of Drinking Water and the Office of Solid Waste.