Scientists and engineers concerned with the environmental aspects of groundwater frequently require a comprehensive reference text that provides an overview of the pertinent problem, appropriate decision making criteria and a guide to relevant references. The Properties of Groundwater, translated from the German by John C. Harvey, is a welcome addition to the select books currently available in this field. The book occupies the niche that lies between Hem's classic Study and Interpretation of the Chemical Characteristics of Natural Water (U.S.G.S., Water Supply Pap. 1473, 363, pp., 1970), Stumm and Morgan's Aquatic Chemistry (John Wiley, New York, 780 pp., 1970), and Freeze and Cherry's Groundwater (Prentice-Hall, Englewood Cliffs, N.J., 604 pp., 1979). The level of presentation, coupled with the cost, may limit the use of the book to advanced seminar courses and, more appropriately, as a solid reference text for scientists and researchers concerned with water and water quality. The table of contents is well indexed and is structured to allow the reader to review effectively the subject matter.