The title is somewhat misleading, since this book looks at various types of water contamination; only the final third of the book discusses testing of drinking water, and coverage of water treatment options is limited to one 13-page chapter. Stewart has compiled a wealth of statistical information on water contamination and its ill effects, mostly drawn from U.S. government publications and scientific journal articles. Unfortunately, there is little new information presented here, and libraries needing further information on this important topic would probably be better served by obtaining some of the materials cited in the book's impressive reference and bibliography sections. Another source to consider is Steve Coffel's But Not a Drop to Drink! , LJ 3/1/89.--Ed.--Deborah Emerson, Monroe Community Coll., Rochester, N.Y.