HYDROGEOLOGIC FRAMEWORK FOR GROUNDWATER PROTECTION / Mary P. Anderson: The role of groundwater in the hydrologic cycle -- Transport of chemicals through the soil zone to the water table -- Physical, chemical, and biological defense mechanisms -- Groundwater monitoring -- Mathematical simulation -- Areas of uncertainty and implications for planning -- THE INSTITUTIONAL FRAMEWORK FOR PROTECTING GROUNDWATER IN THE UNITED STATES / Timothy R. Henderson: Overview -- The state role in groundwater protection -- Federal laws and institutions protecting groundwater -- DRINKING WATER AND HEALTH / C. William Page: What microcontaminants are found in water supplies? -- What are the health implications of toxic contaminants in drinking water? -- Cancer -- Cancer processes -- Dose-response functions -- Animal studies -- Epidemiologic studies -- Cancer risk in perspective -- How can we protect the health of the public? -- TECHNOLOGICAL APPROACHES TO REMOVING TOXIC CONTAMINANTS / Robert M. Clark: Alternatives to Treatment -- Treatment Options -- Conventional Treatment -- Chemical feed and handling -- Ion exchange -- Removal of organics by adsorption -- Aeration -- Cost comparisons -- DATA AND ORGANIZATIONAL REQUIREMENTS FOR LOCAL PLANNING / Martin Jaffe: Rediscovering the past -- Local data needs -- Identifying priority areas -- Establishing a local protection program -- Broadening the local protection program -- LONG ISLAND CASE STUDY / Lee E. Koppelman: Physical setting -- The groundwater system -- Groundwater problems -- Institutional roles -- Plan recommendations -- Citizen participation -- Implementation -- DADE COUNTY, FLORIDA, CASE STUDY / Reginald R. Walters: Wellfield protection study -- Wellfield protection program -- WAUSAU, WISCONSIN, CASE STUDY / G. William Page: Sequence of events -- Sources of outside assistance -- Protection plan elements -- URBAN GROWTH MANAGEMENT AND GROUNDWATER PROTECTION: AUSTIN, TEXAS / Kent S. Butler: The Edwards aquifer and associated watersheds -- Contributing factors to enactment of the ordinances -- Watershed development standards -- Current events and long-range issues -- PERTH AMBOY, NEW JERSEY, CASE STUDIES / G. William Page: Nontoxics problems at the Runyon well field -- Toxics contamination problems -- Groundwater protection plan components -- SANTA CLARA VALLEY (SILICON VALLEY), CALIFORNIA, CASE STUDY / Thomas Lewcock: The water system of the Santa Clara Valley -- Contamination alarm -- a new awareness -- Implemenation of the model storage ordinance -- Who's in charge -- unresolved issues -- SOUTH BRUNSWICK, NEW JERSEY, CASE STUDY / G. William Page: The municipality -- Chronology of toxics pollution -- Response to well closings -- Consulting studies -- Corporate response to toxics contamination -- Government roles in developing groundwater protection policies -- Protection plan elements -- Effectiveness of plan components -- BEDFORD, MASSACHUSETTS, CASE STUDY / Bonnie J. Ram et al: Hydrogeology of the tributary watershed -- Institutional structure -- Groundwater crisis -- State and local investigation -- Profile of groundwater supplies -- Signifact local initiatives -- Litigation proceedings -- Bedford versus Advanced Metal Resource Corporation et al. -- Summary and conclusion -- Update to 1985 -- SUMMARY / G. William Page: Complexities of the groundwater system -- Fragmentation of laws and institutions -- Political support -- Significant unknowns.