A unique sourcebook for analyzing the environmental health of groundwater. This complete guide, the first of its kind, works in conjunction with a supporting web site. Environmental Isotopes in Hydrogeology is the first book to focus exclusively on this critical area of hydrogeology and the first to explain the topic in terms the non-specialist will understand. The authors have evaluated half a century of research to provide this essential how-to guide for students and scientists. The book explains the theoretical basis of the methods, demonstrates how to apply them, and illustrates key points with practical case studies and problem sets. TOC:The Environmental Isotopes - Groundwater Provenance: The Input Function - Groundwater Recharge: Do Isotopes Reflect Precipitation - Identifying and Dating Modern Groundwaters - Tracing Groundwater Mixing with Isotopes - Groundwater-Surface Interaction - Age Dating Old Groundwaters - Water-Rock Interaction and Isotope Exchange - Groundwater Quality and Geochemical Processes - Case Studies for the Origin and Age of Groundwater - The Field Sampling Techniques - References - Index