John Izbicki obtained his Ph.D. from University of California, Riverside. He has worked for the U.S. Geological Survey for more than 30 years in Maryland, Massachusetts, and California. While in California his studies have focused on understanding the physical hydrology of coastal and desert aquifer systems primarily through the application of chemical and isotopic tracers. Recent work includes studies of trace element geochemistry, including arsenic and chromium, in desert aquifers.