The Journal of Contaminant Hydrology is an international journal publishing scientific articles pertaining to the contamination of groundwater. Emphasis is placed on investigations of the physical, chemical, and biological processes influencing the behaviour of organic and inorganic contaminants in both the unsaturated (vadose) and saturated zones. Articles on contamination of surface water are not included unless they specifically deal with the link between surface water and groundwater. The journal's scope embraces a wide range of topics including: experimental investigations of contaminant sorption, diffusion, transformation, volatilization and transport in the unsaturated and saturated zones; characterization of soil and aquifer properties only as they influence contaminant behaviour; development and testing of mathematical models of contaminant behaviour; innovative techniques for restoration of contaminated sites; and development of new tools or techniques for monitoring the extent of soil and groundwater contamination.