National Ground Water Association

A hydrogeologist is a geologist who specializes in the study of the occurrence, movement, distribution, quantity, quality, and characteristics of formations that store and distribute groundwater. A groundwater hydrologist is a hydrologist who specializes in atmospheric and surface/subsurface interactions. Hydrogeologists typically train in departments of geology whereas groundwater hydrologists usually study within engineering departments, although interdisciplinary programs are becoming more common. Hydrogeologists and groundwater hydrologists and engineers evaluate the quantity, quality, reliability, and sustainability of all aspects of groundwater assessment, management, and development.
 
Academic training in geology, chemistry, and biology are required, as is a good background in mathematics and computer skills. Good communication skills, both verbal and written, are essential. Subdisciplines may require knowledge of atmospheric science, geophysics, geochemistry, statistics, and data analysis. The physical demands of fieldwork are more strenuous than pursuits in the laboratory or computer-modeling center. Water supply and groundwater remediation are common areas of concentration for the professional.
 
Hydrogeologists and groundwater hydrologists are employed at all levels of government, by consulting firms, within industry, and in academic or institutional settings. A master's degree is beneficial for all career paths and a doctorate is typically required for academic and institutional settings.