Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake and Water and information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted. For more information, please see www.doi.gov/shutdown
Our Two Integrated Science Programs Jointly Provide Science to Understand Challenging Environmental Contaminant Questions to Safeguard Health
Together, Toxic Substances Hydrology and Contaminant Biology Program scientists across the U.S. provide the expertise to understand sources, transport, fate, and hazards that environmental contaminants and pathogens may pose to the health of humans and other organisms. Together these Programs provide the science to help stakeholders protect our most precious resource—health.
Contaminant Biology Program scientists develop and apply advanced laboratory methods, field investigations, and modeling capabilities to understand toxicity and effects of environmental contaminant exposure. They work jointly with Toxic Substances Hydrology Program Scientists who determine sources, movement, and exposure pathways of contaminants in the environment.
Toxic Substances Hydrology Program scientists develop and apply advanced analytical methods, field investigations, laboratory studies, and modeling capabilities to understand sources, movement, and exposure pathways of chemical and microbial contaminants in the environment. They work jointly with Contaminant Biology Program Scientists who then determine the toxicity and effects of contaminants.