The U.S. Geological Survey (USGS) Toxic Substances Hydrology Program develops and applies advanced analytical methods, field investigations, laboratory studies, and modeling capabilities to understand the sources, movement, and exposure pathways of chemical and microbial hazards in the environment. Program scientists collaborate with health scientists to understand the human health implications of exposures to chemical and microbial hazards.
Our photo gallery contains photos and scientific images from current and past Toxic Substances Hydrology Program investigations.
The Program has several investigations of national interest.
Information about the USGS Toxic Substances Hydrology Program.
Degradation of crude 4-mchm (4-methylcyclohexanemethanol) in sediments from Elk River, West Virginia: Environmental Science and Technology
A method for examining temporal changes in cyanobacterial harmful algal bloom spatial extent using satellite remote sensing: Harmful Algae
The importance of quality control in validating concentrations of contaminants of emerging concern in source and treated drinking water samples: Science of the Total Environment
Field-scale observations of a transient geobattery resulting from natural attenuation of a crude oil spill: Journal of Geophysical Research--Biogeosciences
Stable isotopic composition of perchlorate and nitrate accumulated in plants--Hydroponic experiments and field data: Science of the Total Environment
Exploration of diffuse and discrete sources of acid mine drainage to a headwater Mountain stream in Colorado, USA: Mine Water and the Environment
The USGS Contaminant Biology Program develops and applies advanced laboratory methods and field investigations to understand potential biological health effects from exposures to chemical and microbial hazards in the environment.