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 concern.
Information about the USGS Toxic Substances Hydrology Program.
Rainfall-runoff of anthropogenic waste indicators from agricultural fields applied with municipal biosolids: Science of the Total Environment
Shifts in microbial community structure and function in surface waters impacted by unconventional oil and gas wastewater revealed by metagenomics: Science of the Total Environment
Anoxic nitrate reduction coupled with iron oxidation and attenuation of dissolved arsenic and phosphate in a sand and gravel aquifer: Geochimica et Cosmochimica Acta
Aquatic concentrations of chemical analytes compared to ecotoxicity estimates: Science of the Total Environment
Nationwide reconnaissance of contaminants of emerging concern in source and treated drinking waters of the United States--Pharmaceuticals: Science of the Total Environment
Human health screening and public health significance of contaminants of emerging concern detected in public water supplies: Science of the Total Environment