USGS - science for a changing world

Environmental Health - Toxic Substances


Toxic Substances Hydrology Program Investigations

The Toxic Substances Hydrology Program conducts research on three categories of contamination issues:

Subsurface Point-Source Contamination

Contaminated Site Management and Remediation

Watershed- and Regional-Scale Contamination

Other Fundamental Research and Methods Development

Map of Toxics Program Study Sites
Locations of Toxics Program Investigations
(Click on map for larger version)

USGS scientist operating an autotrace unit to process water samples in a laboratory.
USGS scientist using an autotrace to extract pesticides from water samples in preparation for gas chromatography/mass spectrometry (GC/MS) analysis. The autotrace automates the processing of large numbers of samples -- from the Pesticide Contamination in Varied Pesticide-Use Settings Investigation

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Page Last Modified: Tuesday, 04-Aug-2015 14:51:25 EDT