Toxic Substances Hydrology Program
Collecting solar-distilled plant water by pipet for transfer to a sample bottle -- from the Detecting Tritium in Plants Photo Gallery
The Toxics Program supports the development of knowledge and methods for the collection, analysis, and interpretation of data related to fundamental questions about contamination in the hydrologic cycle. What is the significance of these activities in relation to the field investigations?
USGS Water Water Quality Biology Geology Geography