USGS Toxic Substances Hydrology Program

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Toxic Substances Hydrology Program

The Toxic Substances Hydrology Program provides objective scientific information on environmental contamination to improve characterization and management of contaminated sites, to protect human and environmental health, and to reduce potential future contamination problems. Read more about the Toxics Program

Recent Headlines

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Research Projects

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Evaluating Acid Mine Drainage Cleanup Strategies

Findings Suggest VOCs May Help Explain Radionuclide Transport

Hormones in Land-Applied Biosolids Could Affect Aquatic Organisms

Antibiotics in Groundwater Change Bacterial Ecology

New Approach for Evaluating Fish Metal Toxicity

Evaluating Acid Mine Drainage Cleanup Strategies

Pyrethroid Insecticide Contamination of Streams Increases with Urbanization

Improvements in Wastewater Treatment Reduces Endocrine Disruption in Fish

Subsurface Point-Source Contamination
Projects: Petroleum (crude oil, gasoline, produced water) | Chlorinated Solvents | Mixed Wastes (landfills, wastewater) | Fractured-Rock Aquifers
Watershed-and Regional Scale Contamination
Projects: Hard-Rock Mining | Pesticides | Emerging Contaminants | Mercury | Amphibian Research | Priority Ecosystems
Methods Development
Topics: Microbial Geochemistry | Geochemistry | Hydrology | Contaminant Geophysics | Modeling

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USGS scientists collecting fish from the St. Marys River near MacClenny, FL, for the National Fish Mercury Model data base -- from the Effect of Mercury on Aquatic Ecosystems Investigation

New Publications

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Crosscutting Topics

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Selected New Publications

Threshold amounts of organic carbon needed to initiate reductive dechlorination in groundwater systems: Chapelle, F.H., Thomas, L.K., Bradley, P.M., Rectanus, H.V., and Widdowson, M.A., 2012, Remediation Journal, v. 22, no. 3, p. 19-28, doi:10.1002/rem.21318.

Perils of categorical thinking: "Oxic/anoxic" conceptual model in environmental remediation: Bradley, P.M., 2012, Remediation Journal, v. 22, no. 3, p. 9-18, doi:10.1002/rem.21317.

Occurrence and potential sources of pyrethroid insecticides in stream sediments from seven U.S. metropolitan areas: Kuivila, K.M., Hladik, M.L., Ingersoll, C.G., Kemble, N.E., Moran, P.W., Calhoun, D.L., Nowell, L.H., and Gilliom, R.J., 2012, Environmental Science and Technology, v. 46, no. 8, p. 4297-4303, doi:10.1021/es2044882.

Trophic transfer efficiency of methylmercury and inorganic mercury to lake trout Salvelinus namaycush from its prey: Madenjian, C.P., David, S.R., and Krabbenhoft, D.P., 2012, Archives of Environmental Contamination and Toxicology, doi:10.1007/s00244-012-9767-2 (Advanced Web release).

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Upcoming Publications

Occurrence of boscalid and other selected fungicides in surface water and groundwater in three targeted use areas in the United States: Reilly, T.J., Smalling, K.L., Orlando, J.L., and Kuivila, K.M., Chemosphere, doi:10.1016/j.chemosphere.2012.04.023 (IN PRESS).

Assessing time-integrated dissolved concentrations and predicting toxicity of metals during diel cycling in streams: Balistrieri, L.S., Nimick, D.A., and Mebane, C.A., Science of the Total Environment, no. 0, doi:10.1016/j.scitotenv.2012.03.008 (IN PRESS).

Volatile organic compounds in the unsaturated zone from radioactive wastes: Baker, R.J., Andraski, B.J., Stonestrom, D.A., and Luo, W., Journal of Environmental Quality, doi:10.2135/jeq2011.0480 (IN PRESS).

Microbial degradation of chloroethenes in the fractured rock aquifer at NAWC Trenton under unamended and enhanced conditions: Bradley, P.M., U.S. Geological Survey Scientific Investigations Report (IN PRESS).

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GeoHealth Newsletter

	The Geohealth Newsletter Volume 9, No. 2, 2011/2012
GeoHealth is the U.S. Geological Survey's Environmental Health Newsletter. The newsletter provides information on new USGS environmental health science activities and contributions related to safeguarding the quality of the environment, the health of wildlife and fish, and public health.

Toxics Home
About The Program
Research Projects

Subsurface Point-Source
Watershed-and Regional Scale
Methods Development

Crosscutting Topics

Agricultural Chemicals
Contaminant Occurrence
Contaminant Plumes
Contaminant Transport (GW)
Contaminant Transport (SW)
Geophysical Characterization
Field Methods
Laboratory Methods
Models
Natural Attenuation
Nutrients
Site Remediation
Tracer Tests
Unsaturated Zone

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