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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
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Recent Headlines
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Research Projects
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Sometimes the Question Is "Who Isn't Living There?"
Antibiotics in Groundwater Affect Natural Bacteria
Endocrine Disrupting Chemicals in the Slick Scum that Covers Stones in Streams
Chemical Geology Highlights Importance of Diel Processes in Rivers and Lakes
Do Natural Processes Mitigate Contamination from Landfill Leachate?
Understudied Fungicides Common in U.S. Streams Draining Agricultural Land
Algal Blooms Consistently Produce Complex Mixtures of Cyanotoxins and Co-Occur with Taste-and-Odor Causing Compounds in 23 Midwestern Lakes
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- 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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Photo Gallery |
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West to east cross-section of trichloroethylene (TCE) plume. Plume is flowing under Ashumet Pond and discharging to Johns Pond, Cape Cod, Massachusetts. The TCE plume was identified as a branch of the chemical spill-10 (CS-10) plume -- from the Passive-Vapor-Diffusion Sampler Photo Gallery
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New Publications |
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Crosscutting Topics
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Selected New Publications
Fish endocrine disruption responses to a major wastewater treatment facility upgrade: Barber, L.B., Vajda, A.M., Douville, C., Norris, D.O., and Writer, J.H., 2012, Environmental Science and Technology, v. 46, no. 4, p. 2121-2131, doi:10.1021/es202880e.
Linkages between denitrification and dissolved organic matter quality, Boulder Creek watershed, Colorado: Barnes, R.T., Smith, R.L., and Aiken, G.R., 2012, Journal of Geophysical Research, v. 117, no. G1, p. G01014, doi:10.1029/2011jg001749.
Hydrology and methylmercury availability in coastal plain streams (Chapter 8): Bradley, P., and Journey, C., 2012 in Nayak, P., ed., Water Resources Management and Modeling, Rijeka, Croatia, InTech, p. 169-190, ISBN:9789535102465.
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Upcoming Publications
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).
Microbial mineralization of cis-dichloroethene and vinyl chloride as a component of natural attenuation of chloroethene contaminants under conditions identified in the field as anoxic: Bradley, P.M., U.S. Geological Survey Scientific Investigations Report (IN PRESS).
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- Agricultural Chemicals
- Contaminant Occurrence Studies
- Contaminant Plume Geochemistry and Microbiology
- Geophysical Characterization
- Ground-Water Contaminant Transport
- Field Methods
- Laboratory Methods
- Models
- Natural Attenuation
- Nutrients
- Site Remediation
- Surface-Water Contaminant Transport
- Tracer Tests
- Unsaturated Zone
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Meetings |
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USGS cosponsors the special session Fate and Transport of Radionuclides in the Environment at the 2009 AGU Fall Meeting, San Francisco, California, December 14-18, 2009
USGS cosponsors the special session Nutrient Sources and Cycling in Aquatic Systems at the 2009 AGU Fall Meeting, San Francisco, California, December 14-18, 2009
USGS cosponsors the special session Fate and Behavior of Pharmaceuticals in Treated Wastewaters, Sludge and River Waters at the SETAC 30th Annual Meeting, New Orleans, Louisiana, November 19-23, 2009
The USGS sponsored the special session Endocrine Disrupting Chemicals--Analytical Methods and Environment Processes at the SETAC 30th Annual Meeting, New Orleans, Louisiana, November 19-23, 2009
USGS and Montana Tech of the University of Montana co-sponsor the Special Session Diurnal Biogeochemical Processes in Rivers, Lakes, and Shallow Groundwater at the 2009 GSA Annual Meeting, Portland, Oregon, October 18-21, 2009
USGS science featured at the AAAS symposium San Francisco Bay: Tracking and Understanding a Changing Estuary, San Francisco, California, August 17, 2009
USGS and Colorado State University co-sponsor EmCon2009-2nd International Conference on Occurrence, Fate, Effects, and Analysis of Emerging Contaminants in the Environment, Fort Collins, Colorado, August 4-7, 2009
USGS, University of Texas at El Paso, and the Mountain Studies Institute conducted a field trip on Acid Rock Drainage in the San Juans in Prospect Gulch, near Silverton, Colorado, on August 1, 2009.
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