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Contamination and pollution
Introduction of harmful substances into the environment by human action or natural processes.
Subtopics:
Industrial pollution (25 items)
Nonpoint-source pollution (11 items)
Pesticide and herbicide contamination (24 items)
Pharmaceutical contamination (3 items)
Toxic radionuclide contamination (12 items)
Toxic trace element contamination (40 items)

Water pollution (13 items)
Soil pollution (1 items)
Air pollution (7 items)
Related topics:


Results 1 - 10 of 182 listed by similarity [list alphabetically]
Toxic Substances Hydrology Program [More info]
Homepage for the Toxic Substances Hydrology Program, which provides scientific information on contaminated sites and on human and environmental health. Links to news, topical information, investigations, meetings, publications, and photos.
Pesticide National Synthesis Project: national assessment of pesticides in streams, rivers, and ground water of the United States [More info]
An assessment of pesticides in national water resources, with links to national reports, national statistics, national data, pesticide use, analytical strategy, and standards for the U.S.
National analysis of trace elements in ground water, streams, stream and reservoir sediment, and fish and clam tissue across the United States [More info]
Trace elements are inorganic chemicals occurring in small amounts in nature. This web site of the National Water Quality Assessment links to U.S. data, publications, news, and other sites on trace metals, metalloids and radionuclides in water.
Nutrients National Synthesis Project: nutrients in rivers, streams, and aquifers in the United States [More info]
This Nutrients National Synthesis Project site on the U.S. study of nutrients, especially nitrogen and phosphorus, as contaminants in high concentrations links to an overview, study team, featured reports, publications, and national datasets.
National assessment of volatile organic chemicals (VOCs) in water resources of the United States [More info]
Links to online data retrieval, information on MTBE and gasoline oxygenates, VOCs analysis, VOC publications, news features, and featured online publications.
Pollution and waste disposal [More info]
Lists priority survey areas and objectives of these programs.
PDF Algal toxins [More info]
Chapter of Field Manual of Wildlife Diseases on algal toxins, red tide toxins, phycotoxins, dinoflagellates, cyanobacterium, and bird mortality due to algal toxicosis.
Water quality information pages [More info]
Homepage of the Office of Water Quality programs on the quality of the Nation's surface water and ground water resources, with links to general information, quality assurance, software, data, publications, USGS facilities, techniques, and programs.
National Water Quality Assessment urban studies portal [More info]
Multiple studies addressing urban water-quality issues, to describe biological, chemical, and physical characteristics of urban water resources over time, and relate those characteristics to natural processes and human activities
Human Health Database [More info]
Central site providing links to USGS databases and homepages providing significant data and information on research related to human health.
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