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Groundwater quality
Fitness of subsurface water for use based on its composition and properties.
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Contamination in Fractured Rock Aquifers [More info]
Overview of fractured rock research aimed at understanding the movement of water through fracture networks, and characterize field conditions influencing contaminant migration. Includes programs and publications.
Arsenic in ground water of the United States [More info]
Information on arsenic in United States ground water largely as a result of minerals dissolving from weathered rocks and soils. Includes links to publications, data, maps, and links to other sites with information on arsenic.
BRASS: Bedrock Regional Aquifer Systematics Study [More info]
Description of the project to publish new bedrock geologic maps in the United States to advance the understanding of the region's bedrock aquifers. Includes list of projects.
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.
Water science for schools: the Earth's water - ground water [More info]
Educational site for elementary schools students on ground water sources, ground water flow, and aquifers.
Groundwater quality in Coachella Valley, California [More info]
Five trace elements with human-health concerns were detected at high concentrations: arsenic, boron, fluoride, molybdenum, and strontium. Vanadium was present at moderate concentrations.
Groundwater quality in the Antelope Valley, California [More info]
Trace elements were present at high concentrations in 32% of the primary aquifers here, and at moderate concentrations in 17%. Of particular interest are aluminum, arsenic, vanadium, boron, fluoride, chromium, lead, and molybdenum.
Groundwater Quality in the Central Eastside San Joaquin Valley, California [More info]
Summary of a detailed study in this agricultural area.
Groundwater quality in the Central Sierra Nevada, California [More info]
Recent study indicates that inorganic trace elements and radioactive constituents are more likely to be subjects of concern in this less-developed area than anthropogenic organic compounds.
Groundwater quality in the Coastal Los Angeles Basin, California [More info]
The occurrence of solvents in the groundwater is not correlated with current overlying land use and human activities. Rather, the solvents are from legacy industrial uses, and it has taken decades for the groundwater to move to where it is now pumped.
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