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Water sampling
Methods of collecting a representative part of a body of water for testing in controlled conditions.
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National assessment of mercury in aquatic ecosystems [More info]
Overview of three research programs including determining levels of mercury at selected sites in water, sediment and fish, mercury emissions into the atmosphere, and mercury cycling in the Everglades National Park, Florida.
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.
National field manual for the collection of water-quality data [More info]
Field manual (also available in PDF and paper formats) with instructions on techniques to collect and process water samples and to perform measurements of temperature, oxygen content, conductance, pH, turbidity, and fecal contaminants.
Nitrate in ground water near La Pine, Oregon [More info]
Description of project studying hydrologic and chemical processes that affect the movement and fate of nitrogen within the shallow aquifers of the La Pine region of central Oregon.
Occurrence of selected radionuclides in ground water used for drinking water in the United States [More info]
Results (*.pdf) of a 1998 targeted reconnaissance survey on the sources of radium, polonium, and lead radionuclides, data collection and laboratory methods, existing occurrences in drinking water, risk assessments, and compliance monitoring.
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.
PDF Pesticides in Ground Water of Wyoming, 1995-2006 [More info]
Summarizes ground-water pesticide monitoring results, shows vulnerability of aquifers to contamination.
Pesticides in Midwestern rivers, 1989-2002 [More info]
Overview of aspects of research on pesticides and herbicides in Midwestern rivers with collection of data, results over a period of time, online publications, and bibliography.
Real-time water-quality monitoring and regression analysis to estimate nutrient and bacteria concentration in Kansas streams. [More info]
Report on the use of regression equations from measurements made by water quality monitors and analytical results of manually collected samples estimating nutrient, bacteria, and other constituent concentrations to study streams in Kansas.
Reston Chlorofluorocarbon Laboratory [More info]
Site on the Chlorofluorocarbon Laboratory and its analytical services for CFCs, sulfur hexafluoride, dissolved gases including nitrogen, argon, methane, carbon dioxide, oxygen, and helium, and tritium/helium-3 dating.
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