Gregory C. Delzer, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 35
Organic compounds in Elm Fork Trinity River water used for public supply near Carrollton, Texas, 2002–05 Organic compounds in Elm Fork Trinity River water used for public supply near Carrollton, Texas, 2002–05
Organic compounds studied in this U.S. Geological Survey (USGS) assessment generally are man-made, including pesticides, solvents, gasoline hydrocarbons, personal-care and domestic-use products, refrigerants, and propellants. A total of 103 of 277 compounds were detected at least once among the 30 samples of source water for a community water system on the Elm Fork Trinity River near...
Authors
Patricia B. Ging, Gregory C. Delzer, Pixie A. Hamilton
Organic compounds in Potomac River water used for public supply near Washington, D.C., 2003-05 Organic compounds in Potomac River water used for public supply near Washington, D.C., 2003-05
Organic compounds studied in this U.S. Geological Survey (USGS) assessment generally are man-made, including, in part, pesticides, solvents, gasoline hydrocarbons, personal care and domestic-use products, and refrigerants and propellants. A total of 85 of 277 compounds were detected at least once among the 25 samples collected approximately monthly during 2003-05 at the intake of the...
Authors
Michael J. Brayton, Judith M. Denver, Gregory C. Delzer, Pixie A. Hamilton
Anthropogenic organic compounds in source water of nine community water systems that withdraw from streams, 2002-05 Anthropogenic organic compounds in source water of nine community water systems that withdraw from streams, 2002-05
Source water, herein defined as stream water collected at a water-system intake prior to water treatment, was sampled at nine community water systems, ranging in size from a system serving about 3,000 people to one that serves about 2 million people. As many as 17 source-water samples were collected at each site over about a 12-month period between 2002 and 2004 for analysis of 258...
Authors
James A. Kingsbury, Gregory C. Delzer, Jessica A. Hopple
Man-made organic compounds in source water of nine community water systems that withdraw from streams, 2002-05 Man-made organic compounds in source water of nine community water systems that withdraw from streams, 2002-05
Initial findings from a national study by the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) characterize the occurrence of about 250 anthropogenic organic compounds in source water (defined as water collected at a surface-water intake prior to water treatment) at nine community water systems in nine States in the Nation. The organic compounds...
Authors
James A. Kingsbury, Gregory C. Delzer, Pixie A. Hamilton
Study design and percent recoveries of anthropogenic organic compounds with and without the addition of ascorbic acid to preserve water samples containing free chlorine, 2004-06 Study design and percent recoveries of anthropogenic organic compounds with and without the addition of ascorbic acid to preserve water samples containing free chlorine, 2004-06
The National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) began implementing Source Water-Quality Assessments (SWQAs) in 2002 that focus on characterizing the quality of source water and finished water of aquifers and major rivers used by some of the larger community water systems in the United States. As used for SWQA studies, source water is the raw...
Authors
Joshua F. Valder, Gregory C. Delzer, Curtis V. Price, Mark W. Sandstrom
National Water-Quality Assessment Program - Source Water-Quality Assessments National Water-Quality Assessment Program - Source Water-Quality Assessments
In 2002, the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) implemented Source Water-Quality Assessments (SWQAs) to characterize the quality of selected rivers and aquifers used as a source of supply to community water systems in the United States. These assessments are intended to complement drinking-water monitoring required by Federal, State...
Authors
Gregory C. Delzer, Pixie A. Hamilton
Science and Products
Filter Total Items: 35
Organic compounds in Elm Fork Trinity River water used for public supply near Carrollton, Texas, 2002–05 Organic compounds in Elm Fork Trinity River water used for public supply near Carrollton, Texas, 2002–05
Organic compounds studied in this U.S. Geological Survey (USGS) assessment generally are man-made, including pesticides, solvents, gasoline hydrocarbons, personal-care and domestic-use products, refrigerants, and propellants. A total of 103 of 277 compounds were detected at least once among the 30 samples of source water for a community water system on the Elm Fork Trinity River near...
Authors
Patricia B. Ging, Gregory C. Delzer, Pixie A. Hamilton
Organic compounds in Potomac River water used for public supply near Washington, D.C., 2003-05 Organic compounds in Potomac River water used for public supply near Washington, D.C., 2003-05
Organic compounds studied in this U.S. Geological Survey (USGS) assessment generally are man-made, including, in part, pesticides, solvents, gasoline hydrocarbons, personal care and domestic-use products, and refrigerants and propellants. A total of 85 of 277 compounds were detected at least once among the 25 samples collected approximately monthly during 2003-05 at the intake of the...
Authors
Michael J. Brayton, Judith M. Denver, Gregory C. Delzer, Pixie A. Hamilton
Anthropogenic organic compounds in source water of nine community water systems that withdraw from streams, 2002-05 Anthropogenic organic compounds in source water of nine community water systems that withdraw from streams, 2002-05
Source water, herein defined as stream water collected at a water-system intake prior to water treatment, was sampled at nine community water systems, ranging in size from a system serving about 3,000 people to one that serves about 2 million people. As many as 17 source-water samples were collected at each site over about a 12-month period between 2002 and 2004 for analysis of 258...
Authors
James A. Kingsbury, Gregory C. Delzer, Jessica A. Hopple
Man-made organic compounds in source water of nine community water systems that withdraw from streams, 2002-05 Man-made organic compounds in source water of nine community water systems that withdraw from streams, 2002-05
Initial findings from a national study by the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) characterize the occurrence of about 250 anthropogenic organic compounds in source water (defined as water collected at a surface-water intake prior to water treatment) at nine community water systems in nine States in the Nation. The organic compounds...
Authors
James A. Kingsbury, Gregory C. Delzer, Pixie A. Hamilton
Study design and percent recoveries of anthropogenic organic compounds with and without the addition of ascorbic acid to preserve water samples containing free chlorine, 2004-06 Study design and percent recoveries of anthropogenic organic compounds with and without the addition of ascorbic acid to preserve water samples containing free chlorine, 2004-06
The National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) began implementing Source Water-Quality Assessments (SWQAs) in 2002 that focus on characterizing the quality of source water and finished water of aquifers and major rivers used by some of the larger community water systems in the United States. As used for SWQA studies, source water is the raw...
Authors
Joshua F. Valder, Gregory C. Delzer, Curtis V. Price, Mark W. Sandstrom
National Water-Quality Assessment Program - Source Water-Quality Assessments National Water-Quality Assessment Program - Source Water-Quality Assessments
In 2002, the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) implemented Source Water-Quality Assessments (SWQAs) to characterize the quality of selected rivers and aquifers used as a source of supply to community water systems in the United States. These assessments are intended to complement drinking-water monitoring required by Federal, State...
Authors
Gregory C. Delzer, Pixie A. Hamilton