James L Gray, PhD
James Gray is a Research Chemist for the USGS Water Resources Mission Area.
Science and Products
Filter Total Items: 21
Water-quality results from a wastewater reuse study: Inorganic and organic compositions of wastewater effluent and select urban and agricultural water types during rain-induced runoff, Chickasha, Oklahoma, 2018-2019 Water-quality results from a wastewater reuse study: Inorganic and organic compositions of wastewater effluent and select urban and agricultural water types during rain-induced runoff, Chickasha, Oklahoma, 2018-2019
Oklahoma State University South-Central Research Station (SCRS) was used to conduct research to understand the chemical composition of various water types and their potential environmental and human health effects. The study area provided the opportunity to study five water types: (1) receiving surface water (Washita River), (2) urban stormwater, (3) wastewater treatment plant effluent...
Concentrations of organic and inorganic constituents in tapwater samples from California in 2020-21 (ver. 3.1, March 2024) Concentrations of organic and inorganic constituents in tapwater samples from California in 2020-21 (ver. 3.1, March 2024)
This dataset contains the trace elements, cations, anions, disinfection by-products, per- and polyfluoroalkyl substances (PFAS), pharmaceutical and pesticide concentration results for the tapwater study conducted in California, November, 2020 through May, 2021. Trace elements, cations and anions were analyzed at the U.S. Geological Survey Redox Chemistry Laboratory in Boulder, Colorado...
Water-quality data for a statewide assessment of per- and polyfluoroalkyl substances (PFAS) study in Iowa, 2019-2020 Water-quality data for a statewide assessment of per- and polyfluoroalkyl substances (PFAS) study in Iowa, 2019-2020
Data were collected at 60 surface water and two effluent sites across Iowa in 2019-2020 by staff from the U.S. Geological Survey Central Midwest Water Science Center. Samples were submitted to the National Water Quality Laboratory in Denver, Colorado, and were analyzed for per- and polyfluoroalkyl substances.
Filter Total Items: 50
Mixed organic and inorganic tapwater exposures and potential effects in greater Chicago area, USA Mixed organic and inorganic tapwater exposures and potential effects in greater Chicago area, USA
Safe drinking water at the point of use (tapwater, TW) is a public-health priority. TW exposures and potential human-health concerns of 540 organics and 35 inorganics were assessed in 45 Chicago area United States (US) homes in 2017. No US Environmental Protection Agency (EPA) enforceable Maximum Contaminant Level(s) (MCL) were exceeded in any residential or water treatment plant (WTP)...
Authors
Paul Bradley, Maria Argos, Dana W. Kolpin, Shannon M. Meppelink, Kristin M. Romanok, Kelly L. Smalling, Michael J. Focazio, Joshua M. Allen, Julie E. Dietze, Michael J. Devito, Ariel Donovan, Nicola Evans, Carrie E. Givens, James L. Gray, Christopher P. Higgins, Michelle L. Hladik, Luke Iwanowicz, Celeste A. Journey, Rachael F. Lane, Zachary R. Laughrey, Keith A. Loftin, R. Blaine McCleskey, Carrie A. McDonough, Elizabeth K Medlock Kakaley, Michael T. Meyer, Andrea Holthouse-Putz, Susan D Richardson, Alan Stark, Christopher P. Weis, Vickie S. Wilson, Abderrahman Zehraoui
Reconnaissance of mixed organic and inorganic chemicals in private and public supply tapwaters at selected residential and workplace sites in the United States Reconnaissance of mixed organic and inorganic chemicals in private and public supply tapwaters at selected residential and workplace sites in the United States
Safe drinking water at the point-of-use (tapwater, TW) is a United States public health priority. Multiple lines of evidence were used to evaluate potential human health concerns of 482 organics and 19 inorganics in TW from 13 (7 public supply, 6 private well self-supply) home and 12 (public supply) workplace locations in 11 states. Only uranium (61.9 μg L–1, private well) exceeded a...
Authors
Paul M. Bradley, Dana W. Kolpin, Kristin M. Romanok, Kelly L. Smalling, Michael J. Focazio, Juliane B. Brown, Mary C. Cardon, Kurt D. Carpenter, Steven R. Corsi, Laura A. DeCicco, Julie E. Dietze, Nicola Evans, Edward T. Furlong, Carrie E. Givens, James L. Gray, Dale W. Griffin, Christopher P. Higgins, Michelle L. Hladik, Luke R. Iwanowicz, Celeste A. Journey, Kathryn Kuivila, Jason R. Masoner, Carrie A. McDonough, Michael T. Meyer, James L. Orlando, Mark J. Strynar, Christopher P. Weis, Vickie S. Wilson
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Central Plains Water Science Center, California Water Science Center, Central Midwest Water Science Center, Colorado Water Science Center, Eastern Ecological Science Center, New Jersey Water Science Center, Oregon Water Science Center, South Atlantic Water Science Center (SAWSC), St. Petersburg Coastal and Marine Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, National Water Quality Laboratory
Methods used for the collection and analysis of chemical and biological data for the Tapwater Exposure Study, United States, 2016–17 Methods used for the collection and analysis of chemical and biological data for the Tapwater Exposure Study, United States, 2016–17
In 2016, the U.S. Geological Survey (USGS) Environmental Health Mission Area, initiated the Tapwater Exposure Study as part of an infrastructure project to assess human exposure to potential threats from complex mixtures of contaminants. In the pilot phase (2016), samples were collected from 11 States throughout the United States, and in the second phase (2017), the study focused on the...
Authors
Kristin M. Romanok, Dana W. Kolpin, Shannon M. Meppelink, Maria Argos, Juliane B. Brown, Michael J. Devito, Julie E. Dietze, Carrie E. Givens, James L. Gray, Christopher P. Higgins, Michelle L. Hladik, Luke R. Iwanowicz, Keith A. Loftin, R. Blaine McCleskey, Carrie A. McDonough, Michael T. Meyer, Mark J. Strynar, Christopher P. Weis, Vickie S. Wilson, Paul M. Bradley
Pharmaceutical manufacturing facility discharges can substantially increase the pharmaceutical load to U.S. wastewaters Pharmaceutical manufacturing facility discharges can substantially increase the pharmaceutical load to U.S. wastewaters
Discharges from pharmaceutical manufacturing facilities (PMFs) previously have been identified as important sources of pharmaceuticals to the environment. Yet few studies are available to establish the influence of PMFs on the pharmaceutical source contribution to wastewater treatment plants (WWTPs) and waterways at the national scale. Consequently, a national network of 13 WWTPs...
Authors
Tia-Marie Scott, Patrick J. Phillips, Dana W. Kolpin, Kaitlyn M. Finkelstein, Edward T. Furlong, William T. Foreman, James L. Gray
Rainfall-runoff of anthropogenic waste indicators from agricultural fields applied with municipal biosolids Rainfall-runoff of anthropogenic waste indicators from agricultural fields applied with municipal biosolids
The presence of anthropogenic contaminants such as antimicrobials, flame-retardants, and plasticizers in runoff from agricultural fields applied with municipal biosolids may pose a potential threat to the environment. This study assesses the potential for rainfall-induced runoff of 69 anthropogenic waste indicators (AWIs), widely found in household and industrial products, from biosolids...
Authors
James L. Gray, Thomas Borch, Edward T. Furlong, Jessica Davis, Tracy Yager, Yun-Ya Yang, Dana W. Kolpin
Landfill leachate as a mirror of today's disposable society: Pharmaceuticals and other contaminants of emerging concern in final leachate from landfills in the conterminous United States Landfill leachate as a mirror of today's disposable society: Pharmaceuticals and other contaminants of emerging concern in final leachate from landfills in the conterminous United States
Final leachates (leachate after storage or treatment processes) from 22 landfills in 12 states were analyzed for 190 pharmaceuticals and other contaminants of emerging concern (CECs), which were detected in every sample, with the number of CECs ranging from 1 to 58 (median = 22). In total, 101 different CECs were detected in leachate samples, including 43 prescription pharmaceuticals, 22
Authors
Jason R. Masoner, Dana W. Kolpin, Edward T. Furlong, Isabelle M. Cozzarelli, James L. Gray
Non-USGS Publications**
Kolodziej, E. P., Gray, J. L., & Sedlak, D. L. (2003). Quantification Of Steroid Hormones With Pheromonal Properties In Municipal Wastewater Effluent. Environmental Toxicology and Chemistry, 22(11), 2622. doi:10.1897/03-42
Sedlak, D. L., Pinkston, K. E., Gray, J. L., & Kolodziej, E. P. (2003). Approaches for Quantifying the Attenuation of Wastewater-Derived Contaminants in the Aquatic Environment. CHIMIA International Journal for Chemistry, 57(9), 567-569. doi:10.2533/000942903777679055
Sedlak, D. L., Gray, J. L., & Pinkston, K. E. (2000). Peer Reviewed: Understanding Microcontaminants in Recycled Water. Environmental Science & Technology, 34(23). doi:10.1021/es003513e
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 21
Water-quality results from a wastewater reuse study: Inorganic and organic compositions of wastewater effluent and select urban and agricultural water types during rain-induced runoff, Chickasha, Oklahoma, 2018-2019 Water-quality results from a wastewater reuse study: Inorganic and organic compositions of wastewater effluent and select urban and agricultural water types during rain-induced runoff, Chickasha, Oklahoma, 2018-2019
Oklahoma State University South-Central Research Station (SCRS) was used to conduct research to understand the chemical composition of various water types and their potential environmental and human health effects. The study area provided the opportunity to study five water types: (1) receiving surface water (Washita River), (2) urban stormwater, (3) wastewater treatment plant effluent...
Concentrations of organic and inorganic constituents in tapwater samples from California in 2020-21 (ver. 3.1, March 2024) Concentrations of organic and inorganic constituents in tapwater samples from California in 2020-21 (ver. 3.1, March 2024)
This dataset contains the trace elements, cations, anions, disinfection by-products, per- and polyfluoroalkyl substances (PFAS), pharmaceutical and pesticide concentration results for the tapwater study conducted in California, November, 2020 through May, 2021. Trace elements, cations and anions were analyzed at the U.S. Geological Survey Redox Chemistry Laboratory in Boulder, Colorado...
Water-quality data for a statewide assessment of per- and polyfluoroalkyl substances (PFAS) study in Iowa, 2019-2020 Water-quality data for a statewide assessment of per- and polyfluoroalkyl substances (PFAS) study in Iowa, 2019-2020
Data were collected at 60 surface water and two effluent sites across Iowa in 2019-2020 by staff from the U.S. Geological Survey Central Midwest Water Science Center. Samples were submitted to the National Water Quality Laboratory in Denver, Colorado, and were analyzed for per- and polyfluoroalkyl substances.
Filter Total Items: 50
Mixed organic and inorganic tapwater exposures and potential effects in greater Chicago area, USA Mixed organic and inorganic tapwater exposures and potential effects in greater Chicago area, USA
Safe drinking water at the point of use (tapwater, TW) is a public-health priority. TW exposures and potential human-health concerns of 540 organics and 35 inorganics were assessed in 45 Chicago area United States (US) homes in 2017. No US Environmental Protection Agency (EPA) enforceable Maximum Contaminant Level(s) (MCL) were exceeded in any residential or water treatment plant (WTP)...
Authors
Paul Bradley, Maria Argos, Dana W. Kolpin, Shannon M. Meppelink, Kristin M. Romanok, Kelly L. Smalling, Michael J. Focazio, Joshua M. Allen, Julie E. Dietze, Michael J. Devito, Ariel Donovan, Nicola Evans, Carrie E. Givens, James L. Gray, Christopher P. Higgins, Michelle L. Hladik, Luke Iwanowicz, Celeste A. Journey, Rachael F. Lane, Zachary R. Laughrey, Keith A. Loftin, R. Blaine McCleskey, Carrie A. McDonough, Elizabeth K Medlock Kakaley, Michael T. Meyer, Andrea Holthouse-Putz, Susan D Richardson, Alan Stark, Christopher P. Weis, Vickie S. Wilson, Abderrahman Zehraoui
Reconnaissance of mixed organic and inorganic chemicals in private and public supply tapwaters at selected residential and workplace sites in the United States Reconnaissance of mixed organic and inorganic chemicals in private and public supply tapwaters at selected residential and workplace sites in the United States
Safe drinking water at the point-of-use (tapwater, TW) is a United States public health priority. Multiple lines of evidence were used to evaluate potential human health concerns of 482 organics and 19 inorganics in TW from 13 (7 public supply, 6 private well self-supply) home and 12 (public supply) workplace locations in 11 states. Only uranium (61.9 μg L–1, private well) exceeded a...
Authors
Paul M. Bradley, Dana W. Kolpin, Kristin M. Romanok, Kelly L. Smalling, Michael J. Focazio, Juliane B. Brown, Mary C. Cardon, Kurt D. Carpenter, Steven R. Corsi, Laura A. DeCicco, Julie E. Dietze, Nicola Evans, Edward T. Furlong, Carrie E. Givens, James L. Gray, Dale W. Griffin, Christopher P. Higgins, Michelle L. Hladik, Luke R. Iwanowicz, Celeste A. Journey, Kathryn Kuivila, Jason R. Masoner, Carrie A. McDonough, Michael T. Meyer, James L. Orlando, Mark J. Strynar, Christopher P. Weis, Vickie S. Wilson
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Central Plains Water Science Center, California Water Science Center, Central Midwest Water Science Center, Colorado Water Science Center, Eastern Ecological Science Center, New Jersey Water Science Center, Oregon Water Science Center, South Atlantic Water Science Center (SAWSC), St. Petersburg Coastal and Marine Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, National Water Quality Laboratory
Methods used for the collection and analysis of chemical and biological data for the Tapwater Exposure Study, United States, 2016–17 Methods used for the collection and analysis of chemical and biological data for the Tapwater Exposure Study, United States, 2016–17
In 2016, the U.S. Geological Survey (USGS) Environmental Health Mission Area, initiated the Tapwater Exposure Study as part of an infrastructure project to assess human exposure to potential threats from complex mixtures of contaminants. In the pilot phase (2016), samples were collected from 11 States throughout the United States, and in the second phase (2017), the study focused on the...
Authors
Kristin M. Romanok, Dana W. Kolpin, Shannon M. Meppelink, Maria Argos, Juliane B. Brown, Michael J. Devito, Julie E. Dietze, Carrie E. Givens, James L. Gray, Christopher P. Higgins, Michelle L. Hladik, Luke R. Iwanowicz, Keith A. Loftin, R. Blaine McCleskey, Carrie A. McDonough, Michael T. Meyer, Mark J. Strynar, Christopher P. Weis, Vickie S. Wilson, Paul M. Bradley
Pharmaceutical manufacturing facility discharges can substantially increase the pharmaceutical load to U.S. wastewaters Pharmaceutical manufacturing facility discharges can substantially increase the pharmaceutical load to U.S. wastewaters
Discharges from pharmaceutical manufacturing facilities (PMFs) previously have been identified as important sources of pharmaceuticals to the environment. Yet few studies are available to establish the influence of PMFs on the pharmaceutical source contribution to wastewater treatment plants (WWTPs) and waterways at the national scale. Consequently, a national network of 13 WWTPs...
Authors
Tia-Marie Scott, Patrick J. Phillips, Dana W. Kolpin, Kaitlyn M. Finkelstein, Edward T. Furlong, William T. Foreman, James L. Gray
Rainfall-runoff of anthropogenic waste indicators from agricultural fields applied with municipal biosolids Rainfall-runoff of anthropogenic waste indicators from agricultural fields applied with municipal biosolids
The presence of anthropogenic contaminants such as antimicrobials, flame-retardants, and plasticizers in runoff from agricultural fields applied with municipal biosolids may pose a potential threat to the environment. This study assesses the potential for rainfall-induced runoff of 69 anthropogenic waste indicators (AWIs), widely found in household and industrial products, from biosolids...
Authors
James L. Gray, Thomas Borch, Edward T. Furlong, Jessica Davis, Tracy Yager, Yun-Ya Yang, Dana W. Kolpin
Landfill leachate as a mirror of today's disposable society: Pharmaceuticals and other contaminants of emerging concern in final leachate from landfills in the conterminous United States Landfill leachate as a mirror of today's disposable society: Pharmaceuticals and other contaminants of emerging concern in final leachate from landfills in the conterminous United States
Final leachates (leachate after storage or treatment processes) from 22 landfills in 12 states were analyzed for 190 pharmaceuticals and other contaminants of emerging concern (CECs), which were detected in every sample, with the number of CECs ranging from 1 to 58 (median = 22). In total, 101 different CECs were detected in leachate samples, including 43 prescription pharmaceuticals, 22
Authors
Jason R. Masoner, Dana W. Kolpin, Edward T. Furlong, Isabelle M. Cozzarelli, James L. Gray
Non-USGS Publications**
Kolodziej, E. P., Gray, J. L., & Sedlak, D. L. (2003). Quantification Of Steroid Hormones With Pheromonal Properties In Municipal Wastewater Effluent. Environmental Toxicology and Chemistry, 22(11), 2622. doi:10.1897/03-42
Sedlak, D. L., Pinkston, K. E., Gray, J. L., & Kolodziej, E. P. (2003). Approaches for Quantifying the Attenuation of Wastewater-Derived Contaminants in the Aquatic Environment. CHIMIA International Journal for Chemistry, 57(9), 567-569. doi:10.2533/000942903777679055
Sedlak, D. L., Gray, J. L., & Pinkston, K. E. (2000). Peer Reviewed: Understanding Microcontaminants in Recycled Water. Environmental Science & Technology, 34(23). doi:10.1021/es003513e
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.