This dataset provides the water-quality results for organic and inorganic concentrations analyzed from samples collected at domestic and commercial tapwater faucets and one spring, sourced in Puerto Rico. Samples were collected in October, 2017 and August and December, 2018 from 19 locations. Samples were analyzed at various U.S. Geological Survey laboratories: the National Water Quality Laboratory in Denver, Colorado for organic compounds; the Redox Chemistry Laboratory in Boulder, Colorado for inorganic constituents; the Organic Geochemistry Laboratory in Lawrence, Kansas for microcystin and pesticides including glyphosate and atrazine; the Organic Chemistry Research Laboratory in Sacramento, California for disinfection byproducts; and at Michigan Microbiological Research Laboratory in Lansing, Michigan for microbiological bacteria cell counts. Additionally, samples were analyzed for per- and polyfluoroalkyl substances at the Colorado School of Mines in Golden, Colorado and for phthalates at the University of Puerto Rico, Mayaguez.

Chemical and biological concentration results, quality assurance and quality control and statistical summaries from 26 tapwater samples, collected from paired residential and work place sites in 11 states in 2016. Samples were analylzed at U.S. Geological Survey and U.S. Environmental Protection Agency laboratories.

Chemical and biological concentration results, quality assurance and quality control and statistical summaries from 26 tapwater samples, collected from paired residential and work place sites in 11 states in 2016. Samples were analylzed at U.S. Geological Survey and U.S. Environmental Protection Agency laboratories.

Tapwater samples were obtained from groundwater sources on French Island, in the town of Campbell, Wisconsin. Samples from three locations were collected multiple times over a period of three days to assess temporal variations in water quality. Samples from an additional eight locations, were collected one time, spatially distributed around Campbell. Due to privacy concerns, the exact location of samples are anonymized. Concentration results for organic and inorganic contaminants and microbiology as well as quality-assurance results, are provided. Pesticides, pharmaceutical, volatile organic compounds, semivolatile organic compounds and per- and polyfluoroalkyl substances (PFAS) were analyzed at the U.S. Geological Survey (USGS) National Water Quality Laboratory (NWQL) in Denver, Colorado. Disinfection byproducts were analyzed at the USGS Organic Chemistry Research Laboratory (OCRL) in Sacramento, California. Inorganic contaminants were analyzed at the USGS Redox Chemistry Laboratory (RCL) and the Analytical Trace Element Chemistry Laboratory (ATECL), Boulder, Colorado in Boulder, Colorado. Cyanotoxins were analyzed at the Organic Geochemistry Research Laboratory, Lawrence, Kansas. This data release contains the inorganic results along with the volatile organic compounds, semi-volatile organic compounds, disinfection by products, pesticide, pharmaceutical, per- and polyfluoroalkyl substance (PFAS), total coliforms, Escherichia coli and heterotrophic plate count results. Expected future updates will release the cyanotoxin results when available.

Tapwater samples from residential and commercial sites were sampled in Puerto Rico in August 2018 in a pilot study. All samples were screened using estrogen, androgen and glucocorticoid in vitro bioassay screening tools to test for biological activity. This dataset is associated with the following publication: Bradley, P., I. Padilla, K. Romanok, K. Smalling, M. Focazio, S. Breitmeyer, M. Cardon, J. Conley, N. Evans, C. Givens, J. Gray, L. Gray, P. Hartig, C. Higgins, M. Hladik, L. Iwanowicz, R. Lane, K. Loftin, R.B. McCleskey, C. McDonough, E. Medlock Kakaley, S. Meppelink, and C. Weis. Pilot-scale expanded assessment of inorganic and organic tapwater exposures and predicted effects in Puerto Rico, USA. SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, NETHERLANDS, 788(147721): 1, (2021).

Tapwater samples from residential and commercial sites were sampled in Puerto Rico in August 2018 in a pilot study. All samples were screened using estrogen, androgen and glucocorticoid in vitro bioassay screening tools to test for biological activity. This dataset is associated with the following publication: Bradley, P., I. Padilla, K. Romanok, K. Smalling, M. Focazio, S. Breitmeyer, M. Cardon, J. Conley, N. Evans, C. Givens, J. Gray, L. Gray, P. Hartig, C. Higgins, M. Hladik, L. Iwanowicz, R. Lane, K. Loftin, R.B. McCleskey, C. McDonough, E. Medlock Kakaley, S. Meppelink, and C. Weis. Pilot-scale expanded assessment of inorganic and organic tapwater exposures and predicted effects in Puerto Rico, USA. SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, NETHERLANDS, 788(147721): 1, (2021).

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. The disinfection by-product compounds were analyzed at the U.S. Geological Survey Organic Chemistry Research Laboratory in Sacramento, California. Concentration results for PFAS, as well as surrogate percent recovery information, were analyzed at the National Water Quality Laboratory (NWQL) in Denver, Colorado, and were added in version 2.0. Concentration results for pharmaceutical and pesticide compounds, analyzed at the NWQL, were added in version 3.0. Version 3.1 corrects a single barium value from 710 micrograms per liter (ug/L) to 71.0 ug/L, at site TW2020 CABRG 034.

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. The disinfection by-product compounds were analyzed at the U.S. Geological Survey Organic Chemistry Research Laboratory in Sacramento, California. Concentration results for PFAS, as well as surrogate percent recovery information, were analyzed at the National Water Quality Laboratory (NWQL) in Denver, Colorado, and were added in version 2.0. Concentration results for pharmaceutical and pesticide compounds, analyzed at the NWQL, were added in version 3.0. Version 3.1 corrects a single barium value from 710 micrograms per liter (ug/L) to 71.0 ug/L, at site TW2020 CABRG 034.

This data release contains the concentration and quality-assurance results for inorganic constituents, organic compounds (volatile organic compounds [VOC], per- and polyfluoroalkyl substances [PFAS], pesticides, and disinfection byproducts [DBP]) collected in tapwater from locations in Alabama and Mississippi. Tapwater samples (11 public supply and 1 private well) were collected on December 13-14, 2022, in Dallas and Wilcox Counties, Alabama. Fifteen tapwater samples (14 public supply and 1 private well) were collected in Panola and Oktibbeha Counties in Mississippi on February 6-7, 2024. Pharmaceuticals (for Alabama samples only), VOC, and PFAS were analyzed at the U.S. Geological Survey (USGS) National Water Quality Laboratory (NWQL) in Denver, Colorado. Pharmaceutical samples for the 15 samples collected in Mississippi, were analyzed at the USGS Organic Geochemistry Research Laboratory (OGRL) in Lawrence, Kansas. Pesticides and DBP were analyzed at the USGS Organic Chemistry Research Laboratory (OCRL) in Sacramento, California. Inorganic contaminants were analyzed at the USGS Redox Chemistry Laboratory (RCL), Boulder, Colorado, and the Analytical Trace Element Chemistry Laboratory (ATECL), Boulder, Colorado. Microbiological indicators were analyzed for samples collected in Mississippi at the Michigan Bacteriological Research Laboratory in Lansing, Michigan.

This data release contains concentration and quality-assurance results for inorganic, organic analytes and microbiological pathogens collected from 30 different commercial bottled water sources. Samples were processed on July 20 and August 17, 2020 at the New Jersey Water Science Center and analyzed at various U.S. Geological Survey laboratories. Samples were analyzed for nutrients, cations and anions, trace elements and rare earth elements (REE) at the Redox Chemistry Laboratory and Analytical Trace Element Chemistry Laboratory in Boulder, Colorado; pharmaceutical, pesticide, per- and polyfluoroalkyl substances and volatile organic compounds at the National Water Quality Laboratory, Denver, Colorado; disinfection byproducts at the Organic Chemistry Research Laboratory, Sacramento, California; and microbiology at the Environmental and Public Health Microbiology Laboratory, St. Petersburg, Florida and Michigan Bacteriological Research Laboratory, Lansing, Michigan.