Item talk:Q230085

{

 "@context": "http://schema.org/",
 "@type": "WebPage",
 "additionalType": "Activity",
 "url": "https://www.usgs.gov/programs/environmental-health-program/science/groundwater-quality-principal-aquifers-united-states",
 "headline": "Groundwater Quality in Principal Aquifers of the United States, 1991\u20142010",
 "datePublished": "May 21, 2015",
 "author": [
   {
     "@type": "Person",
     "name": "Leslie A DeSimone",
     "url": "https://www.usgs.gov/staff-profiles/leslie-a-desimone",
     "identifier": {
       "@type": "PropertyValue",
       "propertyID": "orcid",
       "value": "0000-0003-0774-9607"
     }
   },
   {
     "@type": "Person",
     "name": "Peter B McMahon",
     "url": "https://www.usgs.gov/staff-profiles/peter-b-mcmahon",
     "identifier": {
       "@type": "PropertyValue",
       "propertyID": "orcid",
       "value": "0000-0001-7452-2379"
     }
   }
 ],
 "description": [
   {
     "@type": "TextObject",
     "text": "Differences in geology, hydrology, geochemistry, and chemical use explain how and why aquifer vulnerability and concentrations of contaminants vary across the Nation\u2014Factors such as the mineral composition of aquifer materials, how groundwater moves through an aquifer, geochemical conditions like redox, and what chemicals are used and disposed of on the land surface all affect contaminant occurrence and vary among Principal Aquifers. As a consequence, different contaminants occur more\u2014or less\u2014frequently in some aquifers than others. Understanding how these factors act is used to predict concentrations in some aquifers, such as arsenic and nitrate in the southwest, through in-depth assessments of regional groundwater quality."
   },
   {
     "@type": "TextObject",
     "text": "Principal aquifers are regionally extensive aquifers that supply most of the groundwater pumped across the Nation for drinking water, irrigation, and other uses. Approximately 80 billion gallons are pumped from these aquifers each day. Groundwater resources are used as drinking water by 130 million people in the Nation, 43 million of which use groundwater from private wells for drinking water."
   },
   {
     "@type": "TextObject",
     "text": "The USGS National Water-Quality Assessment (NAWQA) Program used more than 200 study networks, of 20 to 30 wells each, to assess groundwater quality across the United States. From 1991 to 2010, more than 6,600 wells were sampled for this comprehensive suite of water-quality constituents, including 3,700 wells sampled in the parts of aquifers used for drinking water."
   },
   {
     "@type": "TextObject",
     "text": "This research was funded by the USGS Ecosystems Mission Area\u2019s Environmental Health Program (Contaminant Biology and Toxic Substances Hydrology) and supported by the USGS National Water-Quality Assessment Program."
   },
   {
     "@type": "TextObject",
     "text": "A new U.S. Geological Survey (USGS) report summarizes the major findings of national and regional assessments of groundwater quality in 40 Principal Aquifers in the United States. Knowledge of contaminant occurrence and the factors that control contaminant concentrations can ensure the availability and quality of this vital natural resource in the future."
   }
 ],
 "funder": {
   "@type": "Organization",
   "name": "Environmental Health Program",
   "url": "https://www.usgs.gov/programs/environmental-health-program"
 },
 "about": [
   {
     "@type": "Thing",
     "name": "groundwater"
   },
   {
     "@type": "Thing",
     "name": "Geology"
   },
   {
     "@type": "Thing",
     "name": "Environmental Health"
   },
   {
     "@type": "Thing",
     "name": "aquifer"
   },
   {
     "@type": "Thing",
     "name": "Climate"
   },
   {
     "@type": "Thing",
     "name": "Energy"
   },
   {
     "@type": "Thing",
     "name": "Methods and Analysis"
   },
   {
     "@type": "Thing",
     "name": "Ecosystems"
   },
   {
     "@type": "Thing",
     "name": "Information Systems"
   },
   {
     "@type": "Thing",
     "name": "Environmental Health Featured Science Activities"
   },
   {
     "@type": "Thing",
     "name": "Biology"
   },
   {
     "@type": "Thing",
     "name": "USGS"
   },
   {
     "@type": "Thing",
     "name": "environmental health"
   },
   {
     "@type": "Thing",
     "name": "contaminants"
   },
   {
     "@type": "Thing",
     "name": "Water"
   },
   {
     "@type": "Thing",
     "name": "Drinking Water"
   },
   {
     "@type": "Thing",
     "name": "Science Technology"
   }
 ]

}