LEADER 02442oam 2200541 450 001 9910703540903321 005 20221205101447.0 035 $a(CKB)5470000002432293 035 $a(OCoLC)902652938 035 $a(EXLCZ)995470000002432293 100 $a20150202d2014 ua 0 101 0 $aeng 135 $aurmn||||a|||| 181 $2rdacontent 182 $2rdamedia 183 $2rdacarrier 200 10$aWater quality in principal aquifers of the United States, 1991-2010 /$fby Leslie A. DeSimone, Peter B. McMahon, and Michael R. Rosen 210 1$aReston, Virginia :$cU.S. Department of the Interior, U.S. Geological Survey,$d2014. 215 $a1 online resource (150 pages) $cPDF file, illustrations (some color), maps (some color) ;$d118 MB 225 1 $aCircular ;$v1360 300 $aTitle from title screen (viewed on February 17, 2015). 300 $a"National Water-Quality Assessment Program." 320 $aIncludes bibliographical references (pages 134-144). 327 $aOverview of major findings and implications -- Principal aquifers and NAWQA approach to assessing groundwater quality -- Aquifers and processes affecting groundwater quality -- Quality of groundwater resources for drinking and other uses -- Understanding where and why constituents from geologic sources occur -- Understanding where and why contaminants from human activities occur -- How does our use of water affect groundwater quality? -- How is groundwater quality changing? 517 1 $aQuality of our nation's waters 606 $aGroundwater$xQuality$zUnited States 606 $aAquifers$zUnited States 606 $aWater quality management$zUnited States 606 $aWater quality$xEffect of human beings on$zUnited States 606 $aWater$xPollution$zUnited States$xManagement 615 0$aGroundwater$xQuality 615 0$aAquifers 615 0$aWater quality management 615 0$aWater quality$xEffect of human beings on 615 0$aWater$xPollution$xManagement. 700 $aDesimone$b Leslie A.$01387741 702 $aMcMahon$b Peter B. 702 $aRosen$b Michael R.$f1961-2021, 712 02$aGeological Survey (U.S.), 801 0$bORE 801 1$bORE 801 2$bORE 801 2$bOLA 801 2$bGPO 906 $aBOOK 912 $a9910703540903321 996 $aWater quality in principal aquifers of the United States, 1991-2010$93493285 997 $aUNINA