Recent Groundwater Research Papers from USGS Online

Seven journal papers 2007 to 2009 dealing with various aspects of contamination of public-supply groundwater wells are currently available online at a USGS web page [see ‘Source’ below].  They deal with: redox conditions; aquifer geochemistry; roles and vulnerability of young and old groundwater; groundwater age mixing; flow within wells; and short-circuit pathways.
Source:  http://oh.water.usgs.gov/tanc/NAWQATANC.htm