USGS Iowa Water Science Center http://ia.water.usgs.gov/ USGS Iowa Water Science Center Homepage http://ia.water.usgs.gov/images/header_graphic_usgsIdentifier_white.jpg http://ia.water.usgs.gov Pesticide Levels Decline in Corn Belt Rivers http://www.usgs.gov/newsroom/article.asp?ID=2345 News Release United States Using Less Water than 35 Years Ago http://www.doi.gov/news/09_News_Releases/102909a.html News Release Comparing Wastewater Chemicals, Indicator Bacteria Concentrations, and Bacterial Pathogen Genes as Fecal Pollution Indicators http://jeq.scijournals.org/cgi/content/abstract/38/1/248 New Report