2007 Drinking Water Infrastructure Needs Survey and Assessment
http://www.epa.gov/safewater/needssurvey/pdfs/2007/report_needssurvey_2007.pdf
Finds that $334.8 billion investment is needed to upgrade public water system infrastructure in the country. Represents public works projects necessary from 2007 through 2026 to provide safe drinking water to the public. The survey is carried out once every four years. From the Environmental Protection Agency.
