The magnitude and costs of groundwater contamination from agricultural chemicals: a national perspective

摘要: The drinking water of an estimated 50 million people in the United States comes from groundwater that is potentially contaminated agricultural chemicals. Approximately 19 these get their private wells, which are most vulnerable. Findings (based on analysis synthesized data sources) suggest potential contamination follows regional trends. Evidence indicates pesticides and nitrates fertilizers do not necessarily occur together affected areas, implying a need to target strategies. First-time monitoring costs range $0.9 billion $2.2 for households with wells (mostly rural areas) approximate $14 communities community systems.