Groundwater Monitoring & Remediation · 1992 · 20 citations · 1 references
Groundwater QualityEnvironmental MonitoringEngineeringPesticide-residue AnalysisAgricultural Water ManagementEnvironmental EngineeringAgricultural AreasAgricultural EconomicsEnvironmental RemediationEnvironmental QualityLand ApplicationWater QualityGroundwater PollutionEcotoxicologyGroundwater ManagementEnvironmental ToxicologyPesticide DetectionRural Wells
Abstract Two hundred and one rural wells were sampled in eight agricultural areas of Missouri. Samples were analyzed for 25 pesticides and nitrate. Forty‐three percent of the wells sampled had at least one pesticide detection. Thirteen percent of the wells had at least one detection ≧ 1 ppb and these concentrations were confirmed. Only one well exceeded U.S. EPA Health Advisory levels. Twenty‐two percent of the wells exceeded the U.S. EPA Drinking Water Standard for nitrate. Pesticide detections were most strongly correlated to well depth. Nitrate levels were primarily related to well depth, well construction methods, and well siting.
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