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Nutrients, pesticides, and emerging contaminants in drinking water supplies.
11,000 community water systems serving 180 million US customers.
Emphasis on federal policy and dollars targeted for conservation programs.
Excessive agrichemical concentrations in Hoover Reservoir requiring high cost treatment prior to delivery.
Extensive subsurface tile drainage in watershed.
800,000 City of Columbus residents receive drinking water from Hoover Reservoir.
Goal:
Identify, develop, and quantify watershed scale water quality impacts of conservation practices.
Objective:
Quantify the watershed scale water chemistry impacts of precision nutrient management and pesticide management
Approach:
Paired design using both channelized and unchannelized streams; each watershed has an approximate 2 square mile drainage area
Progress & Findings:
Paired design is valid and appropriate for these research sites.
Three years of baseline data on each of four targeted watersheds.
Field level management records collected for 70% of cropped area.
Development, release, and implementation of a special Environmental Quality Incentives Program (EQIP) targeting precision nutrient management and pesticide management.