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Pesticide Safety Education Program (PSEP)
Part of the Pesticide Management Education Program

Avoid spills and back-siphoning. Avoid spills, especially within 25-50 feet of wells or near other water sources. Prevent back-siphoning of pesticide-contaminated water into the water source by keeping the end of the fill hose above the water level in the spray tank. Install a backflow device (such as an air gap or check valve) on the filling pipe to prevent backflow problems.

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Protecting Groundwater: A Guide for the Pesticide User

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Slide 37 of 63