What device is required on all pesticide application sites to prevent the transfer of pesticides?

An anti-siphon device is essential in preventing the backflow of pesticides into the water supply during application. This device is designed to ensure that if there is a drop in pressure in the system, the flow of any pesticide solution will not reverse and contaminate the water source. By incorporating an anti-siphon device, applicators can maintain a safe and compliant operation, as backflow can pose significant health risks and environmental contamination.

The importance of this device stems from the regulatory requirements intended to protect public health and the environment. Ensuring that pesticides do not inadvertently enter drinking water systems is crucial and is a standard safety measure required on all pesticide application sites.