What device is used to prevent back siphoning of pesticides into water sources?

The air gap device is essential for preventing back siphoning of pesticides into water sources by creating a physical separation between the water supply and the potential source of contamination. When pesticides are being mixed or applied, an air gap ensures that in the event of a pressure loss in the water system, there is no path for the contaminated water to flow back into the potable water supply. The space or gap allows for air to break the connection, effectively stopping the reverse flow.

This measure is crucial in pest management practices, particularly when working near water bodies or using water from a public supply. Ensuring that there are proper air gaps consistently safeguards drinking water and aquatic ecosystems from pesticide exposure, thereby adhering to environmental safety standards and personal responsibility in pesticide application.