Georgia Pest Control Practice Test

What device prevents pesticides from being drawn into the water system during a drop in pressure?

1. Duster

2. Air gap

3. Siphon

4. Back-flow preventer

The correct answer is: Back-flow preventer

The correct response is centered on the function of a back-flow preventer. This device is specifically designed to safeguard water systems from contamination due to reverse flow. When there is a drop in pressure within a water supply line, it can create a vacuum effect that might draw contaminated water, such as those carrying pesticides, back into the clean water supply. A back-flow preventer prevents this by creating a physical barrier that stops water from flowing backward, thus ensuring that any potentially harmful substances are kept out of the potable water system. In application to pest control practices, it's essential to maintain safety standards and prevent chemical pollutants from entering the water system, making the use of a back-flow preventer crucial in scenarios where pesticides are utilized. This device ensures that the integrity of the water supply remains intact, which is vital for both public health and environmental protection.