What is the primary function of backflow prevention devices?

The primary function of backflow prevention devices is to prevent siphoning of pesticides and other contaminants into water sources. These devices are critical in maintaining safe water quality because they ensure that water flows in one direction only—away from potential contamination sources. When pesticides are used in applications, there is a risk that the pressure in the system could drop, potentially allowing chemical solutions to be drawn back into the supply lines. Backflow prevention devices are designed specifically to eliminate this risk, thereby protecting drinking water supplies and other water sources from harmful substances. This is essential for public health and environmental safety.