When applying pesticides near water bodies, what must be ensured?

• A. That applications should be made as close as possible to water sources for effectiveness.
• B. Pesticide applications are performed at any time if water is present.
• C. No adjustments are needed for runoff.
• D. That applications are made at a safe distance to prevent contamination.

Answer: (D)

Protecting water quality by keeping pesticides away from water bodies is the focus. Pesticides can move off-target through spray drift or runoff and end up in streams, rivers, wetlands, or groundwater, which can harm aquatic life and contaminate drinking water. To prevent this, you must maintain a safe distance from water bodies, following label directions and provincial guidelines for buffer zones. This setback reduces the chance that droplets or residues reach the water, especially during rainfall or runoff events. Consider weather and conditions—avoid spraying with winds that carry drift toward water, or right before rain that could wash pesticides into waterways. Use drift-reduction practices, proper nozzle choices, and correct calibration to further minimize off-target movement. Options that urge spraying closer to water, spraying at any time when water is present, or ignoring runoff adjustments all fail to protect water quality and safety.