Which steps help prevent contamination of non-target aquatic habitats?

• A. Avoid applications near water, use buffer zones, and choose formulations with lower runoff potential.
• B. Apply near water to ensure better coverage.
• C. Use only high runoff formulations.
• D. Increase spray volume near streams.

Answer: (A)

To protect non-target aquatic habitats, the goal is to keep pesticides from moving off the treatment area and into water. The best approach combines three practices: avoid applying near water, use buffer zones between the application site and any water body, and choose formulations with lower runoff potential.

Avoiding applications near water reduces the chance of spray drift or runoff directly entering streams, ponds, or wetlands. Buffer zones provide a physical distance that helps catch or dilute any unintended movement before it could reach water. Formulations with lower runoff potential are designed to stay where they’re applied longer and resist being carried away by rain or irrigation, further limiting off-site transport. Together, these steps minimize both drift and runoff, which are the main ways pesticides contaminate aquatic habitats.

Choosing to apply closer to water, using high runoff formulations, or increasing spray volume near streams would raise the risk of contamination by promoting more off-target movement into water.