What is an important consideration to prevent environmental contamination when using pesticides?

Preventing environmental contamination when using pesticides is crucial for protecting water sources, soil, and non-target organisms. One of the most important considerations is to avoid applying pesticides near water sources. This practice helps to ensure that pesticides do not run off into rivers, lakes, or streams during rainfall or irrigation, which can severely affect aquatic life and contaminate drinking water supplies.

Proximity to water increases the risk of pesticide drift or runoff, especially during application when environmental conditions are not ideal. By maintaining a safe distance from these areas, the potential for harmful exposure to both the environment and human populations is significantly reduced.

In contrast, while using smaller quantities, applying during dry weather, or mixing with water before use may seem beneficial for various reasons such as reducing active ingredient loads or ensuring proper application, these methods do not directly address the significant risk posed by the application of chemicals near water sources. Therefore, avoiding application near water is the most effective strategy for preventing environmental contamination.