What precaution should you take when applying pesticides near water sources?

When applying pesticides near water sources, it's essential to follow established buffer zones. Buffer zones are designated areas that prohibit or restrict pesticide application to help protect aquatic ecosystems from pesticide runoff. These zones help prevent contamination of water bodies, which can harm fish, aquatic invertebrates, and other organisms in the water.

By adhering to buffer zone regulations, pesticide applicators can minimize the risk of water pollution and ensure compliance with environmental protection standards. This practice is critical for maintaining ecological balance and safeguarding human health, as contaminated water can pose risks to drinking supplies and recreational waters.

Other options, while they may seem reasonable, do not adequately address the specific risks associated with pesticide application near water sources. Marking the area and using protective gear might contribute to safety and awareness, but neither directly prevents environmental contamination like buffer zones do. Organic pesticides, on the other hand, may reduce some risks but are not a comprehensive solution for managing pesticide application near water. Thus, following established buffer zones is the most effective precaution.