Which statement best describes the purpose of buffer zones around wells or springs in aquatic pesticide applications?

• A. They are optional practices for large farms.
• B. Protect drinking water by reducing pesticide exposure risk to groundwater.
• C. Increase runoff to nearby streams.
• D. Only apply to irrigation canals.

Answer: (B)

Buffer zones around wells or springs are placed to keep pesticide applications away from drinking-water sources, reducing the chance that chemicals will move into groundwater. By creating a safety margin and often including vegetative buffers or setback distances, these zones limit spray drift, runoff, and leaching toward wells and springs. This helps protect people who rely on groundwater for drinking water from potential pesticide exposure and contamination.

Buffer zones are not optional practices and they do more than influence runoff dynamics near ponds or streams; they are specifically intended to safeguard drinking water by reducing the likelihood that pesticides reach groundwater or spring sources. They also apply to various water sources, not just irrigation canals.