Why should pesticides not be applied near drinking water intakes or potable water sources unless the label allows it?

• A. To ensure uniform product mixing.
• B. To protect drinking water quality and prevent contamination.
• C. To deter wildlife from the treatment area.
• D. To simplify record keeping.

Answer: (B)

The key idea is to protect drinking water supplies from pesticide contamination. Pesticides can reach source water through runoff, drift, leaching into groundwater, or spills, and some chemicals can remain through water treatment and end up in the tap. Because people rely on potable water for health and safety, labels include rules to keep pesticides away from drinking water intakes and sources. Following these rules minimizes the risk of residues entering the water supply and helps safeguard water quality for communities. If the label does allow an application near a water source, it will specify safeguards like buffer distances, weather conditions, or application methods to reduce runoff and drift. Other suggested reasons, like uniform mixing, deterring wildlife, or simplifying record keeping, don’t address the essential goal of preventing water contamination.