What is one environmental concern related to pesticide use?

Water contamination from runoff or leaching is a significant environmental concern associated with pesticide use. When pesticides are applied to agricultural fields or landscapes, they can be carried away by rain or irrigation water, leading to runoff that may enter nearby lakes, rivers, and groundwater. This can result in the contamination of drinking water sources and aquatic ecosystems, posing risks to human health and wildlife.

The leaching process can also occur when pesticides seep into the soil and move downward through soil layers, ultimately reaching groundwater. This contamination can persist in the environment, causing long-term ecological and health issues. Understanding this concern emphasizes the need for responsible pesticide application practices to protect water resources and maintain a healthy environment.