What is a potential environmental concern with aerial pesticide application?

Aerial pesticide application can lead to runoff into nearby waterways, which is a significant environmental concern. When pesticides are applied, especially in large quantities, there's a risk that rainfall or irrigation can wash these chemicals off the treated fields and into streams, rivers, and lakes. This runoff can contaminate water sources, harming aquatic life and potentially affecting human health if these waters are used for drinking or recreation. It's essential to manage application practices carefully to minimize this risk, ensuring that pesticides are used responsibly and do not adversely affect the surrounding ecosystem.

While noise pollution, exhaust emissions, and aircraft damage are valid considerations, they do not directly relate to the immediate environmental impact on ecosystems and human health that runoff into waterways entails.