This is why you should only eat organically grown food – 8
Improve Water Quality and the Safety of Drinking Water.
Rainfall landing on a field of crops will carry a certain amount of soil, nutrients, and chemicals downstream or into underground aquifers. The more chemicals applied per acre, the greater the challenge in preserving water quality.
The Dead Zone in the Gulf of Mexico is the most graphic example of the enormous harm caused when farm chemicals flowing off of millions of acres congregate in the mighty Mississippi.