The risk of source water contamination is becoming increasingly prevalent!
Contamination from agricultural run-off
Agricultural pollution refers to biotic and abiotic by products of farming practices that result in contamination or degradation of the environment and surrounding ecosystems, and/or cause injury to plants, animals, humans and their economic interests.
The agricultural pollution comes from a variety of sources, ranging from point source pollution (from a single discharge point) to more diffuse, landscape-level causes, also known as non-point source pollution.
The use of pesticides, herbicides, fertilizers and other agrochemicals has increased hugely since the 1950s. The amount of pesticide sprayed on fields has increased 26-fold over the past 50 years.These chemicals don't remain on the fields they are applied to and lead to pollution of adjacent land, rivers and wetlands.
The fertilizers and pesticides that are carried away in run-off from fields to adjacent rivers and lakes and also contaminate groundwater. Long term, these chemicals eventually end up in the aquatic environment e.g. the ‘dead-zone’ at the mouth of the Mississippi River in the Golf of Mexico.
Contamination from industrial farming holding ponds
The contents (animal waste) of the holding tanks utilized in large scale Industrial farming can contaminate the ground water which then contaminates the well water in the local vicinity with fecal coliform bacteria.
People living near or down-stream from farms are at risk.