Agricultural run-off become a very big concern because of fertilizer and pesticides. It can contain fertilizer and pesticides as a result of air-spraying these thing when farmers use them for growing vegetables and fruits. This run-off seeps into our water sources by leaking in the soil to groundwaters and/or entering streams as surface run-off.

Flora and fauna in agricultural areas are in highest risk for exposure to these contaminants to a number of factors. Population chooses their drinking from some private water supplies.

For understanding, these private supplies are not regulated under the Safe Drinking Water Act, so that it can be test on health standards which is need for. As a result, it is not monitored for maximum contaminant levels as public water systems are.

Because of there are agricultural run-off, so it is a very hard to control it. However, it is left a pollution for drinking water.

First of all, water contains pesticides which are a threat to health due to their inherent toxicity. There are a lot of types of pesticides and exposure depends upon many factors.

The next bad element in drinking water is nitrates. They are the major constituent of fertilizer which poses a health threat.

But it is not only bad elements can be make our water to unusable one, also it depends on using all agricultural materials. For example, over fertilization is a result of the common practice of combining the use of fertilizer and manure.

The next wrong using agricultural materials is crop specialization is the use of larger quantities of pesticides in order to maintain high productivity of a single type of crop.

And the last one the most inappropriate method for using agricultural materials in a wrong way is lack of crop rotation and cover crops. It is a result an erosion land and use of more fertilizer and pesticides.

These practices are not the only. There are various other practices which can reduction the impacts the agricultural industry has on our drinking water resources.