Pesticides can be found in rain, ground water, streams, rivers, lakes and oceans.
There are four major ways that pesticides can reach the water:
- it can drift outside of the area of where it was sprayed,
- it can leach through the soil,
- it can be carried as runoff,
- or it may be spilled accidentally.
Studies by the UK government show that pesticide concentrations exceed those allowable for drinking water in some samples of river water and groundwater.