Why are bored wells more susceptible to contamination?

Bored wells are more susceptible to contamination primarily because they are constructed close to the water table. This proximity means that any pollutants present in the surface water, soil, or adjacent areas can easily seep into the well. Since the water table is often affected by agricultural runoff, septic systems, or other contaminants found near the surface, the shallow depth of bored wells provides a direct pathway for these pollutants.

Additionally, bored wells tend to have less of a protective geological barrier compared to deeper wells, which may pass through several layers of soil and rock that can naturally filter contaminants. This increased vulnerability to surface contaminants is a significant reason why proper construction, siting, and maintenance of bored wells are essential for ensuring safe drinking water.