What describes drilled wells?

Drilled wells are characterized as being deeply bored into the ground and typically lined with casing. This construction method allows for access to deeper groundwater sources, which generally have better quality water compared to shallow sources. The casing serves several important purposes: it prevents the well from collapsing, keeps surface contaminants from entering the groundwater, and protects the water supply from external pollutants.

In contrast, shallow wells, which may be more vulnerable to contamination from surface activities, are typically not drilled but rather dug or constructed differently. Wells that are driven into the ground utilize a different technique involving the insertion of piping, while construction using concrete blocks refers to a different type of well architecture that is not standard for drilled wells. Understanding these attributes is essential for identifying the distinctions in well construction and their implications for water quality and safety.