Rhode Island Journeyman Plumber Practice Exam

Which type of well does not require a casing?

1. Driven well

2. Bored well

3. Artisan well

4. Shallow well

The correct answer is: Driven well

A driven well does not require a casing because it is constructed by driving a pipe into the ground until the desired water table is reached. The pipe itself often serves as the casing, which helps stabilize the well and protects it from surface contaminants. Driven wells are typically less deep than other types of wells and are often used in areas where the groundwater is relatively close to the surface. In contrast, bored wells, artisan wells, and shallow wells typically necessitate some form of casing to ensure structural integrity and water quality. Bored wells, for example, require a casing to prevent the walls from collapsing and contamination from surface water. Artisan wells, which are drilled into confined aquifers, also need casing to manage water flow and pressure effectively. Shallow wells may have casing to avoid sediment and pollutants entering the water supply. Thus, the unique construction method of driven wells allows them to operate without the need for additional casing, distinguishing them from the other types mentioned.