What is the purpose of grout in well construction?

The primary purpose of grout in well construction is to create a waterproof seal. This sealing is essential to prevent surface water and contaminants from entering the well, thereby protecting the quality of the water extracted. By using grout, the annular space between the well casing and the surrounding rock or soil is filled, which effectively isolates the well from potential sources of pollution and ensures that groundwater remains safe for consumption.

While grout does contribute to the overall integrity of well construction, its main function is focused on sealing and preventing infiltration. This is critical for maintaining the purity of the water supply and compliance with health and safety regulations. Grout may not have a direct impact on enhancing water flow or filtering contaminants, which are secondary aspects of well design and operation.