What does the term "screen" refer to in well construction?

The term "screen" in well construction refers to a component designed to facilitate the inflow of water into the well while preventing the entry of sand and other sediments from surrounding materials. Screens are typically made from metal or other durable materials with perforations or openings that allow water to flow through them, ensuring that the well can draw from an aquifer effectively without becoming clogged with particulate matter. This function is crucial for maintaining water quality and the efficiency of the well, as it ensures a reliable source of water while protecting the well infrastructure.

In this context, having a well screen is essential because it means that the well can operate optimally, providing clean water access without interference from debris or impurities. Properly choosing and installing a screen is an important aspect of well construction that directly affects both the performance and longevity of the well.