filter, wells
Sands, gravels, or fibrous materials placed around a well screen or perforated casing to increase permeability near the well and prevent unwanted aquifer particles from entering the well.
Authorization Path: 2.4.5.2.20.15
Sands, gravels, or fibrous materials placed around a well screen or perforated casing to increase permeability near the well and prevent unwanted aquifer particles from entering the well.
Authorization Path: 2.4.5.2.20.15