Deep Wells

Deep wells are an efficient and cost-effective dewatering solution, especially in high-permeability soils like sands and gravels. They are ideal for conditions requiring high pumping volumes or heads, making them essential when working with coarse-grained sands, gravels, and cobbles.

At Malcolm Drilling, we have the expertise and equipment to install deep well dewatering systems even in the most challenging subsurface conditions. Our modern fleet of drill rigs and specialized tools allows us to install wells through sands, gravels, cobbles, boulders, and rock—even under artesian conditions where groundwater is under hydrostatic pressure.

Deep wells are typically installed outside the excavation, but depending on the shoring system, they can also be placed inside a cut-off shored system. Equipped with electric submersible pumps (0.5–15 HP), these wells are connected via flex hoses to a common HDPE header pipe that directs water to the discharge location. Well spacing is determined by subsurface conditions and constructability, with Malcolm’s field expertise ensuring the most effective dewatering design.