Dewatering

On a construction site, this dewatering may be implemented before subsurface excavation for foundations, shoring, or cellar space to lower the water table.

The international business research company Visiongain valued the global dewatering pump market at $6.4 billion in 2018.

[3] Deep wells can be installed in a ring around an excavation to lower the water level and maintain a safe, dry site.

Several equations can be used to design deep well dewatering systems, however many of these are based on empirical data and occasionally fail.

Practice and experience, along with a firm understanding of the underlying principles of dewatering, are the best tools for designing a successful system.

[6] Wellpoints are small-diameter (about 50 mm) tubes with slots near the bottom that are inserted into the ground from which water is drawn by a vacuum generated by a dewatering piston pump.

Since these soils have a very low permeability, dewatering in a traditional sense (gravity flow into an abstraction well) may prove very costly or even futile.

Dewatering of a site improves safety by preventing the formation of mud and eliminating hazards to electrical equipment posed by water.