Wellpoint systems are used to lower groundwater levels to provide stable working conditions in excavations. Wellpoint systems are particularly suited for shallow foundations, utility and trench work dewatering.
A wellpoint system consists of a series of closely spaced small diameter shallow wells. The wellpoints are connected to a common header pipe and are pumped with a high efficiency vacuum dewatering pump. For drawdowns in excess of 15-feet, further stages of wellpoints are required and installed at successively lower levels as excavation proceeds.
