Wellpoint Dewatering

Wellpoint dewatering system

Wellpoint systems are used to lower groundwater levels to provide stable working conditions. They consist of a series of small diameter wells that are connected by a header pipe to a wellpoint pump. The pump creates a vacuum in the header pipe drawing water up from the ground.

Welpoints are typically installed along or around an excavation. The height to which water can be drawn by vacuum in this way is approximately 6 metres. To function at greater depths, well points can be installed in stages as the excavation proceeds.

Why Use Wellpoint Systems?

Wellpoint systems are particularly suited to dewatering for shallow foundations and excavations, so they are often used for pipeline trench work. A wellpoint system can be installed quickly in most ground conditions and they are easy to maintain.

With perhaps one of the most extensive and modern fleet of wellpoint installation equipment in the UK, WJ is well equipped to deal with all wellpoint requirements. Our highly qualified team have worked on projects ranging all over the UK from as far south as the Channel Islands to the north coast of Scotland and from the west of Wales to the eastern tip of Norfolk.

Range of application for wellpoint dewatering systems on construction projects (based on CIRIA 515, London 2000)