How does water jet excavation work: A vacuum source is of vital importance to ensuring the completion of the water jet excavation process. This can come in the form of a displacement blower or a fan system, with the vacuum assisting the clearance of debris in a much faster manner. A displacement blower is able to move air over a much longer distance than is the case with a fan system. However, the latter is more efficient due to the greater depth cleaning that is included in the excavation proce