The pump was installed on time, BUT, the installation did not include a container to force the water to separate from the surrounding media. As a consequence, when the pump activated, water and the material under the concrete was pumped out at the same time. The consequence of this was that the floor of my basement started to collapse as a consequence of the improper and incompetent installation. The approach to the work was both lazy and incompetent. In addition, I was quoted $300.00 for the installation of the pump, but when the bill arrived, it was for $750.00, despite the fact that the job went as was anticipated. I would not hire this company again.