We recently installed a Liberty ejection system for our basement bathroom. In order to install this, the plumber dug out our foundation, installed the system, and then replaced the cement. In 30 years of home ownership, we have never seen a drop of water in basement. Once this bathroom was installed, we have gotten water twice (about 0.5 inch of water in the entire basement). Our general contractor has recommended we remove the Liberty system, fill the holes with hydraulic cement applied very thick, and to go with an above-ground basement toilet system (such as the systems with the elevated toilet).
We are very nervous about getting water again and the effectiveness of the hydraulic cement in keeping water out. Does anyone have any experience with this or any other advice on how to keep water out? We don't want to re-finish our basement until this is resolved. Thank you!