Basement Waterproofing - Sump pump with open pit in DDO
The main water infiltration came from under the slab, especially from the perimeter of the basement since this was the easiest way for the water to flow in. However, the sump pump did not help at all.
An open pit like this is much like a humidifier, causing a lot of humidity in the basement especially if it drains the water from a french drain. Not having a backup system for the pump is a major risk any home owner could take.