2 v6 a# d% {1 |$ Fmay be the sump pump system was installed after basement flooding problem took place and not at the first hand during house construction, and for some unknown reason, they chose the spot where the wall between garage and the house is, possibly that may be easier to work at. This is only a guess, the real reason may be a mystery never understood. Water from the fridge will not be that much and no noise produced