My sump pit has 2 holes in the bottom and also the hole by which the drain tile gets in is not sealed (there is a space between the tile and the pit which allows the water to get in).
My pump kicks on just below the inlet. Since the water gets in from the holes, the inlet is always dry (no water coming from it). Since the water gets in from the holes, I presume that it prevents the water table to rise enough to reach the perimeter drain, but is it normal that the inlet remains always dry.
PS. My house was built in 2008 and I have never seen any water infiltration since I'm the owner.
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