I assume there is a typo in your post, do you mean to say there is "no standing water" in your basin? You do say the basin is dry.

The water level in your basin reflects the water table around the house. The water table around the house is controlled by the amount of rainfall you get, the type of soil you have, and the geometry of the surrounding areas. If you are not getting water in your sump pit, and the basement is dry, you are OK, and there is nothing to fix. As to where the groundwater goes, well groundwater moves downgradient, which usually (but not always) follows the slope of the land above. The speed that groundwater flows is controlled by the permeability of the soil, i.e. groundwater moves faster through gravel than through clay. It would take a PhD thesis, and enourmous amounts of money, to determine the exact path the groundwater flows from your house. I wouldn't worry about it, as long as the perimeter drain that collects the water and routes it to your sump was properly installed, you are fine.

 

Thanks Daniel, your explanation surely makes sense.
Yes, there are a couple of inches of standing water in the basin.
What baffles me that all houses around me (same height, basement & build and very close by) have the pumps running all the time. Also, we had 3 x the rainfall/ snow this year compared to last year and my basin was full (and pump going) all the time. This year the water seems to go elsewhere, although some neighbourhoods have severe flood problems.