Serving Granite City
Groundwater & Basement Water Intrusion in Granite City, IL
Basement seepage, failed sumps, and hydrostatic pressure against the foundation are extracted and dried, and the path from the ground is identified so the loss does not repeat. Groundwater and basement seepage are extracted and dried only after the path from the soil is identified — a wall, a slab, a drain, or a failed sump. Drying the interior without stopping that path returns the same water to the same floor.
Frequently asked questions
The river did not flood but our basement did.
That is interior drainage, and it is a distinct mechanism from a levee overtopping. When the river runs high, the district cannot let interior runoff flow out by gravity, so it has to be pumped. Rain falling inside the protected area during that period accumulates until the pumps get to it. The levee can be doing its job perfectly while your basement takes water, and the two facts are not in conflict.
Is a sump pump enough in this soil?
It is necessary and it is often not sufficient on its own. On floodplain alluvium with a managed table, water arrives across the whole foundation rather than at one point, so the pump needs a drain system feeding it rather than just a pit in the corner. Capacity matters too, since the pump may run for days rather than hours. And it needs backup power, because the periods of highest demand coincide with storms.
Does anything on our own property change the risk?
Less than in most places, but not nothing. The regional water table is set by the district and the river, and no lot-level work changes that. What you can control is how quickly water leaves your own foundation once it arrives, and whether the basement is set up so that an event is a nuisance rather than a loss. Raising mechanicals and avoiding finished space at the lowest level are the highest-value decisions here.
The Granite City overview carries this FAQ with the city research.