Although it is very common for concrete basement floors to crack, the presence of hydrostatic pressure can turn floor cracks into water leakage problems.
Generally, the concrete floor of a basement provides no structural support for a foundation, and small cracks can be ignored. However, water pressure can build up under the floor and seep through the cracks. If this is the case, Mid America Piering recommends an interior drainage system in conjunction with a sump pump. This will alleviate water pressure and solve the problem, rather than simply patch it.