Seepage is likely the result of cracks in the foundation. These can be a result of poor drainage and too much hydrostatic pressure on the foundation. The most likely cause of cracks in foundation is time. You can prevent cracks from forming with simple preventative measures, and deal with old ones the same way. The primary concern is preventing standing water from forming.
A simple way to prevent cracks is by diverting water away from the foundation. This can be achieved with a sump pump, proper downspouts, and removing any standing water near the foundation cause by leaks. By simply ensuring that water flows away from the foundation, you can prevent cracks from forming and prevent seepage.
If your home is older and already has cracks, you can still prevent seepage from damaging your home. Ensure your sump pump is up to date and runs properly. If you don’t have a sump pump, consider installing one. It may seem costly, but you could prevent long term damage to your foundation and your basement.
You can also apply epoxy and tar to cracks to prevent more water from seeping in. This is not a long term solution, but can prevent water from coming inside. It is generally recommended that you do this before the spring.