Our first house had a few small cracks in the poured foundation. Talked to a foundation guy and he said even if you patch it, if you have a water issue it will finds it way through the cement/floor anyway. How old is the house? Cosmetic cracks are not unusual, look at side walks and driveways.

I would make sure that your foundation around your house is graded/slopes "away" so water doesn't collect next to your house. Do you have a sump pump?

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