and there is no evidence of water seepage there is nothing to worry about. I’m too lazy to look it up now but there is a product you cans buy that is basically a big hypodermic needle that will inject an epoxy seeker in cracks. If it is a hairline crack you probably cans even insert that. If you were able to see the basement walls of 95% of the homes in Utah you would see cracks ranging from hairline to 1/4 inch cracks. It’s what concrete does over time.