Need plumbing help

I would be careful calling the water co. They may be forgiving right now but as posted here before, they could potentially give you a 5-10 notice and shut your water off. You would normally have an area in the yard that stays wet however sometimes when its close to the house, the water may follow to the foundation. Normally is about 4' deep so you I figure your basement isn't 8' deep or on a hill. Also being close to the home, you may be able to hear it hissing. To me, I would think it's a leaky foundation. Best thing is to get the drywall off at least 4' up. It will create mold issues you don't want anyhow and should be dealt with, then monitor the walls for wetness. Especially during rainy days. Not an easy remedy either way. Also check that the ground around the home is higher at least 3' out from the foundation. It helps it to run out from the home rather than down the walls. Check rain spouts are channeled away also.