[masraum]

Originally Posted by OldSpool87

Condensation on a cold water line?

That was my first thought. Condensation. If they are in the southeast, then it's probably very humid. If it's humid and the water in the pipes is cold enough, it could drip a lot, and in a cooler, humid environment under the home, the water won't evaporate quickly. But a leak due to the feed line to the fridge also seems like a good possibility.