I exposed a 3-4 inch section of an underground water line. QUESTION: How certain can I be that there is no leak within 2 or 3 feet of the exposed pipe, if there is no indication that the soil at the exposed pipe is no wetter than any of the soil I removed to expose the pipe? If there is a leak within 2-3 feet, shouldn't I see some water at the exposed section, if I let it sit overnight?