From Fox 4 News tonight:
"The Wise County town of Decatur is now under a water emergency. Crews working on the 380 expansion west of Decatur cut through the town's main water supply today. Two of the city's water towers were almost drained by the rupture. The water plant's storage was, though, intact. All residents are being asked to cut water use until the line is repaired."
So don't water your lawns.