Fort Bragg officials released all non-essential personnel after the break. Once it was repaired, they flushed and sampled the lines for 24 hours.
Officials tell ABC11 a 36-inch PWC pipe ruptured near the old water treatment plant.
The water main break forced several shutdowns on post, including all Child Development Centers.
READ MORE: FORT BRAGG RELEASING NON-ESSENTIAL PERSONNEL BECAUSE OF WATER MAIN BREAK