The Board of Water Supply says crews were working to repair a broken 8-inch main on Mokulua Drive in Lanikai on Wednesday.
It was initially reported as a leak at about 11 p.m. Tuesday night. Six homes were without water.
A water wagon was placed at 831 Mokulua Drive. Traffic was being contraflowed into Lanikai using the one lane of Mokulua Drive that was open.
Water was restored to all customers by 10:30 p.m. The road was repaired and reopened overnight.