New Orleans officials lifted the precautionary boil water advisory for much of New Orleans Uptown neighborhoods Monday afternoon.
A major water main break Saturday prompted the advisory.
Sewerage and Water Board officials say no evidence of contamination was found in the water system.
"Customers who have not used their water supply during this precautionary boil water advisory are advised to flush their internal and external plumbing by running water through their system for several minutes," the utility advised.
Officials declared an emergency to expedite the repair process to the 48-inch main.