A boil order for parts of Calverton Park, Ferguson and Hazelwood was lifted Sunday morning.
A water main break had placed about 3,000 customers in North St. Louis County under a boil order.
The water main break happened along North Florissant Friday night.
Missouri American Water said water quality tests confirm the water is now safe to drink.
Copyright 2017 KMOV (Meredith Corporation). All rights reserved.