Editor's note: This article has been updated throughout.

The city of Sherman issued a boil order for portions of the city Wednesday following damage to a waterline from overnight storms. The break led to widespread low pressure and outages across the city in areas served by ground water early Wednesday morning.


“Due to a major water main break causing reduced system pressure, the Texas Commission on Environmental Quality has required the city of Sherman … public water system to notify all customers to boil their water prior to consumption,” the city said in a press release Wednesday.


City officials described the area affected by the outage as the eastern side of Sherman, which includes areas along both sides of U.S. Highway 75, but generally to the south of U.S. Highway 82. Areas served by surface water were not impacted by the outage.


The water main was fixed by mid-morning and service resumed, but officials said the boil order was expected.


The water main break occured on the same pipe that burst in December, and left some areas of Sherman under a boil order for nearly two days. Both breaks appeared to be caused by heavy rains that washed out the soil beneath the water line and caused a collapse, Community and Support Services Manager Nate Strauch said.


With the repeated breaks, Strauch said the city will be looking at relocating the line so the outage doesn’t happen again in the future.


City officials are asking residents to boil water prior to consumption. Water should be brought to a roiling boil and cooled prior to use in drinking, cooking or ice making to ensure any harmful bacteria or microbes are destroyed. In lieu of boiling, bottled water can be purchased.


Water samples from the Sherman system will need to be tested and found free of outside contaminates before the boil order can be lifted. Generally, this takes at least 24 hours to complete.