More than 150,000 residents outside of Washington, D.C., have been told to stockpile water for as long as five days during the hottest week of the year as crews repair a failing water main.

The 54-inch water main that supplies a section of Prince George’s County in Maryland was taken offline late Tuesday night because wires inside the water main are starting to break down and are in desperate need of repairs. Water in the system should last another 14 hours after the water main is taken offline but County Executive Rushern Baker said people should prepare for taps to run dry later today.

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