Grand Prairie residents are being asked to conserve water for the next day after one of the main water supply lines into the city ruptured Monday.
The affected water main is the biggest line from Dallas to Grand Prairie and provides 90 percent of the city's water, according to Ron McCuller, director of public works.
"This is an emergency," he said. "We need to take drastic action to make sure we have fire protection because fire risk is high at this time of year."
The break is on Camp Wisdom Road between Carrier Parkway and Belt Line Road.
The city, which will rely on wells, will only have half of its usual water supply.
Grand Prairie is asking residents to turn off their sprinklers and only use water that is necessary.
Resident Clara Tengwall said she plans to not run the dishwasher and won't run the water outside or water the plants.
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McCuller thinks the water main ruptured because of the weather and soil shifting and drying out. The city will know more once crews work on fixing it.
Repairs are expected to take at least 24 hours.
