A Texas city has declared a water emergency and ordered its citizens to drastically cut back on water use.

Residents of Gunter, Texas, were informed in a letter from the municipal administration on Wednesday that the city’s water storage tanks cannot be replenished because of high water use and that the city may soon run out of water.

Residents were instructed to stop using any outside irrigation systems until further notice, as well as to reduce or stop using dishwashers, washing machines, shower and sink water, as well as any other unnecessary water consumption.

On Thursday, the city informed residents in a daily water update that while it could keep water levels for Gunter residents, the city is still subject to emergency water restrictions.

The letter claims that a mechanical problem with the wells is being aggravated, in part, by the intense heat.

“As communicated yesterday, water-wells are mechanical in nature and subject to failure when being run continuously. Wells are typically designed to run at 50-60% of the time. Due to extreme heat, drought conditions and water demand, these wells were running continuously which is why they continue to fail.”

Officials from the city detailed problems with two wells that they claim are being fixed, but added that a timetable for the work is not yet known.

City representatives advised Gunter residents to keep their water use low in the letter.

“Please continue all conservation efforts and do not waste water. Under no circumstances, until further notice, outdoor watering is NOT allowed. Limit your indoor water use to necessities. Refer to yesterday’s communication for specifics,” the letter further stated.