LEAK SEASON IS HERE – Cold Weather Exposes Pipes to Risk of Breaks

The age of much of the LADWP water distribution system results in periodic breaks and leaks. As overnight temperatures across Los Angeles dip into the low 30s and 40s, LADWP reminds customers that with cold weather comes an even greater increase in the likelihood of pipe breaks.

During the winter months, the LADWP water system typically experiences an increase in water main breaks due to colder water entering the distribution system from the Eastern Sierra Nevadas. The colder water causes the pipes to shrink very slightly, known as thermal contraction, which can cause  some pipes to break. Winter leaks occur most frequently in the early morning hours (3-5 a.m.) when pressure is highest because of minimal use and temperature is coldest.

LADWP has already experienced an uptick in leaks with crews responding to more than 30 leaks this week, compared to 15 leaks total for the previous week. The leaks occurred throughout the city, with the highest concentrations in the Westside and Valley. LADWP crews responded promptly to the main leaks and completed repairs that same day.

To report a main break in your area, please call 1-800- DIAL DWP (1-800-342-5397).

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