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. 

For the month of November 2011, we had a total of 126 occurrences in our system: 102 leaks and 24 breaks. This number is up from October 2011, a warmer month, which saw a total of 96 occurrences.

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

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