Granada Hills/Porter Ranch Water Incident Update #4 | August 6, 2025 – PM Update
A Boil Water Notice is in effect for affected customers in portions of Porter Ranch and Granada Hills as a result of repair work to a broken valve serving the area.
The Boil Water Notice can be accessed by clicking this link: BOIL WATER NOTICE FOR PORTIONS OF PORTER RANCH AND GRANADA HILLS (ladwpnews.com).
Effective immediately, customers located within the affected area need to boil their water before using it to drink, cook, make ice cubes, prepare food such as washing vegetables, or to brush teeth until further notice. This is required to ensure safety and public health. While most customers in the area are without water service, some at lower elevations may still have water service at a low pressure.
More information regarding this incident can be found at www.ladwp.com/WaterQuality which includes the Boil Water Notice as well as an interactive map to enter your address if you need to check if the Boil Water Notice applies to you. Regular updates related to this incident are also being updated on our newsroom at www.ladwpnews.com.
BACKGROUND ON WATER LOSS AND ONGOING REPAIR WORK
On Tuesday afternoon, August 5th, while water system crews were making repairs at a pump station that connects to a 10-million-gallon water tank that serves the area, a valve that controls the flow of water broke during repairs and failed to reopen. As a result, the water flowing into a 54-inch-diameter pipe serving the area was cut off.
This has led to a water service outage in the general area bounded by Rinaldi Avenue to the south, Balboa Blvd to the east, De Soto Ave to the west and the foothills & hills to the north. For specific boundaries, please refer to the map below
LADWP water crews continue working to remove the broken valve to restore water flow to the tank. The location of the valve is over 20 feet below ground where two oil pipelines, a critical fiber optic line, gas line and large boulders have complicated repair efforts. Excavation can only begin after the pipelines are cleared. Current estimate for repairs could take through this weekend to be completed.
LADWP crews are also taking multiple approaches to come up with a temporary solution to route water back to the trunkline sooner as they continue to make permanent repairs. One solution includes pumping water from a nearby Metropolitan Water District of Southern California supply, into LADWP’s 54-inch trunkline supplying the area.
SUPPORT FOR CUSTOMERS
To support our customers, LADWP has setup bottled water distribution sites to provide drinking water to customers. At these same locations, we will also provide portable showers, handwashing stations, mobile laundry units, and portable toilets. As of 4pm, LADWP staff have distributed 11,200 cases of water to area residents and businesses, which total 270,000 bottles of water.
The locations in Granada Hills and Porter Ranch are:
- Holleigh Bernson Memorial Park, 20500 Sesnon Blvd, Porter Ranch, CA 91326
- O’Melveny Park, 17300 Sesnon Blvd., Granada Hills, CA 91344
- Intersection of Tampa Ave. And Sesnon Blvd. on the border of Northridge and Porter Ranch
Drinking water is available for pickup 7AM and extended through 9PM today and will remain available in the following days until service is restored.
We are also making arrangements to provide non-potable water to help customers flush their toilets and will have more information available soon.
LADWP is working with the Department of Aging, Department on Disability and the Red Cross to provide support to customers who need special support, including seniors and customers with disabilities and functional needs and will provide additional information as soon as it is available.
We recognize the loss of water to the area is a major inconvenience to our customers and we are doing everything we can to bring back the water to the area as quickly and safely as possible.
We want our customers to know that our crews will work around the clock until repairs are made and we will continue to provide support and information throughout this incident
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