Water Sampling and Testing Continue in Efforts to Lift Boil Water Notice for Granada Hills & Porter Ranch Customers – August 12, 2025 AM Update

Incident Update #15

August 12, 2025 - AM Update

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Latest Updates

• Water quality testing continues in affected areas of Granada Hills and Porter Ranch

• Boil Water Notice remains in place

• Mobile laundry, shower, restrooms have closed permanently

• Distribution of bottled water and recycled water (for irrigation) will continue until Boil Water Notice lifted

LADWP's Water Quality Division staff continues to collect and test water samples from the three pressure zones in Granada Hills and Porter Ranch that have been under a Boil Water Notice since Wednesday, August 6. LADWP submits the testing results to State Division of Drinking Water (CA-DDW) to confirm the drinking water is safe in order to cancel the Boil Water Notice.

Testing follows water restoration to the affected area early on Monday, August 11, with customers now able to resume using their tap water, as long as the water is boiled before drinking.

As LADWP staff continue rigorous testing to verify water quality, consumers are strongly advised to follow the below important health and safety instructions out of an abundance of caution. These recommendations remain in place until the CA-DDW gives the all-clear for LADWP to lift the Boil Water Notice.

• ONLY USE BOILED TAP WATER OR BOTTLED WATER FOR DRINKING AND COOKING PURPOSES until further notice.

• If using tap water, bring it to a boil, let it continue to boil for one (1) minute, and let it cool before use. This also applies to water that is used for brushing teeth, making ice cubes, and food preparation, such as washing produce.

• Affected customers can use tap water without boiling it first for non-potable uses, including for showering, toilet flushing, and landscaping.

Prior to Monday morning's water service restoration, LADWP customers in the Granada Hills and Porter Ranch area were without water for multiple days after a broken valve prevented water from flowing to the 10-million-gallon water tank serving the area. LADWP crews were able to complete complex repairs to restore water service, by first excavating and cutting out the broken valve, then welding in a new section of pipe that allowed water to flow normally into the affected water tank.

To support communities impacted by this water incident, LADWP mobilized a range of support services. These included the distribution of bottled drinking water, recycled water for non-potable uses such as irrigation and toilet flushing, and deployment of mobile units offering shower and laundry access to residents.

SUPPORT FOR CUSTOMERS

Now that tap water service has been restored, LADWP has permanently closed mobile showers, laundry facilities, and restrooms. However, LADWP will continue to provide bottled water distribution, as well as recycled water at the following locations for customers still interested in using non-potable water for irrigation, until the Boil Water Notice is lifted.

1. Holleigh Bernson Memorial Park, 20500 Sesnon Blvd, Porter Ranch, CA 91326
   • Water bottle distribution, recycled water distribution
2. O'Melveny Park, 17300 Sesnon Blvd., Granada Hills, CA 91344
   • Water bottle distribution, recycled water distribution
3. Intersection of Tampa Ave. and Sesnon Blvd. on the border of Northridge and Porter Ranch
   • Water bottle distribution, recycled water distribution

We encourage our vulnerable customers, including seniors, and customers with disabilities and functional needs who are unable to visit the bottled water distribution centers, to call LADWP's call center at 1-800-DIAL-DWP (1-800-342-5397) to "Report an Outage" and request to speak to a customer service representative.  

For individuals who are Deaf, hard of hearing, or have a speech disability, dial 711 to connect with California Relay, or call 1-800-HEAR-DWP (1-800-432-7397) for TTY. 

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