Construction Intelligence
LADWP Granada water line replacement reaches approval milestone
LADWP’s estimated $200 million Granada Trunk Line replacement reaches an approval milestone. See the scope, timing and contractor questions.
LADWP Granada water line replacement reaches approval milestone
City of Los Angeles | October 20, 2026
An aerial view of the northern San Fernando Valley, including Porter Ranch and Granada Hills, photographed May 8, 2009. Archive image for geographic context.
“Leaving Los Angeles” by Brew Books / Wikimedia Commons / CC BY-SA 2.0. Image unmodified.
Geographic context only; this is not a photograph of the replacement project, its current condition or construction.
A roughly five-mile water-line replacement serving Granada Hills and Porter Ranch in Los Angeles has reached a new milestone. California’s CEQAnet posted a notice on October 16 recording LADWP’s October 13 approval of the Granada Trunk Line Replacement Project. The utility’s board agenda puts the estimated cost at $200 million. Approval notice, October 13 board agenda, item 7
For residents along the corridor, the project’s purpose is practical: replace a water-supply line that LADWP says has reached the end of its service life. Earthquake-resistant ductile iron pipe is intended to improve the system’s seismic resilience. LADWP project notice
What would change
The project covers approximately 26,411 feet of 48-inch pipe, primarily along Rinaldi Street. Its first section runs from Balboa Boulevard to Yolanda Avenue; the second continues to the De Soto Reservoir Regulator Station. The scope also includes replacement valves and manholes. Project scope
The existing line includes sections installed in the 1950s. LADWP’s environmental study identifies earthquake vulnerability and difficult maintenance access as reasons for replacement. The planned construction combines open trenches with underground pipe jacking at major crossings. Environmental study, pages 2 and 8–10
Approval and construction planning
The filing records environmental mitigation requirements and an adopted monitoring plan. The board agenda identifies Water Fund budgeting through fiscal year 2030–31. These records establish an approval milestone and cost estimate; the reviewed documents do not establish a construction-contract award. Approval notice, Board agenda
The May 2026 environmental study models Unit 1 construction beginning in July 2028. That remains a planning forecast, so contractors and residents should watch for updated schedules and implementation notices. Environmental study, page 5
What contractors should watch
BuildDetect’s assessment: the described work is relevant to underground-utility, shoring, trenchless-installation, traffic-control and paving specialists. Procurement details will determine whether those activities become outside contracting opportunities.
Questions worth tracking:
Which portions will LADWP perform directly, and which will be contracted?
How will construction be divided into packages?
When will procurement dates and updated construction schedules be issued?
Which traffic-management and restoration requirements will apply to each package?
Those questions are forward-looking, not announced bid opportunities.
For a broader guide to researching local project records, see BuildDetect’s Los Angeles permit-search guide.