Private hydrants · Fire service mains · City of Los Angeles
Two city offices touch a private hydrant
In Los Angeles, a private hydrant answers to the fire department and the water utility. Plan for both. On the fire side, LAFD Fire Development Services (part of the One Stop Permit Center) holds pre-development meetings, reviews plans, approves permits and sends inspectors into the field for new construction. LAFD's Fire Prevention Bureau handles business fire code enforcement. One of its units is called Hydrants and Access.
On the water side, the Los Angeles Department of Water and Power runs the city's water system. Talk to LADWP early about the connection your private main will need. Ask before the drawings are final.
The Los Angeles Fire Code sits in LAMC Chapter V, Article 7, and it has been built on the 2022 California Fire Code with local administrative changes, so confirm the current edition with LAFD before your design is locked. Codes change. Drawings should match the one in force.
What a hydrant installation includes
We install private fire hydrants and the pipe that feeds them. NFPA 24 is the standard for private fire service mains and their appurtenances, meaning the valves, fittings and hydrants that hang off the line. A typical scope covers:
- The hydrant, set at final grade
- The underground fire service main from the supply to the hydrant
- Control valves on that main
- The tie-in to the water supply, coordinated with LADWP
Bonnet color matters too. NFPA 291 sets a color code for hydrant bonnets by flow class, which lets an arriving engine crew read a hydrant's expected flow before they hook up a hose.
From drawings to a flowing hydrant
- Site walk. We look at the route.
- Plans to LAFD. Drawings go through Fire Development Services before anyone digs.
- Trench, pipe and set. The crew lays the main, places the valves, sets the hydrant and makes the connection to the supply, all to the drawings the fire department approved.
- Flush, test, sign-off. The new line is flushed and pressure tested. Then the field inspector looks it over.
- Flow test. An NFPA 291 flow test shows what the hydrant delivers. That result sets the bonnet color.
The work doesn't end at sign-off. NFPA 25 calls for private hydrants to be flow tested and inspected every year, and hydrants get struck, leak or stick over time. Read about fire hydrant maintenance in Los Angeles and fire hydrant repair in Los Angeles. Need extinguishers for the same building? See fire extinguisher service in Los Angeles.
Licensing for hydrant work in California
California work for 1 Pro Fire is performed by Hedrick Fire Protection, which holds C-16 (fire protection) and C-10 (electrical) contractor licenses and is licensed by the California State Fire Marshal under Title 19 for portable extinguisher service and for inspection, testing and maintenance of water-based fire protection systems.
Starting a project? Call (213) 568-0188 or email socal@1profire.com. Send the site address, a site plan if you have one, and any comments LAFD has already made on the project. More city services are on our Los Angeles fire protection page.
Hydrant questions from Los Angeles projects
Who reviews a new private hydrant in Los Angeles?
LAFD Fire Development Services. Start at the One Stop Permit Center.
Do you need to visit the site before an estimate?
Usually. A hydrant's cost depends on the pipe route, the connection point and what the approved plans call for, and none of those are easy to judge over the phone.
How often does a private hydrant need testing?
Once a year. NFPA 25 calls for an annual flow test and inspection.
My mailing address says Los Angeles. Is the site inside the city?
Not always. ZIPs 90022, 90023 and 90040 mostly cover East Los Angeles and Commerce, which fall under other jurisdictions, and 90058 is shared with Vernon. For those sites, see fire hydrant installations in Los Angeles County, or fire hydrant installations in Orange County for projects farther south.