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Plumbing explained for Los Angeles homeowners

Short, practical guides on the plumbing problems LA houses actually have, written by Darnell Garber, Plumbing Explained Editor.

Plumber at a workbench sketching a water heater layout on graph paper next to a cutaway section of copper pipe with mineral scale

10 guides

All articles

Warm spot on a tile floor felt by a bare hand in a San Fernando Valley living room

6 minute read

Slab Leak Signs in San Fernando Valley Homes

A large share of San Fernando Valley houses built after World War II sit on concrete slabs with water lines buried underneath. When one of those lines starts leaking, the signs are easy to miss until the water bill or the floor gives it away.

Section of old galvanized water pipe beside new PEX and copper samples on a wooden table

6 minute read

Galvanized Pipes in an Older House: Patch, Partial or Full Repipe?

Galvanized steel water lines were standard in Los Angeles homes built before the 1960s, and plenty are still in service. If yours leak or the pressure keeps fading, you have three choices: patch the problem, replace part of the system or repipe the whole house.

Water spraying from a split pipe under a kitchen sink with towels and a bucket on the floor

7 minute read

A Pipe Just Burst: What to Do in the First 15 Minutes

Water spraying from a wall or ceiling turns an ordinary evening into a race. The first fifteen minutes decide how much drywall, flooring and cabinetry you lose, so this is the order we would follow if we were standing in your hallway.

Gas meter on the side of a Los Angeles house with a seismic shutoff valve and a wrench hung nearby

7 minute read

Seismic Gas Shutoff Valves Explained for LA Homeowners

A seismic gas shutoff valve closes your gas supply automatically when the ground shakes hard enough to break a line. Here's how the valves work, where Los Angeles requires them, and what to do when one trips.

Backflow test gauge kit open on the ground beside a green backflow assembly cage

6 minute read

Your Annual Backflow Test, Explained

That yearly letter from the water department asking for a backflow test isn't junk mail. Here's what the device on your property does, what the tester checks, why assemblies fail and what happens if yours does.

Site plan for a backyard ADU on a table with plumbing lines sketched in blue and red pencil

7 minute read

Planning the Plumbing for a Backyard ADU

The plumbing for a backyard ADU is decided long before the walls go up. Sewer depth, the size of your main water line and whether the unit runs on gas all shape the design and the budget, so settle them first.

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