Water Line Repair in Los Angeles

What is the main water line, and how is it different from repiping?

Your main water line is the single buried pipe that carries water from the city meter into your house. It is not the same as repiping, and it is not a slab leak. That difference matters, because each job lands on a different page and a different fix.

Repiping replaces the interior pipes that branch to each faucet, shower, and toilet. A slab leak is a break in a pipe under your concrete slab. The main water line sits outside, before the water reaches your walls. So water line repair Los Angeles work means fixing that one buried supply pipe.

Not sure which you have? If the trouble is inside the walls, see our repiping page. If water pools under the floor, our slab leak repair team handles that. This page covers the supply main from the meter to the house.

Here is a common LA scene. You spot a soggy strip of lawn between the sidewalk and your front door. The grass there stays green and wet even in a dry August. That wet line often traces the path of a leaking water main.

What are the early warning signs of a supply line leak?

The clearest signs are a wet or soggy patch in the yard, low pressure at every fixture, a water bill that jumped, and muddy or discolored water. Any one of these can point to a leaking main under your yard.

• A wet or soggy patch in the yard, often in a line from the meter
• Low water pressure at every faucet, not just one
• A water bill that jumped with no change in your habits
• Muddy, rusty, or discolored water from the tap
• The sound of running water when every fixture is off
• A dip, sinkhole, or eroded spot in the yard or driveway

One clue on its own is weak evidence. Two or three together usually mean the buried main is leaking. Low pressure at every tap is a strong hint, because a single clogged faucet only affects one spot. When the whole house drops, water line repair Los Angeles is worth a call.

What makes a buried service pipe fail in LA?

Age, corrosion, and ground movement break most water lines here. Old galvanized steel and early plastic poly pipe corrode and crack with time. Tree roots wrap and crush the pipe. Shifting soil and copper pinhole leaks finish the job.

Los Angeles has a lot of old housing stock. Many homes still run on galvanized or poly service lines from decades ago. Galvanized steel rusts from the inside until pressure drops. Older poly pipe grows brittle and splits.

Roots cause plenty of breaks too. A thirsty ficus or pine will find a tiny weep and grow into the crack. Then LA ground shifts in dry spells and small quakes, which strains the pipe until it fails.

Who pays for what? The utility owns the line from the water main to the meter. You own the line from the meter to your house, so that side is your repair. LADWP handles the city side for most of Los Angeles.

That means water line repair Los Angeles work almost always covers the customer side, from the meter to the wall. We confirm which side leaks before we quote, so you never pay for a repair the city owns.

Trenchless or open trench: which water line repair is right?

You can replace a water line two ways. Trenchless methods like pipe bursting and directional boring pull new pipe underground with little digging. Open trench digging exposes the whole line in one long cut. Each has a place, and the right method depends on your yard.

Trenchless pipe bursting feeds a new pipe through the old one and splits the old pipe outward. Directional boring drills a fresh path underground. Both need only two small access pits, so your lawn, driveway, and mature trees mostly stay put.

Water line replacement methods, typical range for the Los Angeles market

These are typical Los Angeles ranges for orientation, not a quote. Every job is priced by its own conditions, so your exact number comes from a free on-site look. Get a free estimate in minutes, or call (818) 421-5290.

So which wins? Open trench is often cheaper for a short run or a single break near the surface. Trenchless costs more up front, but it saves your hardscape and cuts the cleanup. This is the water line repair Los Angeles homeowners rely on when they want to protect the yard. We walk you through both before you choose.

How much does water line repair cost in Los Angeles?

Water line repair Los Angeles costs depend on the fix. A spot or pinhole repair runs $350-$900 in the typical range for the Los Angeles market. A larger main line repair runs $500-$2,500. A full replacement runs $1,500-$5,000 or more, and trenchless carries a premium.

Water line repair costs, typical range for the Los Angeles market

These are typical Los Angeles ranges for orientation, not a quote. Every job is priced by its own conditions, so your exact number comes from a free on-site look. Get a free estimate in minutes, or call (818) 421-5290.

What moves the price? The length of the run, how deep the pipe sits, and whether it crosses a driveway or mature trees. Trenchless costs more than a short open trench, but it saves your hardscape and the cost to rebuild it.

One more thing. If low pressure is the real problem, a failing pressure regulator may be the cause, not the buried line. That is a separate part and a separate price. We test it first, so you do not pay to dig up a line that is fine.

How long does water line repair take, and can I stay home?

Most water line jobs take one day. A spot repair is often done in a few hours. A full trenchless replacement usually runs one day, and an open trench can take one to two. You can stay home, though we shut the water off for part of the job.

1. Locate and priceabout 1 to 2 hours

   We find the leak and trace the line, then hand you a written price.

2. Access the lineabout 1 to 3 hours

   We dig two small pits for trenchless work, or open a trench for a direct repair.

3. Replace or repairabout 2 to 5 hours

   We pull new pipe through, or fix the bad section, then connect it at the meter and the house.

4. Pressure testabout 30 minutes

   We turn the water back on and test under pressure to confirm the leak is gone.

5. Backfill and clean upabout 1 to 2 hours

   We fill the pits or trench, restore the surface, and walk you through the work.

Will you lose water? Only while we cut over to the new pipe. We plan that shutoff with you first, so you can fill a few jugs.

We schedule every water line repair Los Angeles appointment around your day when we can. For a burst main that cannot wait, someone answers 24/7. Either way, you know the plan before we start.

Copper, PEX, or HDPE: which pipe material lasts longest?

For a new water line, we use copper, PEX, or HDPE poly. Each one lasts for decades. Copper is proven and rigid. PEX is flexible and resists scale. HDPE poly is tough and comes in one continuous piece, which makes it ideal for trenchless pulls.

Which should you pick? For a trenchless replacement, HDPE poly is the usual choice, because one long piece pulls cleanly through the ground. For a short open trench, copper or PEX both work well. We match the pipe to the method and your soil.

What about the old pipe? If your home still has galvanized steel or early poly, we replace the whole run rather than patch it. Patching old galvanized just moves the next leak down the line.

A new supply main pairs well with fresh interior pipe. If your inside pipes are old too, ask about our residential plumbing team and a full repipe.

Who does water line repair in the San Fernando Valley?

A+ Electric & Plumbing, a licensed electrician and plumber serving Los Angeles and the San Fernando Valley, handles water line repair Los Angeles homeowners count on. We cover the whole Valley. Because we hold both trade classifications, one team digs, replaces, and reconnects your line. One call, one schedule, one invoice.

Check us out before we start. Our CSLB license is #942404. Licensed work means we do the repair to code and stand behind it, and correct anything an inspector flags on our workmanship at no charge.

Here is where one team pays off. A new water line sometimes runs near a buried electrical feed or a sprinkler controller. We handle both trades, so we do not stop and wait on another contractor.

From Sherman Oaks to Woodland Hills, that keeps your job moving. Ready to stop the leak? Call (818) 421-5290 or Get a Free Estimate, and we will schedule a visit fast.

See our full range of plumbing services in Los Angeles while you are here. We cover the Valley six days a week. And for a burst main after hours, someone answers 24/7.

Frequently asked questions