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Professional Plumbing Service

Main Water Line Repair in San Diego County and the Temecula Valley

Your main water line is the pipe that carries water from the meter, usually near the street, to your house. Pipe Dream Plumbing Co. repairs and replaces main water lines across San Diego County, the Temecula Valley and the Inland Empire.

Thomas, lead tech at Pipe Dream Plumbing, standing next to the company van

By Thomas, Lead Tech, over 20 years of plumbing experience. Last updated:

The main water line is the pipe that runs underground from your water meter to your house and carries every drop of water you use. You need it repaired when it leaks, breaks or has corroded enough to cut your pressure, and replaced when it keeps failing. Our crew does that work all over San Diego County, the Temecula Valley and the Inland Empire, with a flat, written price before anyone picks up a shovel.

Here is the part that confuses many homeowners: you own that line. The water district owns the meter and everything on the street side of it. From the meter to the house, the pipe is yours, so a leak there is yours to repair, and a leak on the street side is the district's.

The exact dividing point varies a little by district, usually at the meter or at the customer shutoff valve right beside it. The section below spells out what each district we work with says.

Flat, written price before work starts.

What are the signs of a main water line problem?

A wet spot in the yard that never dries: A leak in the main line often shows up as soggy ground, a puddle or unusually green grass along the path from the meter to the house.
The meter moves with every tap off: Turn off everything inside and out, then watch the meter's leak indicator. If it moves, water is leaking somewhere on your side.
Low pressure at every fixture: A leak or a badly corroded main line can starve the whole house. Our post on low water pressure covers the other causes.
A water bill that jumped: Underground leaks can run for a long time before they surface. A bill that rises with no change in use is often the first clue; see why is my water bill so high.
Rusty or dirty water from every tap: Old galvanized main lines rust from the inside. If all the taps run brown, the main may be part of it.

How do we repair or replace a main water line, step by step?

1

Confirm it is your line

We check the meter and the leak indicator, then shut the house valve to see whether the leak is between the meter and the house. If it is on the street side, we tell you to call the district.

2

Find the leak

We trace the line and use listening equipment to narrow down where water is escaping, so only the right spot is dug.

3

Give you the options

A single leak on a sound line can be a spot repair. A line that is old, corroded or has leaked before is usually worth replacing end to end. You get both prices in writing.

4

Repair or replace

For a repair we expose and fix the damaged section. For a replacement we run new pipe from the meter connection to the house, and replace the house shutoff if it is due.

5

Test, restore and backfill

We pressure-test the line with the trench still open, check the meter with everything off, then backfill and restore the water.

Where does your side of the water line start?

At the meter, in plain terms. The City of San Diego says the property owner is responsible for any part of the water system from the meter on. Sweetwater Authority says the property owner must repair, or hire a plumber to repair, any leak past the meter. Eastern Municipal Water District puts it this way: the street side of the meter is EMWD's, and the customer's responsibility is beyond the meter's customer shutoff valve. Rancho California Water District installs and maintains the line, valves and meter up to and including the customer service valve, and your system starts on the discharge side of that valve. If you are not sure where the line falls at your address, your district can tell you.

Should you repair the main line or replace it?

Repair a single leak on a line that is otherwise in good shape, especially a newer line with a damaged section from digging or roots. Replace it when the pipe is old galvanized steel, when it has leaked more than once, or when it is narrowed enough to hurt your pressure. A replacement also gives you a chance to put a new shutoff at the house and check the pressure regulator.

What if the leak is on the district's side?

Then the district repairs it, at its cost. Call the number on your water bill. We can confirm which side of the meter a leak is on before you spend anything on a repair you do not owe.

How does a new main line connect to the house?

At the house end, the new line joins the house piping through a shutoff valve, and often a pressure regulator. If the house piping beyond that point is old too, repiping the house can be planned at the same time, so the new main is not feeding worn pipe.

Who owns which part of the water line?

Who owns which part of the water line?
PartWho is responsibleWhat that means for you
Water main under the streetThe water districtCall the district for leaks there
Meter and meter boxThe water districtThe district repairs and replaces it
Line from the meter to the houseYou, the property ownerLeaks and replacement are yours
Pressure regulator and house shutoffYou, the property ownerPart of your system, tested and replaced by your plumber

Rancho California Water District's line runs up to and including the customer service valve; your side starts after it. Other districts draw the line at the meter.

What affects the cost of a main water line repair?

Every yard is different. These are the things that move the price:

Repair or replacement
One section is a much smaller job than the full run from the meter to the house.
Length of the line
A house close to the street has a shorter line than one set far back on a large lot.
What is on top
Lawn is simpler to open than a driveway, a walkway or mature landscaping.
Depth and soil
Deeper lines and rocky or hard soil take more digging.
House shutoff and regulator
Replacing a seized shutoff or a failed regulator at the same time is priced separately.

Flat, written price before work starts.

What does our main water line repair & replacement service include?

Leak testing on the main line, location of underground leaks, spot repairs on a damaged section, full replacement of the line from the meter to the house, new house shutoff valves, and pressure regulator checks where the line meets the house.

Benefits of Our Main Water Line Repair & Replacement Service

Clear answer on what is yours and what is the district's
Leak found before the yard is dug
Repair or replacement priced side by side
New shutoff at the house when it is due
Pressure-tested before the trench is closed
Experienced, insured plumbers

What maintenance keeps problems from coming back?

Know where both your house shutoff and the meter box are, and keep the meter box clear of plants and soil.

Check your meter's leak indicator once in a while with everything off. It is the fastest way to catch an underground leak.

Before you plant trees or dig in the front yard, find out where the water line runs.

Common Questions

What do homeowners ask about main water line repair & replacement?

Who is responsible for the water line from the street to my house?

The water district is responsible for the meter and the street side. You are responsible for the line from the meter to your house. The exact point varies a little; Rancho California Water District's responsibility runs up to and including the customer service valve beside the meter.

How do I know if my main water line is leaking?

Turn off every tap and appliance and watch the meter's leak indicator. If it keeps moving, there is a leak on your side. A wet spot in the yard along the line's path, low pressure everywhere or a rising bill are the other clues.

Can a main water line be repaired instead of replaced?

Yes, when it is one leak on a line in good condition. If the line is old galvanized steel, has leaked before or is restricting your pressure, replacing it end to end usually makes more sense. We price both.

Will my water be off during the repair?

Yes, while we work on the line. We plan the job so water is back on by the end of the day whenever the work allows.

Is the water meter my responsibility?

No. The meter and the meter box belong to the water district. If the meter itself is leaking, call the district.

Does a main line leak mean my house pipes are bad too?

Not always, but they are often the same age and material. If the main is old galvanized pipe, the house piping may be too, and our repiping page covers what replacing it involves.

Call us at (858) 330-2881, 8:00 AM to 10:00 PM, 7 days a week. A real person answers, you get a flat, written price before any work starts, and the work is guaranteed. Our plumbers work across San Diego County, the Temecula Valley and the Inland Empire. Request a quote online →

Our Service Area

Where do we offer main water line repair & replacement?

Our crew works all over the county and the Temecula Valley, out of our offices in La Mesa and Temecula. Pick your city below.

Service Areas

Which city are you in?

Find your city for local details and the right number to call.

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Thomas, lead tech at Pipe Dream Plumbing, standing next to the company van

Thomas

Lead Tech

Thomas is a San Diego native and the lead tech at Pipe Dream Plumbing, with over 20 years of experience in the trade. He serves San Diego County, the Temecula Valley and the Inland Empire, installing and servicing water heaters, clearing and repairing drain lines, and handling whole-home water treatment. He writes these guides to answer the questions customers ask on the phone every week.

About Thomas and Pipe Dream Plumbing

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