Repiping replaces the water supply lines in a home. It is a big job, and it is worth doing only when the pipes are failing in a pattern rather than at one point. Our role in a first visit is to tell you which situation you are in.
Signs your supply pipes may be at the end of their life
Repeated leaks
A second or third failure within a short time.
Rusty or discolored water
Especially at first use in the morning.
Falling pressure
Fixtures that used to run strong now trickle.
Pinholes or green stains
Copper showing pitting or buildup on the outside.
Old galvanized pipe
Steel pipe that corrodes from the inside and narrows over time.
Rising bills
Water lost to leaks you cannot see.
Repiping versus repairing
| Situation | Usually repair | Usually repipe |
|---|---|---|
| One leak in sound pipe | Spot repair | Not needed. |
| Several leaks in a few years | Possibly | Often the better value. |
| Galvanized supply lines | Short-term only | Typical long-term fix. |
| Slab leaks recurring | Reroute one line | Replace the system. |
Our slab leak repair page explains when rerouting one line is enough and when the whole system needs attention. We discuss each case, because a smaller repair now can be right if the rest of the pipe is healthy.
Wondering if it is time?
Call and describe the leaks and symptoms.
What a repipe involves
Inspect
Look at pipe material, age and where failures occurred.
Plan
Choose pipe type and routing, and explain what walls will be opened.
Replace
Install new supply lines and connect fixtures.
Test and patch
Pressure-test the system, then patch access openings.
Most of the work happens in walls, attics and crawl spaces. Some drywall is cut to run the new lines, and patching and painting are separate from plumbing. We explain what to expect for your home before you decide.
Pipe materials
PEX is flexible, resists scale and pitting and is common in repipes. Copper is long-lasting and familiar, though costlier. Each has fans, and local code and the home's layout shape the choice. We explain the pros and cons without a hard sell.
Water chemistry also plays a part. The City's 2010 report listed total hardness around 12 grains per gallon, and mineral-heavy water can build scale inside pipes over time. Ask the Water Division for its latest report, and see water softener if scale concerns you.
Permits and living through a repipe
Repiping generally needs a plumbing permit and inspection, and the City of Monterey Park's building department can confirm what applies. Plan for water to be off for part of a day or more, and for access to walls and cabinets. We schedule the work to keep disruption short.
What affects the cost of repiping
Cost factors we explain before work starts
Repiping is priced by the number of fixtures and how hard the walls and attic are to reach, with patching and paint as separate trades.
Repiping is typically a maintenance or upgrade cost and is not covered, though sudden leak damage may be. Ask your insurer, and keep records of past leaks.
Tell us how many bathrooms the house has and call (626) 898-6169.
Questions about repiping in Monterey Park
Repeated leaks, rusty water, falling pressure and old galvanized pipe are the main signs. We inspect before recommending anything.
Often a few days for a typical house, depending on size and access. We give a realistic schedule after an inspection.
Some openings are usually needed. We explain where and how they are patched.
Repiping generally does. Confirm details with the City of Monterey Park building department.
Yes, when the rest of the system is in good shape. Partial repipes are common.
Both work. We explain tradeoffs for your home and budget.
Sources and where to confirm
Local facts and rules on this page rest on the City's 2010 water quality report, the Water Division, the building department and the California Plumbing Code. Confirm anything that affects your own property with the source.
- City of Monterey Park Water Division, water quality report (2010 edition cited here). Ask the Water Division for the current report.
- City of Monterey Park Water Division, for questions about your meter, billing and the utility side of the line.
- City of Monterey Park building department, plumbing permit requirements, including water heater replacement.
- California Plumbing Code (the state's adoption of the Uniform Plumbing Code, UPC), enforced locally by each city's building department.