Skip to content Pipe Repair & Repiping in Los Angeles
From a single pinhole leak to a full whole-house repipe, we repair and replace copper, galvanized, PEX, and CPVC piping across Los Angeles and the San Fernando Valley — code-compliant, permitted, and built to last.
Same-Day Pipe Repair • Los Angeles & San Fernando Valley
One pinhole leak today is often a sign of what’s coming next.
Licensed plumber dispatched within 60 minutes · Upfront pricing
Piping problems rarely stay isolated for long. A single pinhole leak in an aging galvanized steel pipe is often a sign that the rest of the domestic water system is close behind — which is why every pipe repair call starts with an honest look at the whole water distribution system, not just the fitting in front of us, to determine whether a spot repair is enough or a full or partial repipe is the smarter long-term move. Michael’s Valley Plumbing handles everything from a single fitting repair to whole-house repiping across Los Angeles and the San Fernando Valley — including Burbank, Glendale, Van Nuys, Woodland Hills, Sylmar, and Chatsworth — using copper pipe, PEX piping, and CPVC pipe to match your home’s needs and budget.
Every water service installation is permitted and inspected where required, follows the California Plumbing Code (based on the Uniform Plumbing Code, UPC), and comes with a written quote before any work begins — no guessing at scope once the walls are already open.
What brings homeowners to call us
Common Pipe Problems
Pinhole Leaks
A small, pressurized leak — usually in aging copper pipe or galvanized steel pipe — caused by internal corrosion pitting the pipe wall from the inside. One pinhole leak is a repair; multiple pinhole leaks across the interior water piping are usually a sign the pipe material has reached the end of its service life.
Galvanized Pipe Corrosion
Galvanized steel pipe corrodes from the inside as its zinc coating wears away, gradually restricting flow (low water pressure) and eventually failing. Corrosion isn’t visible from outside the pipe, which is why declining water pressure over time is often the first real warning sign.
Slab Leaks
A leak in a water service line or branch water line running under the concrete foundation, often requiring pipe rerouting or trenchless repair rather than breaking through the slab, depending on the location and extent of the damage.
Water Hammer & Pressure Issues
Noisy or vibrating pipes and a loud banging sound when a valve shuts (water hammer) usually point to a missing or failed water hammer arrestor, while consistently high water pressure — common with Los Angeles’ municipal water supply — can stress fittings and joints throughout the home without a properly functioning pressure reducing valve (PRV) / pressure regulator.
Frozen or Burst Pipes
Less common in Los Angeles than colder climates, but exposed pipes in crawl spaces, garages, or exterior water lines can still be at risk during rare hard-freeze nights without proper pipe insulation and freeze protection.
Corroded or Failing Fittings
Dielectric unions, compression fittings, threaded fittings, and shutoff valves (angle stop, ball valve, gate valve) wear out independently of the pipe itself, and are a common source of a leak that looks like a pipe problem but is really a fitting problem.
Air in Lines, Scale & Mineral Buildup
Air in water lines, mineral deposits, calcium buildup, and pipe scaling are common symptoms of hard water working through the domestic water system over years, gradually affecting flow and fixture performance even without an active leak.
Making the right call
When a Spot Repair Is Enough — and When a Repipe Makes Sense
A Spot Repair Usually Works When…
- The leak is isolated to one section or fitting
- The rest of the system is copper or PEX in reasonably good condition
- This is the first leak you’ve had in this line
A Full or Partial Repipe Is the Better Call When…
- You’ve had more than one pinhole leak in the past year or two
- The home still has original galvanized pipe
- Water pressure has been declining gradually across multiple fixtures
- A remodel already has walls open, making repiping far less disruptive to do now
Whole-house & partial repiping
Repiping Options
Copper Repipe
Rigid copper piping (Type L copper is the standard for residential water service lines) remains a long-lasting, well-understood option — durable, resistant to UV and physical damage, joined with soldered or brazed joints or modern ProPress fittings (press-connection systems like Viega ProPress) — though generally the more expensive material and more labor-intensive to install than PEX.
PEX Repipe
Flexible PEX piping (PEX-A being the most flexible and common for whole-house repiping) installs faster than copper — fewer fittings, easier pipe routing through existing walls — resists pinhole leaks from internal corrosion since it doesn’t corrode the way metal pipe does, and is often the more cost-effective repipe option for a full-house job. Connections use push-to-connect fittings (SharkBite-style) or crimp/expansion fittings depending on the application. Modern PEX repipes often use a central manifold (home-run plumbing system), running an individual line to each fixture from one central point — allowing individual fixture shutoffs and more balanced water pressure throughout the house.
Hot Water Recirculation
For larger homes where hot water takes too long to reach distant fixtures, a hot water recirculation line and recirculation pump can be added during a repipe, keeping hot water available near-instantly at every fixture rather than running the tap until it heats up.
CPVC
A rigid plastic piping option sometimes used for specific runs or where local code and application call for it, resistant to corrosion but more brittle than PEX in some conditions.
What a Repipe Involves
Repiping typically means opening limited access points in walls or ceilings to run new supply lines (hot water line and cold water line separately, sized correctly for flow demand), capping and abandoning the old galvanized or failing copper lines, and restoring water service with minimal downtime — usually completed with water restored the same day, with drywall patching scheduled separately or coordinated with your contractor.
Get a written quote before any work begins
Repair vs. repipe — we give you the honest comparison.
Underground & slab lines
Trenchless Pipe Repair for Underground & Slab Lines
For a leak in an underground or slab-run line, trenchless pipe repair — including epoxy pipe lining or pipe rerouting / pipe relocation — can resolve the issue without full excavation or breaking through concrete, provided the pipe’s condition and path are suitable. We confirm the diagnosis first with leak detection and pressure testing — hydrostatic pressure testing, static and dynamic pressure tests, or isolation testing depending on the situation — before recommending trenchless vs. traditional repair.
Diagnosing water pressure issues
Water Pressure Problems
Water pressure complaints are diagnosed with a pressure gauge, checking both static pressure (no fixtures running) and dynamic pressure (under flow), since a normal static reading with a big drop under flow points to a different cause than uniformly low pressure. Common fixes range from a simple PRV adjustment to pressure balancing across fixtures, or, for older homes, addressing internal corrosion in galvanized pipe that’s narrowing the line itself.
We also check supply stub-outs and stub-ups — the short pipe sections that connect the wall or floor plumbing to a fixture — since a restricted or damaged stub-out can look like a whole-house pressure problem when it’s actually isolated to one fixture.
Transparent pricing
Pipe Repair & Repiping Cost
Cost depends on the scope (single spot repair vs. partial or full repipe), the pipe material chosen (copper, PEX, or CPVC), and access — a repipe in a home with easy attic or crawl space access costs less than one requiring extensive wall-opening and drywall work.
Pipe installation done right
Built to Code
Every new water line installation includes correct pipe sizing for flow demand, proper pipe hangers and pipe supports at code-required spacing, seismic bracing where applicable, dielectric unions between dissimilar metals to prevent galvanic corrosion, and a pressure reducing valve (PRV) check where municipal water pressure requires one. We also verify the main shut-off valve, backflow preventer, and vacuum breaker where required.
Permits and inspections are pulled where required under the California Plumbing Code (based on the Uniform Plumbing Code, UPC) — skipping this step is one of the most common issues we find when called in to fix someone else’s prior installation.
Pipe Repair Before & After
Real pipe repair and repiping jobs completed across Los Angeles and the San Fernando Valley.
Built for local conditions
Why LA Pipes Are Different
Homes built between the 1940s and 1970s throughout Los Angeles — from the San Fernando Valley to older neighborhoods like Los Feliz, Silver Lake, Highland Park, and Eagle Rock — commonly still have original galvanized supply piping approaching or past its typical 40–60 year service life. Los Angeles’ municipal water pressure runs higher than many homes’ plumbing was designed for, which accelerates wear at joints and fittings without a functioning PRV. Hard water across much of the area also accelerates internal corrosion and scale buildup inside older pipe, which is a factor we account for when recommending a repair versus a repipe.
Hillside homes and areas prone to soil movement or minor seismic activity can also stress rigid pipe runs and fittings over time. Any repair or repipe follows current California plumbing code.
Why Homeowners Choose Us
Licensed & Insured
Full CA contractor’s license, bonded and insured for your protection.
60-Min Response
Fast dispatch across Greater Los Angeles, every day of the week.
Upfront Pricing
Written quote before any work starts, no surprise charges.
Real Person Answers
No call centers, no voicemail maze — a real person picks up.
Dealing With a Pipe Leak Right Now?
Same-day pipe repair across Los Angeles & the San Fernando Valley.
Frequently Asked Questions
A single, isolated leak in an otherwise sound system is usually a spot repair. If you’ve had more than one pinhole leak in the past year or two, still have original galvanized pipe, or have noticed water pressure declining gradually across multiple fixtures, a full or partial repipe is typically the more cost-effective long-term fix rather than repeated repairs on aging pipe.
Cost depends on the pipe material chosen (copper vs. PEX), the size of the home, and access — a repipe with easy attic or crawl space access costs less than one requiring extensive wall-opening and drywall work. We provide a written, itemized quote on-site before any work begins.
Both are good options. Copper is a long-lasting, well-understood standard that resists physical damage well. PEX installs faster, resists pinhole leaks from internal corrosion, and is often more cost-effective for a full-house repipe. We walk through the trade-offs for your specific home before recommending one.
Pinhole leaks are usually caused by internal corrosion pitting the pipe wall from the inside, often accelerated by water chemistry, high water velocity at certain fittings, or the age of the pipe itself. One pinhole leak is a repair; multiple leaks across the system usually signal the material has reached the end of its service life.
In most cases, yes — whole-house and partial repiping typically requires a permit and inspection under the California Plumbing Code. We pull permits and schedule inspections as part of the job, so you’re covered if you ever sell your home.
Most whole-house repipes are completed in 1–3 days depending on the size of the home and access, with water service restored the same day work begins in most cases. Drywall patching is typically scheduled separately.
Only briefly, during the active connection work. We coordinate the job to minimize downtime and restore water service the same day in the vast majority of cases.
Often, yes. Depending on the leak’s location and the pipe’s condition, a re-route or trenchless repair can resolve a slab leak without breaking through the foundation. We confirm this with leak detection before recommending an approach.
Gradually declining pressure across multiple fixtures is often a sign of internal corrosion narrowing galvanized pipe from the inside. A sudden drop is more likely a leak or a failing pressure-reducing valve (PRV). We diagnose the specific cause before recommending a fix.
Service area
Pipe Repair & Repiping Throughout Los Angeles
Also serving: Montrose, La Crescenta, North Hollywood, Studio City, Encino, Sherman Oaks, Northridge, Calabasas, Tarzana, West Hills, Winnetka, Canoga Park, Reseda, Porter Ranch, Granada Hills, San Fernando, and North Hills
Full-service plumbing
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From emergency callouts to full sewer line repairs — one licensed team, every plumbing need.
Need a Pipe Repaired or Repiped Today in Los Angeles?
Same-day pipe repair and repiping across Los Angeles and the San Fernando Valley. Licensed, insured, and fairly priced — every time.
Call (877) 976-4242