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Galvanized Pipe Replacement: Costs, Signs and Process

Galvanized Pipe Replacement: Costs, Signs and Process

Plumber removing corroded galvanized pipe

If your home has galvanized steel water pipes, replacement means a repipe: new PEX or copper supply lines run through the house, tested, inspected and put into service. For most houses it is a $4,000 to $15,000 job, depending on size, fixture count and material. Spot repairs cost far less, but they rarely fix the real problem, which is corrosion throughout the whole system.

This guide covers how to tell if your pipes are finished, what a repipe involves, what drives the price, and what to do about your drinking water while you plan. It is written for homeowners in Coquitlam, Port Coquitlam and Port Moody, where plenty of older houses still have original steel plumbing.

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TL;DR

  • Galvanized pipes rust from the inside. Brown water, weak pressure and pinhole leaks are the usual signs they are near the end.
  • A whole-house repipe typically runs $4,000 to $15,000 in 2026. PEX sits at the lower end, copper at the higher end. A partial repair is $400 to $1,500 but is usually a stopgap.
  • Health Canada lists replacing galvanized pipes as the most permanent way to cut cadmium and lead exposure from this source.
  • Significant repiping in Coquitlam needs a plumbing permit and an inspection before walls are closed.
  • Until the repipe, flush the cold tap before use and do not drink or cook with hot tap water.

Table of Contents

What galvanized pipe is and why it fails

Galvanized pipe is steel coated in zinc. The zinc slows rust, but it wears away. Once it is gone, the steel corrodes from the inside out. Rust and mineral scale build up on the pipe walls, narrowing the bore a little more every year. Eventually the pipe is both weak and choked.

That is why two problems show up together: leaks, where the wall has thinned, and low pressure, where the opening has closed up. Industry professionals point out that low pressure is often a symptom of advanced internal corrosion, not something a quick adjustment will fix.

How do you know if you have it? Look at exposed pipe in the basement, utility room or near the water heater. Galvanized pipe is dull grey, threaded at the joints, and a magnet will stick to it. Copper is orange-brown, and PEX is flexible plastic, usually red, blue or white. If you are not sure what you are looking at, we can check it for you on site.

Signs your galvanized pipes are due

None of these alone proves you need a full repipe, but together they point one way:

  • Brown or rusty water, especially first thing in the morning or after the taps have been off for a while.
  • Weak pressure, particularly in showers and upstairs fixtures, or pressure that drops when two taps run.
  • Pinhole leaks or damp stains on drywall, ceilings or under floors.
  • Repeated repairs. One fix holds, then a leak appears a metre away.
  • Visible rust, flaking or white mineral crust at joints and fittings.
  • Metallic taste or smell, usually worse from the hot tap.

These are the same common signs plumbers describe elsewhere: brown water after an overnight pause, weak shower pressure, and recurring pinholes.

A slow leak inside a wall or under a slab can do real damage before you see it. Our guide to slab leak signs lists checks you can run first.

Why it matters for your water

This is not only about plumbing performance. Health Canada notes that exposure to cadmium in drinking water mostly comes from leaching out of galvanized steel used in home plumbing, and that the only way to know what is in your water is to test it. Corroding galvanized pipe can release metals such as cadmium and lead even when the municipal supply is clean.

Health Canada’s guidance treats replacing the galvanized pipe as the most permanent fix. Certified filters are a temporary measure, not a substitute for new pipe.

What to do while you wait

If the repipe is weeks or months away, these steps from HealthLink BC are worth following:

  1. Flush the cold tap for 1 to 5 minutes after any period of non-use, especially in the morning.
  2. Do not use hot tap water for drinking or cooking. Hot water pulls more metal out of the pipe.
  3. Consider testing your tap water. If you have young children, are pregnant or are nursing, talk to your doctor or public health nurse about your household’s exposure.

If a certified filter is part of your stopgap, look for one rated to the relevant NSF/ANSI standard for the contaminant you are targeting. Treat it as a bridge to the repipe.

Repair or replace?

A short, exposed section that has failed can be cut out and replaced. That is a legitimate fix when the rest of the system is in decent shape, and it typically costs $400 to $1,500.

There are three reasons it often does not last:

  • Corrosion is system-wide. Fixing one section leaves the rest of the aged pipe in place, so another leak is a matter of time.
  • Pressure does not come back. Restriction is usually spread through the whole network, so one new section will not restore flow.
  • Mixed metals can make it worse. Connecting new copper to old galvanized without proper dielectric unions can speed up corrosion at the joint through galvanic action.

A simple rule: if you have had one leak and the pipes are otherwise clean inside and the pressure is fine, repair. If you have had two or more leaks, or pressure and water colour are also off, plan the repipe. Paying for repeated spot repairs adds up to a real fraction of the full job.

How much galvanized pipe replacement costs in 2026

The most useful published range puts a whole-house job at $4,000 to $15,000. Those figures are general, not specific to Metro Vancouver, so treat them as a guide to the shape of the cost, not a quote.

Option Typical range Notes
Partial repair of an exposed section $400 to $1,500 Does not fix systemic corrosion or pressure
Full-house repipe in PEX $4,000 to $12,000 Lower material and labour cost
Full-house repipe in copper $8,000 to $15,000 Higher material cost, more soldering labour

New piping itself is about $1.50 to $8.00 per linear foot depending on material and installation complexity. Most of the bill is labour and access.

What moves the price

  • Home size and layout. More square footage and more floors mean more pipe and more routing.
  • Number of fixtures. Every bathroom, kitchen, laundry and hose bib is another run and another connection.
  • Material. PEX is generally the more affordable option. Copper costs more for both the pipe and the labour of soldering.
  • Access. Open basements, crawl spaces and attics make routing easier. Finished walls and ceilings add drywall repair.
  • Permit and inspection. These are part of doing the job properly, not an optional extra.
  • Related work. If the water heater is old, the repipe is a sensible time to replace it.

We do not publish flat prices for repipes because no two houses are alike. We quote on site, after we have seen the pipes. Our call-out fee is $60, and it is waived if you go ahead with the work.

PEX or copper?

Both are accepted for residential supply lines, and both beat galvanized steel by a wide margin. The choice comes down to budget, house layout and preference.

PEX is flexible plastic tubing. It bends around obstacles, needs fewer joints, and is usually faster and cheaper to install. That flexibility is also what lets installers route it through attics, crawl spaces and utility paths with less opening of walls.

Copper is rigid, long established and widely trusted. It costs more, and the soldering takes longer. Some homeowners prefer it for exposed runs or for the feel of a traditional system.

In a lot of older Tri-Cities houses, the practical answer is a mix based on what is exposed and what is not. Ask for the material to be matched to each part of the house, and ask what the warranty covers.

PEX and copper pipe comparison

What a repipe involves

The sequence is similar from house to house:

  1. Walkthrough and quote. We trace the existing lines, check the water heater and main shutoff, and agree the material and routing.
  2. Permit. Where required, the permit is applied for before work starts.
  3. Shutoff and drain. The water is turned off and the old system drained. You will be without water for part of the job, so plan for it.
  4. Routing and installation. New lines go in, using the most accessible paths. Small access openings are made where needed.
  5. Pressure test. Every joint is tested before anything is closed up.
  6. Inspection. The work is inspected before it is concealed.
  7. Reconnect and restore. Fixtures are reconnected, the water is turned back on, and access holes are made ready for drywall repair.

We do not tear out every wall. A full repipe does not always require complete removal of old pipes from inside the wall cavities. Many installers disconnect, drain and abandon the old lines in place and route the new lines through accessible areas. That keeps costs and disruption down. Ask any contractor how they plan to route your house, because it tells you how much drywall work to expect.

How long does it take? It depends on the house. Smaller homes with good access go faster, and larger ones with finished walls take longer. We will give you a realistic timeline when we quote.

Permits, code and who can do the work

Plumbing in BC must follow the BC Building Code plumbing requirements, which adopt the National Plumbing Code of Canada by reference with BC amendments. The 2024 BC Plumbing Code applies to projects with a building permit application on or after March 8, 2024.

In general, plumbing work must be done by certified tradespeople. There is an exception for a registered homeowner doing work on a single detached home they live in, provided the work meets code. A whole-house repipe is a big job to take on, and a mistake behind a wall can flood a house. Most homeowners are better off hiring it out.

The City of Coquitlam runs a plumbing permit process that includes online application and payment, and its page also explains when a permit is not required. Check with your city, whether it is Coquitlam, Port Coquitlam or Port Moody, before work starts, and make sure whoever you hire handles it. New systems must be inspected before they are covered or concealed.

Perspective: what we tell homeowners

We get called to galvanized houses regularly. The pattern is almost always the same. A homeowner has patched a leak or two, the pressure has been slowly getting worse for years, and then the morning shower is a trickle.

Our honest view is that patching a failing galvanized system is a way to buy time, not a way to solve the problem. If your pipes are clearly corroded inside, putting money into repeated spot repairs rarely pays off. If they are not, and you only have one isolated problem, we will tell you that too, and fix just that.

We would rather you decide with the facts in front of you. That is why we quote on site, explain what we see, and put the price in writing before any work begins. You deal with the owner, not a call centre or a rotating crew.

If you also have an ageing hot water tank, tell us. Replacing both in one visit is often simpler than doing them separately, and we haul away the old tank at no extra cost.

— Jon

Getting a repipe quote from us

We are an owner-led plumbing and gas fitting company in Port Coquitlam, serving Coquitlam, Port Coquitlam, Port Moody and the wider Metro Vancouver area. Jon is on the job himself, and our rating is 5.0 across 111 Google reviews.

For a galvanized pipe assessment, start with our plumbing services page and book an on-site look. If you have an active leak or no water, call our 24/7 emergency plumbing line. If your water heater is near the end too, see our water heater installation service.

Questions to ask any contractor

  • Who will actually be on site doing the work?
  • Which material do you recommend, and why, for my house?
  • How will you route the new lines, and how much wall or ceiling will be opened?
  • Who pulls the permit and books the inspection?
  • What is included in the quote, and what could change it?
  • What is the warranty on parts and labour?

FAQ

Can you repair galvanized pipe instead of replacing it?

Yes, for an isolated, accessible section. Expect roughly $400 to $1,500. The catch is that the rest of the pipe is just as old, so another leak is likely and pressure problems will not improve. If you have had more than one leak, a repipe usually makes more sense.

How long do galvanized pipes last?

It varies with water chemistry and installation. Zinc coatings on older pipe have a finite life, and one source puts it at roughly 40 to 70 years under normal conditions. Homes with steel pipes from decades ago are well into that window.

Is it safe to drink water from galvanized pipes?

Corroding galvanized pipe can release metals such as cadmium and lead into the water. Health Canada recommends testing your tap water. HealthLink BC advises flushing cold water and avoiding hot tap water for drinking or cooking. If you have children or are pregnant, talk to your doctor about testing.

Do I need a permit to replace galvanized pipes in Coquitlam?

Significant repiping generally needs a plumbing permit and an inspection before the work is concealed. The City of Coquitlam’s plumbing permit page sets out the process and exemptions. Your plumber should handle the application.

Is PEX better than copper for a repipe?

Neither is better in every case. PEX is typically cheaper and faster to install, and it is easier to route through tight spaces. Copper costs more and takes longer but is a long-established choice. A good plumber will match the material to your house and budget.

Sources