Published: February 22, 2026 | Reading time: 9 minutes
Repiping is a big job, and no one should be sold one because of a single leak. But there is a point where patching one failure after another costs more in money and stress than replacing the pipe, and plenty of Gwinnett homes built from the late 1970s into the 1990s are at or near it. Here is how to tell which side of that line your house is on.
The Clearest Signs
One of these alone may mean little. Several together usually means the pipe itself is at the end of its life, not that you were unlucky.
- Repeat leaks. Two or more unexplained leaks in a few years, especially in different parts of the house, is the strongest single sign.
- Rusty or brown water, especially first thing in the morning after the water has sat in the pipes overnight.
- Falling pressure throughout the house rather than at one fixture.
- Visible corrosion on exposed pipe: flaking, green or white crust, dimples or pinhole weeping, found in a basement, crawl space or at the water heater.
- A metallic taste or smell in water that is otherwise clear.
- Noisy pipes that bang, rattle or whistle, and are getting worse.
- Grey or blue plastic pipe, which may be polybutylene. See below.
If your problem is hidden, leak detection can show where the water is going before you make a big decision.
The Materials That Cause Trouble in Gwinnett Homes
What matters is the decade the house was built, since that tells you what is probably in the walls.
Galvanized steel (older homes, generally before the 1970s)
Zinc-coated steel rusts from the inside out. It narrows over the years, so pressure fades slowly and the water runs brown after sitting. By the time pressure is clearly poor, the inside of the pipe can be a fraction of its original opening, and no new faucet will fix that. It may still turn up in older houses in long-established parts of the county, such as around downtown Lawrenceville.
Polybutylene (roughly the late 1970s to the mid 1990s)
Flexible grey plastic (sometimes blue or black) joined with crimp rings or metal bands. It was widely used during the years when many of Gwinnett's subdivisions went up. It tends to fail at the fittings and sometimes without any obvious cause. There is no dependable test that tells you which joint is next. If you find it, and especially if it has already leaked once, ask a plumber about replacing it.
Copper
Good copper lasts for decades. But copper can develop pinholes from the inside, and once the first appears, others often follow. The age of the home and the plumber's look at the other exposed pipes tell you whether you are dealing with one defect or a whole system.
PEX and CPVC (newer homes)
These rarely need whole-house replacement. They fail at fittings, at points of damage and where they were exposed to the cold or the sun.
Where to Look in Your House
Check the water heater connections, the pipe where the line comes in (garage wall, crawl space, utility closet), under sinks, and anywhere you can see pipe. Take photos. A plumber looking at the pictures can tell you a lot. Remember that the meter box near the street belongs to the county's water utility, so look at the line on your side of the house.
Repair or Repipe?
A good plumber will tell you a repair is enough when:
- It is a single leak in otherwise sound copper
- The damage has a clear one-time cause, such as a nail through a pipe during a remodel
- The leak is confined to one branch that can be replaced by itself
- The home has already been repiped and a single fitting failed
A repipe deserves serious thought when:
- There have been two or more leaks in a few years
- The pipe is polybutylene or badly corroded galvanized
- Pressure is poor everywhere and the pipe is clearly narrowing
- Several pinholes have turned up in copper
Ask for the repair and the repipe options side by side, and ask the plumber to show you why one fits.
PEX or Copper
PEX is common for whole-house repiping now. It has fewer joints inside walls, and it can flex slightly in a freeze rather than splitting. Copper is long-lasting and is still used for some exposed runs, where local code or preference calls for it. Hard freezes are not common here, but the one around Christmas 2022 burst pipes across metro Atlanta, which is a reason to ask about insulating any pipe in a garage, attic or exterior wall during a repipe. Ask the plumber which material they recommend for each part of the house and why.
What Drives the Cost
We do not set prices, and we do not list them here. What decides the price of a repipe:
- The size of the house and the number of bathrooms and fixtures
- Slab, crawl space or basement construction
- How much wall and ceiling has to be opened, and who patches it
- The material: PEX, copper or a mix
- A permit and inspection
- Whether it is a whole house or partial repipe of a problem section
When you compare quotes, compare scope. Ask whether drywall repair and paint are included, whether the permit is included, how the old pipe is handled, and how the water is shut off during the work.
Permits, Inspection and Resale
Whole-house repiping normally needs a permit, and the signed inspection matters when you sell. Buyers and their inspectors look for polybutylene, and a documented replacement settles the question. Ask the plumber who pulls the permit and who sets up the inspection, and keep the paperwork. Check with the permit office for your address, since Gwinnett County and the cities each handle their own.
Living in the House During a Repipe
Ask how many days it is likely to take, how often the water will be off, and what you need to move out of the way. Cover or move belongings near the walls being opened. If you have pets or small children, ask how the work area will be kept safe.
Calling
Call (770) 285-5619. The line is answered 24/7, and we connect you with an independent local plumber who handles pipe repiping, burst pipe repair and water line repair. The plumber does the work and gives you the price. Homes built in that polybutylene window can be found in any Gwinnett city, including Snellville, Lilburn and Duluth, so check the pipe rather than the zip code.
Frequently Asked Questions
What are the signs a house needs repiping?
Repeat leaks, rusty water in the morning, falling pressure across the whole house, visible corrosion on exposed pipe, a metallic taste, noisy pipes and grey plastic pipe. One sign alone may mean little. Several together usually mean the system is near the end of its life.
What is polybutylene pipe and why is it a problem?
Flexible grey plastic supply pipe used from roughly the late 1970s to the mid 1990s, joined with crimp rings or metal bands. It tends to fail at the fittings and there is no dependable test to predict which one is next.
Is PEX or copper better for repiping in Georgia?
PEX is common for whole-house repiping because it has fewer joints inside walls and can flex slightly in a freeze. Copper still suits some exposed runs. Ask the plumber which material they recommend for each part of your house and why.
What affects the cost of repiping a house?
House size, bathrooms and fixtures, slab or crawl space construction, how much wall has to be opened and who patches it, the material, the permit, and whether it is a whole or partial repipe. Compare scope as well as price, and ask for the price before work starts.
Do I need a permit to repipe a house in Gwinnett County?
Whole-house repiping normally needs one, and the signed inspection matters at resale. Ask the plumber who will pull the permit and set up the inspection, and check with the permit office for your address.
When is a repair enough instead of a repipe?
When it is a single leak in otherwise sound pipe, damage with a clear one-time cause, or a problem limited to one branch. Ask for both options side by side.