Most people arrive at this page after a burst. They’ve had a leak fixed, and the plumber said the rest of the pipe isn’t in great shape. The question is whether to keep repairing or replace. It’s a bigger decision than the emergency, so it deserves more thought than the middle of the night allows. If you’re still dealing with the immediate leak, start at emergency burst pipe repair.
Repair or replace?
| What you’re seeing | What it usually suggests |
|---|---|
| One leak, rest of pipe in good shape | Repair the damaged section |
| Repeated pinhole leaks in copper | Corrosion is spreading. Replacing the affected runs is often better than patching |
| Rusty or brown water, falling pressure, galvanized steel pipe | Pipe is clogging from the inside. Replacement is usually the lasting fix |
| Polybutylene (often gray or blue flexible pipe) from the late 1970s to mid-1990s | A material with a history of failures. Many plumbers recommend replacing it before it leaks |
| Leak damage to the same wall or ceiling more than once | Ask whether replacing that run avoids opening it again |
Even then it’s a judgment call, so it’s a good idea to get the plumber to show you the pipe they’re talking about. Photos are fair to ask for.
Materials plumbers commonly use
- Copper. Durable and long-lived, and also the more expensive option. Hard water and acidic conditions can cause pinholes over time.
- PEX. Flexible plastic tubing that needs fewer joints and can be routed through walls with less demolition. Widely used in repipes and approved by plumbing codes.
- CPVC. Rigid plastic used for hot and cold supply lines. Cheaper than copper, though it can be brittle with age.
Which one is right depends on the house, local code and budget. Ask the plumber why they recommend one over another instead of accepting the default.
Partial or whole-house?
A partial repipe replaces the worst sections: say, the run to one bathroom or the lines in one wall. A whole-house repipe replaces the supply piping throughout. Whole-house jobs are significant: walls are opened in several places and the water is off for part of a day or longer. Partial work costs less up front, but you may be back in six months if another section fails. A plumber who inspects the system can estimate how much life the rest has left.
Permits and who can do the work
In the WSSC Water service area, which includes Montgomery County, interior re-pipes and water service line replacements are among the jobs that WSSC’s plumbing code requires a WSSC-licensed plumber to perform, and they need permits and inspection. In Maryland, plumbing work in general must be done by licensed plumbers. Before hiring anyone, ask for their license details and confirm the permit will be pulled. You can check Maryland plumber licenses through the state’s Department of Labor.
Costs depend on… the size and layout of the house, the number of fixtures, the pipe material, how much of the wall has to be opened and repaired, and how the work is phased. We don’t publish prices because the plumber sets them. Get at least two written estimates for a whole-house job, and make sure each one says whether drywall and paint are included.
What the process looks like
- Inspection and plan. The plumber looks at the existing pipe, water pressure and access points and explains the proposed route.
- Permit and scheduling. The plumber arranges permits and tells you how long the water will be off.
- New pipe installed. Access holes are made, new lines run and connected, and old lines are removed or abandoned as appropriate.
- Pressure test and inspection. The system is tested and inspected before walls are closed.
- Patching. Drywall and paint may need to be arranged separately.
Older homes
Replacement comes up most in homes of a certain age, and in Potomac that varies a great deal from one neighborhood to the next. Houses in places like Potomac Hills or Bradley Farms may have original supply lines or pipe that someone already partly replaced. The only reliable answer is to have the pipe in your house inspected. When you’re ready to start that conversation, a professional burst pipe repair service in Potomac can put you in touch with an independent plumber who does repiping.
Questions people ask
How do I know if my house needs repiping?
How long does a whole-house repipe take?
Will repiping make a mess?
Does repiping increase my insurance or home value?
Related services
Wall Pipe Leak Repair
Hidden leaks inside walls: damp drywall, stains, sound of running water.
Main Water Line Repair
The line that carries water from the street into your house.
Emergency Burst Pipe Repair
A split pipe or blown joint with water actively escaping.
Ceiling Pipe Leak Repair
Water coming through a ceiling from a pipe above.
A note on this guide. This page is general information, last reviewed October 2026. It can’t replace a plumber looking at your actual pipes, and Burst Pipe Fix Pros does not perform plumbing work.