Meyer's Plumbing — Service Guide
Water & Sewer Repiping
A complete guide to understanding when and why repiping is necessary, what the process involves, and what to expect from a professional repipe in the DFW area.
What Is Repiping?
Repiping is the process of replacing some or all of the water supply lines or drain and sewer lines inside a home or building. Unlike a spot repair — which patches a single leak or replaces one section of pipe — a repipe addresses the entire system, or a major portion of it, when the underlying piping has reached the end of its useful life.
Most homes built before the 1990s were plumbed with galvanized steel or older copper. Galvanized pipe corrodes from the inside out over decades, gradually restricting flow and eventually failing. Even copper, while more durable, can develop pinhole leaks as it ages, especially in areas with aggressive water chemistry. When failures become frequent or widespread, repiping is often the most practical and cost-effective long-term solution.
Signs Your Home May Need Repiping
No single symptom guarantees a repipe is needed, but several patterns together are a strong signal that the piping system is failing rather than experiencing isolated problems.
Discolored or Rusty Water
Brown, orange, or reddish water — especially first thing in the morning — is a classic sign of corroding galvanized steel pipe. The rust you see in the water is coming from inside the pipe walls.
Frequent or Recurring Leaks
One leak is a repair. Two or three leaks in different locations within a short period is a pattern. When pipes are failing systemically, patching individual spots is a temporary fix on a deteriorating system.
Low or Declining Water Pressure
Galvanized pipe corrodes and builds up mineral deposits on the interior walls, progressively narrowing the pipe's effective diameter. If pressure has dropped noticeably over the years, internal corrosion is a likely cause.
Visible Corrosion on Exposed Pipes
Check under sinks, in utility rooms, and anywhere pipes are visible. Flaking, pitting, discoloration, or white mineral buildup on the outside of pipes are signs of advanced age and corrosion.
Older Galvanized Steel Piping
Galvanized pipe has a typical service life of 40–70 years. If your home was built before 1970 and has never been repiped, the piping system is likely at or past the end of its expected lifespan.
Unexplained Increases in Water Bills
A slow, hidden leak inside a wall or under a slab can run continuously without producing obvious wet spots. If your water bill has crept up without a clear reason, aging pipes may be the cause.
Pipe Materials Used in Repiping
The right material depends on the application, the home's existing system, local water chemistry, and budget. Here is an overview of the most common options used in residential repiping today.
PEX (Cross-Linked Polyethylene)
Overview & Advantages
PEX is the most widely used material for water supply repiping today. It is flexible, which means it can be run through walls and around obstacles with fewer fittings. It resists scale and chlorine, handles freeze-thaw cycles better than rigid pipe, and is generally less expensive to install than copper. PEX comes in red (hot), blue (cold), and white (either), making it easy to identify lines at a glance.
Limitations
PEX cannot be used outdoors or in direct sunlight, as UV exposure degrades the material. It is not suitable for gas lines.
Copper
Overview & Advantages
Copper has been the standard for residential plumbing for decades and remains an excellent choice. It is durable, has a long service life, is resistant to bacteria, and is fully recyclable. Many homeowners and buyers are familiar with copper and consider it a premium material.
Limitations
Copper costs more than PEX for both material and labor. In areas with acidic water, copper can develop pinhole leaks over time. It also requires soldering, which adds installation time.
CPVC (Chlorinated Polyvinyl Chloride)
Overview & Advantages
CPVC is a rigid plastic pipe rated for hot and cold water. It is less expensive than copper and easier to work with than soldered pipe. It has been used in residential plumbing since the 1960s.
Limitations
CPVC can become brittle with age and is more prone to cracking than PEX, particularly in cold climates. It requires solvent cement joints, which must be properly cured before the system is pressurized.
How a Repipe Works: The Process Step by Step
Understanding what happens during a repipe helps homeowners know what to expect and plan accordingly. While every job is different, most residential repipes follow a similar sequence.
Assessment and Planning
Before any work begins, the plumber evaluates the existing system — pipe material, age, condition, layout, and the scope of what needs to be replaced. This assessment determines whether a full repipe or a targeted partial repipe is the right approach, and which material is best suited for the job.
Water Shutoff and System Drain
The main water supply to the home is shut off and the existing lines are drained. This is necessary before any pipe work can begin.
New Pipe Installation
New piping is run through the walls, attic, crawlspace, or other accessible routes. Small access points are made as needed to route the new lines properly.
Connection to Fixtures and Appliances
The new supply lines are connected to all fixtures — sinks, toilets, showers, tubs, water heater, washing machine, refrigerator, and any other water-using appliances.
Pressure Testing
The new system is pressure-tested to confirm there are no leaks at any connection point. This step is critical — it is far easier to address a fitting issue before closing up access points than after.
Common Questions About Repiping
Think Your Home Might Need Repiping?
If you're seeing the warning signs or just want a professional opinion on the condition of your pipes, call Meyer's Plumbing. We'll assess your system honestly and give you a clear picture of what's going on — no pressure, no upselling.