Most homeowners don't think about their pipes until something goes wrong. But pipes have a lifespan — and when they start to fail, the problems compound quickly. Knowing the warning signs can save you from major water damage and help you budget for one of the larger plumbing investments a homeowner faces.
Common Warning Signs
1. Discolored Water
If your water runs brown, orange, or red — especially after the water hasn't been used for several hours — that's rust from the inside of galvanized steel pipes. Galvanized pipes were standard in homes built before 1960 and have a lifespan of 40–70 years. Rust is not just an aesthetic problem; it means the pipe walls are deteriorating from the inside out.
2. Low Water Pressure Throughout the House
A single low-pressure fixture might have a clogged aerator. But if pressure is low at every tap, shower, and toilet simultaneously, it usually indicates significant buildup (scale) inside the pipes restricting flow — or corrosion that has reduced the pipe's interior diameter.
3. Frequent Leaks in Multiple Locations
One pipe leak is a repair. Three in different parts of the house over a couple of years is a pattern — and a sign that the system as a whole is failing. At some point, patching individual leaks becomes more expensive than repiping.
4. Visible Corrosion or Mineral Buildup
Inspect any exposed pipes under sinks, in the basement, or in the crawlspace. Bluish-green stains on copper pipes indicate corrosion. Flaking, dimpling, or discoloration on galvanized steel means rust is actively progressing.
5. Bad-Tasting or Foul-Smelling Water
Metallic taste or smell can come from copper or galvanized pipes degrading into your water supply. This is both a quality and health concern.
What Are Pipes Replaced With?
The three most common materials used for repiping:
- Copper — The gold standard. Durable (50–70 year lifespan), resistant to bacteria, handles high pressure and temperature. More expensive to install.
- PEX (cross-linked polyethylene) — Flexible, faster to install, freeze-resistant, and significantly cheaper than copper. Most plumbers' first choice for whole-house repiping today.
- CPVC — Rigid plastic, cheaper than copper but less flexible than PEX. Good for hot and cold supply lines.
What Does Repiping Cost?
Cost depends on home size, pipe material, and local labor rates:
- Small home (under 1,500 sq ft): $3,000–$6,000
- Medium home (1,500–2,500 sq ft): $6,000–$12,000
- Large home (2,500+ sq ft): $10,000–$20,000+
PEX repiping is typically 25–40% less expensive than copper for the same home size. Most jobs take 2–5 days and require drywall patching after the pipes are run.
Can You Stay Home During Repiping?
Yes, but water will be off for most of each workday. Many homeowners plan ahead with a hotel stay or visit family for the main days. The plumber will typically restore water each evening so you can shower and use facilities overnight.