Note to readers: This post was updated on July 10, 2026 to reflect current copper vs. PEX guidance and add links to our detailed re-piping comparison guides. We refreshed the details below so the advice reflects how we approach this work today.
If your home still has its original galvanized steel pipes, there’s a good chance you’re dealing with low water pressure, discolored water, or leaks that keep showing up in different spots. Re-piping fixes all three — and copper is one of the most trusted materials for doing it right.
Why Galvanized Pipes Cause Problems
Galvanized steel pipe was standard in homes built decades ago, but it corrodes from the inside out. Over the years, mineral buildup narrows the pipe, water pressure drops, and rust can start affecting water quality. Once a galvanized system starts failing, it usually doesn’t stop at one leak — more follow because the whole system is aging at the same rate.
Why Copper Is a Strong Choice
Copper pipe has been used in residential plumbing for generations because it holds up well over time:
- Resistant to the kind of internal buildup that chokes off water flow
- Doesn’t affect water taste or quality the way corroding galvanized pipe can
- Handles both hot and cold lines reliably
- Long service life when installed correctly
Copper vs. PEX
Copper isn’t the only option. PEX piping has become popular because it’s flexible, faster to install, and typically less expensive. Copper tends to be the choice for homeowners who want a rigid, time-tested material with a long track record; PEX appeals to those focused on cost and installation speed. Our breakdown of copper vs. PEX for San Gabriel Valley homes walks through the tradeoffs in more detail, and our cost comparison is worth a look if budget is the deciding factor.
Signs Your Home May Need a Re-Pipe
- Noticeably low water pressure throughout the house, not just one fixture
- Discolored or rusty-looking water, especially after the water’s been off for a while
- Repeated pinhole leaks in different locations — see our guide on copper pinhole leaks if you’re already seeing these
- Visible corrosion on exposed pipes under sinks or in the garage
- A home over 40-50 years old that’s never been re-piped
If your pipes are copper already but starting to show age, our guide on warning signs your old copper pipes need attention covers what to watch for.
What the Process Looks Like
A whole-house re-pipe is a bigger job than most plumbing repairs, but a good crew works room by room to minimize disruption, patches walls as they go, and pressure-tests the new lines before closing everything up. Most re-pipes are completed in a matter of days, not weeks.
Western Rooter installs both copper and PEX piping, and we’ll walk you through which makes more sense for your home before any work starts. Call 626.448.6455 for an assessment.
