How long does water supply piping last?
How long water supply piping lasts
| Type | Published service life | Roots plans for |
|---|---|---|
| Copper | 70 years | Year 70 |
| PEX | 40 years | Year 40 |
Service life is a planning horizon, not an expiry date. It tells you when to start budgeting, get a second quote, and stop paying for repairs on something near the end — not the day it stops working.
What changes this
Copper. Effectively the life of the house. Copper fails at pinholes from water chemistry rather than from age, so the horizon matters far less than what your water is doing to it.
PEX. PEX is young enough that the published figure is an engineering estimate rather than an observed service life — very little installed PEX has actually reached 40 years yet.
Sources
- Copper: InterNACHI's Standard Estimated Life Expectancy Chart for Homes. Single source — the NAHB study does not break supply piping out by material.
- PEX: InterNACHI's Standard Estimated Life Expectancy Chart for Homes. Single source — the NAHB study does not break supply piping out by material.
Service-life figures are typical estimates drawn from published industry references. Where a second reference covers the component, the figure is cross-checked against it and any disagreement is set out above; where only one reference covers it, that is stated. Actual life varies with installation, water quality, climate, and maintenance, and these figures shouldn't be relied on for insurance, lending, or warranty decisions.
Maintenance is what decides where in the range you land
The published range is wide for a reason: two identical units, installed the same day, routinely fail years apart. What separates them is upkeep.
For water supply piping, the tasks that matter most:
Roots tracks the age of every component in your home alongside the upkeep that extends it, so the replacement is a planned expense instead of an emergency.
Frequently asked questions
- How long does water supply piping last?
- It depends on the material: Roots plans a replacement between year 40 and year 70, depending on which of 2 types you have.
- When should you replace water supply piping?
- Roots plans between year 40 and year 70, depending on the material. Measure from installation, and treat it as a budgeting horizon rather than an expiry date.
- What shortens the life of water supply piping?
- Effectively the life of the house. Copper fails at pinholes from water chemistry rather than from age, so the horizon matters far less than what your water is doing to it.
Roots builds your home's maintenance plan automatically: every task above, timed to your home, with reminders and a Home Health Score that tracks your progress.
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