Why is copper tubing often used for water lines?

It is durable and handles standard water duty.

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  1. It never needs fittings
  2. It is durable and handles standard water duty ✔
  3. It is the cheapest material

Why: Type L copper is thicker and standard duty for water lines and water service.

Huh, didn't know that: Type L copper is thicker and standard duty for water lines and water service.

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Copper is a solid choice for water lines.
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References

Answer: It is durable and handles standard water duty. Type L copper is thicker and standard duty for water lines and water service.

  1. Plumbing en.wikipedia.org/wiki/Plumbing
    type 'L' (thicker, standard duty for water lines and water service)
    Checked 2026-11-07.

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