Recycled water pipes — Recycled water is delivered through purple pipes, a distribution system that is completely separate from the drinking water infrastructure.

May 5, 2022

Irvine’s famous purple pipes

by TOM BERG

Irvine pioneered recycled water in the 1960s. It even invented the purple- colored pipe to distinguish recycled from drinking water supplies. This color – Pantone 240 and 241, to be exact – is now used around the world, including Israel, South Africa and Australia.

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