Innovation No. 21 of 77 in the book
Plumbing
Copper pipes installed beneath pyramid structures
- When
- c. 2480 BCE
- Dynasty
- 5th Dynasty
- Era
- Old Kingdom
The oldest metal plumbing on earth runs beneath an Egyptian pyramid complex, laid around 2480 BCE in the Old Kingdom.
Inside King Sahure’s temple at Abusir, workers installed copper pipes to carry water — a supply-and-drainage network built into sacred stone, some of it still in place.
They understood slope, sealed joints and covered channels: water where you wanted it, waste carried away.
Indoor plumbing, that most modern comfort, was threaded through Egyptian temples 4,500 years ago.
The German archaeologist Ludwig Borchardt dug it out in the early twentieth century. Beneath the temple's stone floors he traced roughly 380 metres — nearly 1,250 feet — of continuous copper pipe, hammered from high-purity metal rather than shaped from clay as in earlier Mesopotamian towns. It ran in sloped grooves cut into the limestone paving, sealed with gypsum plaster, draining five stone basins down to the valley. Sections are now in Cairo and in the Staatliche Museen in Berlin.
Frequently Asked Questions
Why is copper piping such a leap over clay?
Clay channels crack, leak and cannot hold a pressurised joint. Hammered copper can be shaped to a continuous run, sealed tight and buried under a stone floor without being reached again — which is what makes it plumbing rather than drainage.
Was this an expensive choice?
Extremely. Copper was among the most valuable materials of the Old Kingdom, normally reserved for tools and weapons. Committing hundreds of kilograms of it to a system nobody would ever see says how seriously ritual cleanliness was taken.