From Roman Sewers to Modern Bidets: A History of Water-Based Hygiene
By James Hargreaves · Updated June 2026 · 7 min read
- Ancient Rome built an extraordinary water infrastructure — aqueducts, public latrines, and the famous Cloaca Maxima sewer
- Roman bathroom habits were surprisingly communal, with public latrines seating dozens of people in a row
- The idea of using water as part of personal cleaning is far older than the bidet itself, which only formalised it as a fixture in 18th-century France
- Today's handheld sprayers are a direct, much simpler descendant of millennia-old water engineering
How Ancient Rome Solved a Problem Cities Still Face Today
Long before indoor plumbing was taken for granted, the Romans built one of the ancient world's most ambitious water systems. A network of aqueducts carried fresh water into cities from sources sometimes many miles away, supplying public baths, fountains, and eventually a sewer system that became legendary in its own right: the Cloaca Maxima, or "Greatest Sewer." Roman writers were genuinely proud of it — Pliny the Elder reportedly called it one of the most remarkable achievements of the entire civilisation.
Public latrines were a striking feature of Roman city life. Rather than private cubicles, Roman latrines were often communal benches with rows of keyhole-shaped openings, seating dozens of people side by side above a channel of flowing water. It's a world away from modern ideas of bathroom privacy, but it reflected a genuine investment in moving waste away from where people lived — a problem every growing city has had to solve in one way or another.
What Romans Actually Used to Clean Themselves
Roman sanitation history includes one detail that tends to surprise people: rather than paper, which didn't exist in the form we know it, many Romans are thought to have used a tersorium — a sponge attached to a stick — that could be rinsed in a channel of flowing water running along the latrine floor. Some historians debate exactly how this tool was used and how widely, but the broader pattern is clear: water played a central role in Roman ideas of cleaning, in a way that's strikingly similar to how a bidet works today.
It's worth being careful not to romanticise this too much. Archaeologists who study Roman sanitation, including researchers like Ann Olga Koloski-Ostrow, have pointed out that having sewers and latrines didn't automatically mean Roman cities were clean by modern standards — streets were often littered with all kinds of waste, and ideas about cleanliness and privacy were genuinely different from ours. What the Romans did demonstrate, though, was an early and sophisticated understanding that flowing water could solve sanitation problems at scale — an idea that, in a much more refined form, underpins both modern sewer systems and the bidet.
If you ever visit Pompeii or Ostia Antica near Rome, both sites have well-preserved Roman public latrines you can see in person — a genuinely interesting stop if you're curious about how this history actually looked.
From Roman Engineering to a French Invention
After the fall of Rome, much of this engineered approach to sanitation was lost or fell into disrepair across Europe for centuries. Water-based washing as a deliberate hygiene practice didn't disappear from human life, but it took a very different path to re-emerge as a designed bathroom fixture. The bidet itself, as a specific piece of furniture, was invented in France in the early 18th century — a porcelain basin set into a wooden cabinet, used by the aristocracy for intimate washing long before indoor plumbing connected it to a water supply.
From there, the idea spread gradually across Europe and beyond, evolving from a hand-filled basin to a plumbed fixture in the 19th century, and eventually to the handheld sprayers and electric seats available today. The underlying principle — that water cleans more thoroughly than a dry material alone — is the same idea the Romans were working with two thousand years earlier, just engineered very differently.
Why This History Still Matters
It's easy to think of a bidet sprayer as a modern gadget, but the core idea behind it is genuinely ancient. Civilisations across history — Roman, and later French, and more recently Japanese innovation in electric bidet seats — have repeatedly landed on the same basic conclusion: water does a more thorough job than dry materials alone. What's changed isn't the principle, but the engineering: from a stone channel and a sponge on a stick, to a porcelain basin, to a few pounds' worth of plastic and a flexible hose that fits onto any modern UK toilet.
Understanding that history doesn't change how a sprayer works today, but it does put a relatively unfamiliar product, for many British households, into a much longer and more reassuring context. It's not a fad — it's one of the oldest ideas in personal hygiene, simply made more convenient.
From Ancient Engineering to Your Bathroom Today
You obviously don't need Roman-scale infrastructure to benefit from the same basic idea. A modern handheld bidet sprayer connects to your existing toilet's water supply in minutes, with none of the engineering Rome needed to bring water into the city in the first place. It's a small reminder that some good ideas really do stand the test of time — just delivered a little differently.
Curious how a sprayer fits into a modern UK bathroom? Our guide to bidet sprayers for UK homes covers the practical side in more detail.