The water in Lyon
- Hardness
- 180–230 ppm
- Band
- Medium
Tap water in Lyon measures 180–230 ppm (10.1–12.9 °dH), which is medium, according to figures published by Eau publique du Grand Lyon.
Built for this water
Parthenope
The reference blend, built for the middle of the spread. In Naples that is the high ground — the Vomero, Posillipo, Chiaiano, the Sanità — where the water sits near 21 French degrees. Dense, dark, long on the tongue. If your water lands in the middle, start here and do not move.
See the blend →Against the SCA target zone
At its softest, Lyon sits 1.6× above the top of the zone the SCA Water Chart marks as its target (2.8–6.2 °dH). Read that as a distance, not a verdict: the chart maps taste outcomes, it does not grade cities.
The same number, three ways
- °dH
- 10.1–12.9 °dH
- °f
- 18–23 °f
- ppm CaCO₃
- 180–230 ppm
German utilities publish °dH, French and Italian ones °f, British and Irish ones ppm CaCO₃. Same water, three conventions — worth knowing if you compare your city with one abroad.
Of the 47 cities we publish, Lyon ranks 24th by hardness.
The other cities we publish in France
Cities with the closest water to this one
Closest match abroad
The water most like Lyon's, outside France, is Hamburg.
Hamburg — 91–327 ppm →Where this number comes from
Published by Eau publique du Grand Lyon. We do not estimate: a city without a figure we could read on the utility's own publication is not on this site at all.
Eau publique du Grand Lyon →