Water hardness in Caudebec-lès-Elbeuf
25.2 °fH very hard
Tap water in Caudebec-lès-Elbeuf is very hard: 25.2 °fH (252 mg/L · 14.7 gpg · 14.1 °dH).
Source: Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 76165 (2026-08) · data checked 2026-10-19
In Caudebec-lès-Elbeuf (Seine-Maritime), water from Metropole Rouen Normandie measures 252 mg/L as CaCO₃, which is classed as very hard. This is a measured value from the ARS SISE-Eaux health monitoring data (commune 76165), August 2026 record.
TH en °fH : douce < 15, moyennement dure 15–25, dure 25–35, très dure > 35 °fH (classes usuelles ARS).
Water data
| Total hardness | 25.2 °fH |
|---|---|
| Utility | Metropole Rouen Normandie |
How Caudebec-lès-Elbeuf compares
- Tap water in Caudebec-lès-Elbeuf is 5 % harder than the median of the 33641 cities we track in France (23.9 °fH).
- By hardness it ranks 15250 of 33641 in France (1 = hardest); 54 % of these cities have softer water.
- In Seine-Maritime it is number 528 of 682 cities; the regional median is 28.5 °fH.
- Nearest city with clearly softer water: Mont-Cauvaire, 33 km away (15.9 °fH).
- Nearest city with clearly harder water: Saint-Cyr-la-Campagne, 3 km away (32.2 °fH).
Ranking of the hardest and softest water in France →
What it means at home
- Severe scale: heater elements and washing-machine heaters fail early.
- Detergent use is very high; taps and screens coat within days.
- Dishwasher at maximum salt setting.
- An ion-exchange softener is practically essential; RO for drinking water.
How much salt will you use for softening?
Yes. At this hardness a softener pays for itself through appliance life and detergent.
Descale a coffee machine or kettle about every 1 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Caudebec-lès-Elbeuf
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 14 °dH |
| AEG / Electrolux | 3 |
| Beko | 4th |
| Hoover | S2 |
| LG | H3 |
From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →
FAQ
Is Caudebec-lès-Elbeuf water hard or soft?
It is very hard: 252 mg/L as CaCO₃ (14.7 gpg, 14.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Caudebec-lès-Elbeuf safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. TH en °fH : douce < 15, moyennement dure 15–25, dure 25–35, très dure > 35 °fH (classes usuelles ARS).
How many grains per gallon is Caudebec-lès-Elbeuf water?
14.7 gpg, equal to 14.1 °dH, 25.2 °fH or 252 mg/L calcium carbonate.
What dishwasher salt setting should I use in Caudebec-lès-Elbeuf?
For 252 mg/L (14.1 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Caudebec-lès-Elbeuf?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 76165 (2026-08). Method: own measurement. Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 76165 · Outdated figure? Tell us