Water hardness in Villetaneuse
18.7 °fH very hard
Tap water in Villetaneuse is very hard: 18.7 °fH (187 mg/L · 10.9 gpg · 10.5 °dH).
Source: Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 93079 (2026-08) · data checked 2026-10-19
Villetaneuse (Seine-Saint-Denis) has a published hardness of 187 mg/L CaCO₃, which is very hard water. The value is measured by SISE-Eaux sanitary monitoring (ARS), commune 93079, August 2026. The listed service is Franciliane.
TH en °fH : douce < 15, moyennement dure 15–25, dure 25–35, très dure > 35 °fH (classes usuelles ARS).
Water data
| Total hardness | 18.7 °fH |
|---|---|
| Utility | Franciliane |
How Villetaneuse compares
- Tap water in Villetaneuse is 22 % softer than the median of the 33641 cities we track in France (23.9 °fH).
- By hardness it ranks 21243 of 33641 in France (1 = hardest); 37 % of these cities have softer water.
- In Seine-Saint-Denis it is number 38 of 39 cities; the regional median is 28 °fH.
- Nearest city with clearly softer water: Maisons-Laffitte, 15 km away (9.8 °fH).
- Nearest city with clearly harder water: L'Île-Saint-Denis, 3 km away (28 °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 Villetaneuse
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 10 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S2 |
| LG | H2 |
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 Villetaneuse water hard or soft?
It is very hard: 187 mg/L as CaCO₃ (10.9 gpg, 10.5 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Villetaneuse 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 Villetaneuse water?
10.9 gpg, equal to 10.5 °dH, 18.7 °fH or 187 mg/L calcium carbonate.
What dishwasher salt setting should I use in Villetaneuse?
For 187 mg/L (10.5 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Villetaneuse?
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 93079 (2026-08). Method: own measurement. Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 93079 · Outdated figure? Tell us