Water hardness in Les Pennes-Mirabeau
19.5 °fH very hard
Tap water in Les Pennes-Mirabeau is very hard: 19.5 °fH (195 mg/L · 11.4 gpg · 10.9 °dH).
Source: Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 13071 (2026-08) · data checked 2026-10-19
Range across supply zones: 175–216 mg/L.
Water in Les Pennes-Mirabeau (Bouches-du-Rhône) is supplied by the Société Eau de Marseille Métropole. The ARS health-control data (August 2026) give a median hardness of 195 mg/L CaCO₃, between 175 and 216 mg/L depending on the sampling point. This is very hard water.
TH en °fH : douce < 15, moyennement dure 15–25, dure 25–35, très dure > 35 °fH (classes usuelles ARS).
Water data
| Total hardness | 19.5 °fH |
|---|---|
| Utility | Societe Eau De Marseille Metropole |
How Les Pennes-Mirabeau compares
- Tap water in Les Pennes-Mirabeau is 18 % softer than the median of the 33641 cities we track in France (23.9 °fH).
- By hardness it ranks 20685 of 33641 in France (1 = hardest); 38 % of these cities have softer water.
- In Bouches-du-Rhône it is number 84 of 118 cities; the regional median is 22.4 °fH.
- Nearest city with clearly softer water: Collobrières, 83 km away (10.2 °fH).
- Nearest city with clearly harder water: Roquevaire, 25 km away (40.1 °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 Les Pennes-Mirabeau
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 11 °dH |
| AEG / Electrolux | 3 |
| 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 Les Pennes-Mirabeau water hard or soft?
It is very hard: 195 mg/L as CaCO₃ (11.4 gpg, 10.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Les Pennes-Mirabeau 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 Les Pennes-Mirabeau water?
11.4 gpg, equal to 10.9 °dH, 19.5 °fH or 195 mg/L calcium carbonate.
What dishwasher salt setting should I use in Les Pennes-Mirabeau?
For 195 mg/L (10.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Les Pennes-Mirabeau?
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 13071 (2026-08). Method: own measurement. Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 13071 · Outdated figure? Tell us