Water hardness in Beauvais
31.9 °fH very hard
Tap water in Beauvais is very hard: 31.9 °fH (319 mg/L · 18.6 gpg · 17.9 °dH).
Source: Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 60057 (2026-08) · data checked 2026-10-19
Range across supply zones: 319–320 mg/L.
In the Beauvaisis, drinking water is drawn from the chalk aquifer. Picardy chalk gives very hard, stable water: 319.0 mg/L CaCO₃, between 319.0 and 320.0 mg/L. A softener can be useful.
TH en °fH : douce < 15, moyennement dure 15–25, dure 25–35, très dure > 35 °fH (classes usuelles ARS).
Water data
| Total hardness | 31.9 °fH |
|---|---|
| Utility | S E A O |
How Beauvais compares
- Tap water in Beauvais is 33 % harder than the median of the 33641 cities we track in France (23.9 °fH).
- By hardness it ranks 5775 of 33641 in France (1 = hardest); 82 % of these cities have softer water.
- In Oise it is number 373 of 637 cities; the regional median is 32.8 °fH.
- Nearest city with clearly softer water: Rochy-Condé, 8 km away (14.6 °fH).
- Nearest city with clearly harder water: Rousseloy, 27 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 Beauvais
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 18 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| Hoover | S3 |
| 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 Beauvais water hard or soft?
It is very hard: 319 mg/L as CaCO₃ (18.6 gpg, 17.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Beauvais 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 Beauvais water?
18.6 gpg, equal to 17.9 °dH, 31.9 °fH or 319 mg/L calcium carbonate.
What dishwasher salt setting should I use in Beauvais?
For 319 mg/L (17.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Beauvais?
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 60057 (2026-08). Method: own measurement. Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 60057 · Outdated figure? Tell us