Water hardness in Benicasim/Benicàssim
46.2 °fH very hard
Tap water in Benicasim/Benicàssim is very hard: 46.2 °fH (462 mg/L · 27 gpg · 25.9 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 12028 (2026-09) · data checked 2026-10-19
Range across supply zones: 228–681 mg/L.
The hardness recorded in SINAC for Benicasim/Benicàssim is 462 mg/L CaCO₃, with readings from 228 to 681 mg/L, based on September 2026 data, so it varies a lot with the supply point and the blend at the time. In Castellón province the water comes from intakes in the Mijares and Millars basins and from wells in coastal limestone aquifers, which add a lot of calcium and magnesium. With water this hard, scale shortens the life of heating elements and hot-water pipes and often justifies treatment at home.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 46.2 °fH |
|---|
How Benicasim/Benicàssim compares
- Tap water in Benicasim/Benicàssim is 130 % harder than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 361 of 4988 in Spain (1 = hardest); 93 % of these cities have softer water.
- In Castellón/Castelló it is number 33 of 134 cities; the regional median is 33.6 °fH.
- Nearest city with clearly softer water: Oropesa del Mar/Orpesa, 6 km away (5.5 °fH).
- Nearest city with clearly harder water: Costur, 21 km away (65.3 °fH).
Ranking of the hardest and softest water in Spain →
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 Benicasim/Benicàssim
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 26 °dH |
| AEG / Electrolux | 6 |
| Beko | 6th |
| Hoover | S4 |
| LG | H4 |
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 Benicasim/Benicàssim water hard or soft?
It is very hard: 462 mg/L as CaCO₃ (27 gpg, 25.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Benicasim/Benicàssim safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
How many grains per gallon is Benicasim/Benicàssim water?
27 gpg, equal to 25.9 °dH, 46.2 °fH or 462 mg/L calcium carbonate.
What dishwasher salt setting should I use in Benicasim/Benicàssim?
For 462 mg/L (25.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Benicasim/Benicàssim?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 12028 (2026-09). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 12028 · Outdated figure? Tell us