Water hardness in Bolaños de Calatrava
37.1 °fH very hard
Tap water in Bolaños de Calatrava is very hard: 37.1 °fH (371 mg/L · 21.7 gpg · 20.8 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 13023 (2026-06) · data checked 2026-10-19
SINAC, the Ministry of Health's drinking-water register, reports 371 mg/L CaCO₃ for Bolaños de Calatrava, very hard. Towns in the Campo de Calatrava range from 189 mg/L in Granátula to 526 mg/L in Moral de Calatrava. Scale builds up fast in kettles and heating elements, and a softener is worth considering.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 37.1 °fH |
|---|
How Bolaños de Calatrava compares
- Tap water in Bolaños de Calatrava is 85 % harder than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 793 of 4988 in Spain (1 = hardest); 84 % of these cities have softer water.
- In Ciudad Real it is number 28 of 84 cities; the regional median is 28.1 °fH.
- Nearest city with clearly softer water: Granátula de Calatrava, 18 km away (18.9 °fH).
- Nearest city with clearly harder water: Moral de Calatrava, 14 km away (52.6 °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 Bolaños de Calatrava
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 21 °dH |
| AEG / Electrolux | 5 |
| Beko | 6th |
| Hoover | S3 |
| 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 Bolaños de Calatrava water hard or soft?
It is very hard: 371 mg/L as CaCO₃ (21.7 gpg, 20.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Bolaños de Calatrava 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 Bolaños de Calatrava water?
21.7 gpg, equal to 20.8 °dH, 37.1 °fH or 371 mg/L calcium carbonate.
What dishwasher salt setting should I use in Bolaños de Calatrava?
For 371 mg/L (20.8 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Bolaños de Calatrava?
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 13023 (2026-06). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 13023 · Outdated figure? Tell us