Water hardness in Montilla
32.5 °fH very hard
Tap water in Montilla is very hard: 32.5 °fH (325 mg/L · 19 gpg · 18.2 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 14042 (2026-05) · data checked 2026-10-19
SINAC data from the Ministry of Health for May 2026 put Montilla at 325 mg/L CaCO₃. In the Subbética area of Córdoba the water comes from springs and wells in limestone and dolomite ranges, which add a lot of calcium and magnesium. This hardness forms limescale quickly in kettles, water heaters and washing machines; in a home, a softener is usually worth considering.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 32.5 °fH |
|---|
How Montilla compares
- Tap water in Montilla is 62 % harder than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 1190 of 4988 in Spain (1 = hardest); 76 % of these cities have softer water.
- In Córdoba it is number 5 of 75 cities; the regional median is 12.5 °fH.
- Nearest city with clearly softer water: Cabra, 18 km away (23.9 °fH).
- Nearest city with clearly harder water: Badolatosa, 29 km away (42.4 °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 Montilla
| 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 Montilla water hard or soft?
It is very hard: 325 mg/L as CaCO₃ (19 gpg, 18.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Montilla 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 Montilla water?
19 gpg, equal to 18.2 °dH, 32.5 °fH or 325 mg/L calcium carbonate.
What dishwasher salt setting should I use in Montilla?
For 325 mg/L (18.2 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Montilla?
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 14042 (2026-05). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 14042 · Outdated figure? Tell us