Water hardness in Illora
32.9 °fH very hard
Tap water in Illora is very hard: 32.9 °fH (329 mg/L · 19.2 gpg · 18.4 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 18102 (2026-09) · data checked 2026-10-19
Range across supply zones: 184–349 mg/L.
SINAC, the Ministry of Health's drinking-water register, reports 329 mg/L CaCO₃ for Illora, very hard, with values between 184 and 349 mg/L. Towns of the western Granada vega are between 212 and 351 mg/L. Scale forms quickly in kettles and water heaters, and a softener is worth considering.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 32.9 °fH |
|---|
How Illora compares
- Tap water in Illora is 64 % harder than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 1158 of 4988 in Spain (1 = hardest); 77 % of these cities have softer water.
- In Granada it is number 35 of 171 cities; the regional median is 23.3 °fH.
- Nearest city with clearly softer water: Moraleda de Zafayona, 11 km away (22.5 °fH).
- Nearest city with clearly harder water: Montefrío, 14 km away (41.4 °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 Illora
| 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 Illora water hard or soft?
It is very hard: 329 mg/L as CaCO₃ (19.2 gpg, 18.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Illora 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 Illora water?
19.2 gpg, equal to 18.4 °dH, 32.9 °fH or 329 mg/L calcium carbonate.
What dishwasher salt setting should I use in Illora?
For 329 mg/L (18.4 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Illora?
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 18102 (2026-09). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 18102 · Outdated figure? Tell us