Water hardness in Tomelloso
29.3 °fH very hard
Tap water in Tomelloso is very hard: 29.3 °fH (293 mg/L · 17.1 gpg · 16.4 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 13082 (2026-05) · data checked 2026-10-19
The water comes from reservoirs and from La Mancha aquifer wells, largely in limestone terrain. Official analyses put the water at 293 mg/L CaCO₃, very hard. Limestone and sedimentary rock dissolve plenty of calcium and magnesium, hence the high hardness. Scale deposits quickly in kettles, heaters and heating elements; many households fit a softener.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 29.3 °fH |
|---|
How Tomelloso compares
- Tap water in Tomelloso is 46 % harder than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 1512 of 4988 in Spain (1 = hardest); 70 % of these cities have softer water.
- In Ciudad Real it is number 40 of 84 cities; the regional median is 28.1 °fH.
- Nearest city with clearly softer water: Llanos del Caudillo, 33 km away (10.3 °fH).
- Nearest city with clearly harder water: Arenales de San Gregorio, 11 km away (44.1 °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 Tomelloso
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 16 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| Hoover | S2 |
| 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 Tomelloso water hard or soft?
It is very hard: 293 mg/L as CaCO₃ (17.1 gpg, 16.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Tomelloso 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 Tomelloso water?
17.1 gpg, equal to 16.4 °dH, 29.3 °fH or 293 mg/L calcium carbonate.
What dishwasher salt setting should I use in Tomelloso?
For 293 mg/L (16.4 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Tomelloso?
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 13082 (2026-05). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 13082 · Outdated figure? Tell us