Water hardness in Carolina, La
7.7 °fH moderately hard
Tap water in Carolina, La is moderately hard: 7.7 °fH (77 mg/L · 4.5 gpg · 4.3 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 23024 (2026-09) · data checked 2026-10-19
Range across supply zones: 47–82 mg/L.
The hardness recorded in SINAC for La Carolina is 77 mg/L CaCO₃, with readings from 47 to 82 mg/L, based on September 2026 data. This town in Jaén lies on the edge of Sierra Morena, where poorly soluble siliceous rocks dominate, and supply comes from reservoirs and sources in the area. Limescale is hardly noticeable at this level, and most households do not need a softener.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 7.7 °fH |
|---|
How Carolina, La compares
- Tap water in Carolina, La is 62 % softer than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 3862 of 4988 in Spain (1 = hardest); 23 % of these cities have softer water.
- In Jaén it is number 79 of 96 cities; the regional median is 24.6 °fH.
- Nearest city with clearly softer water: Baños de la Encina, 14 km away (4.3 °fH).
- Nearest city with clearly harder water: Santa Elena, 8 km away (19.1 °fH).
Ranking of the hardest and softest water in Spain →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Carolina, La
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 4 °dH |
| AEG / Electrolux | 2 |
| Beko | 1st |
| Hoover | S1 |
| LG | H1 |
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 Carolina, La water hard or soft?
It is moderately hard: 77 mg/L as CaCO₃ (4.5 gpg, 4.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Carolina, La 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 Carolina, La water?
4.5 gpg, equal to 4.3 °dH, 7.7 °fH or 77 mg/L calcium carbonate.
What dishwasher salt setting should I use in Carolina, La?
For 77 mg/L (4.3 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Carolina, La?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 23024 (2026-09). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 23024 · Outdated figure? Tell us