Water hardness in Santiago del Teide
17.9 °fH hard
Tap water in Santiago del Teide is hard: 17.9 °fH (179 mg/L · 10.5 gpg · 10 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 38040 (2026-10) · data checked 2026-10-19
Range across supply zones: 54–342 mg/L.
SINAC, the Ministry of Health's drinking-water register, reports 179 mg/L CaCO₃ for Santiago del Teide, hard, with a wide range from 54 to 342 mg/L. Neighbouring towns on Tenerife run from 16.5 to 248 mg/L, and the record does not name the sources. Scale builds up on kettles and taps; check the figure for your own area.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 17.9 °fH |
|---|
How Santiago del Teide compares
- Tap water in Santiago del Teide is 11 % softer than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 2715 of 4988 in Spain (1 = hardest); 45 % of these cities have softer water.
- In Santa Cruz de Tenerife it is number 12 of 48 cities; the regional median is 10 °fH.
- Nearest city with clearly softer water: Guía de Isora, 9 km away (10 °fH).
- Nearest city with clearly harder water: Silos, Los, 11 km away (24.8 °fH).
Ranking of the hardest and softest water in Spain →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Santiago del Teide
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 10 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S2 |
| LG | H2 |
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 Santiago del Teide water hard or soft?
It is hard: 179 mg/L as CaCO₃ (10.5 gpg, 10 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Santiago del Teide 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 Santiago del Teide water?
10.5 gpg, equal to 10 °dH, 17.9 °fH or 179 mg/L calcium carbonate.
What dishwasher salt setting should I use in Santiago del Teide?
For 179 mg/L (10 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Santiago del Teide?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
Source
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 38040 (2026-10). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 38040 · Outdated figure? Tell us