Water hardness in Valdés
1.1 °fH soft
Tap water in Valdés is soft: 1.1 °fH (11 mg/L · 0.6 gpg · 0.6 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 33034 (2026-03) · data checked 2026-10-19
Range across supply zones: 8–16 mg/L.
SINAC, the Ministry of Health's drinking-water register, reports 11 mg/L CaCO₃ for Valdés, soft, with values between 8 and 16 mg/L. Western Asturias has mostly siliceous bedrock, and nearby councils in the dataset range from 6.6 to 100 mg/L. Scale is very light; soft-water detergent doses are enough.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 1.1 °fH |
|---|
How Valdés compares
- Tap water in Valdés is 95 % softer than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 4867 of 4988 in Spain (1 = hardest); 2 % of these cities have softer water.
- In Asturias it is number 48 of 49 cities; the regional median is 11.5 °fH.
- Nearest city with clearly softer water: Coaña, 22 km away (0.7 °fH).
- Nearest city with clearly harder water: Navia, 14 km away (3.3 °fH).
Ranking of the hardest and softest water in Spain →
What it means at home
- Little or no limescale in kettles, water heaters or washing machines.
- Soap lathers easily; water does not dry skin or hair.
- Dishwasher: salt setting at minimum or off.
- No softener needed; a jug filter only changes taste.
How much salt will you use for softening?
No. Water this soft does not need softening.
Descale a coffee machine or kettle about every 6 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Valdés
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 1 °dH |
| AEG / Electrolux | 1 |
| Beko | 1st |
| Hoover | S0 |
| LG | H0 |
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 Valdés water hard or soft?
It is soft: 11 mg/L as CaCO₃ (0.6 gpg, 0.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Valdés 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 Valdés water?
0.6 gpg, equal to 0.6 °dH, 1.1 °fH or 11 mg/L calcium carbonate.
What dishwasher salt setting should I use in Valdés?
For 11 mg/L (0.6 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Valdés?
No. With soft water a softener adds nothing.
Source
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 33034 (2026-03). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 33034 · Outdated figure? Tell us