Water hardness in Carlet
33.5 °fH very hard
Tap water in Carlet is very hard: 33.5 °fH (335 mg/L · 19.6 gpg · 18.8 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 46085 (2026-07) · data checked 2026-10-19
Range across supply zones: 330–340 mg/L.
For Carlet, SINAC (the Ministry of Health's water-supply system) records 335 mg/L CaCO₃, with readings from 330 to 340 mg/L as of July 2026. Tap water in Valencia province comes mainly from the Turia and Júcar basins and from local aquifers that run through limestone and marl rich in calcium and magnesium. With water this hard, scale shortens the life of heating elements and hot-water pipes and often justifies treatment at home.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 33.5 °fH |
|---|
How Carlet compares
- Tap water in Carlet is 67 % harder than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 1102 of 4988 in Spain (1 = hardest); 78 % of these cities have softer water.
- In Valencia/València it is number 158 of 250 cities; the regional median is 36 °fH.
- Nearest city with clearly softer water: Carcaixent, 15 km away (17.9 °fH).
- Nearest city with clearly harder water: Massalavés, 9 km away (44.6 °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 Carlet
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 19 °dH |
| AEG / Electrolux | 5 |
| 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 Carlet water hard or soft?
It is very hard: 335 mg/L as CaCO₃ (19.6 gpg, 18.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Carlet 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 Carlet water?
19.6 gpg, equal to 18.8 °dH, 33.5 °fH or 335 mg/L calcium carbonate.
What dishwasher salt setting should I use in Carlet?
For 335 mg/L (18.8 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Carlet?
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 46085 (2026-07). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 46085 · Outdated figure? Tell us