Water hardness in Borriana/Burriana
43.4 °fH very hard
Tap water in Borriana/Burriana is very hard: 43.4 °fH (434 mg/L · 25.4 gpg · 24.3 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 12032 (2026-06) · data checked 2026-10-19
Range across supply zones: 198–542 mg/L.
Water comes from wells on the coastal plain and from the province's river basins, over limestone terrain. Official analyses put the water at 434 mg/L CaCO₃, very hard, with values between 198 and 542 mg/L depending on network, source and season. Limestone and sedimentary rock dissolve plenty of calcium and magnesium, hence the high hardness. Scale on taps and shower screens is common, and water-heater elements foul sooner.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 43.4 °fH |
|---|
How Borriana/Burriana compares
- Tap water in Borriana/Burriana is 116 % harder than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 480 of 4988 in Spain (1 = hardest); 90 % of these cities have softer water.
- In Castellón/Castelló it is number 40 of 134 cities; the regional median is 33.6 °fH.
- Nearest city with clearly softer water: Moncofa, 12 km away (32.6 °fH).
- Nearest city with clearly harder water: Almenara, 20 km away (59.6 °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 Borriana/Burriana
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 24 °dH |
| AEG / Electrolux | 6 |
| Beko | 6th |
| Hoover | S3 |
| LG | H4 |
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 Borriana/Burriana water hard or soft?
It is very hard: 434 mg/L as CaCO₃ (25.4 gpg, 24.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Borriana/Burriana 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 Borriana/Burriana water?
25.4 gpg, equal to 24.3 °dH, 43.4 °fH or 434 mg/L calcium carbonate.
What dishwasher salt setting should I use in Borriana/Burriana?
For 434 mg/L (24.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Borriana/Burriana?
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 12032 (2026-06). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 12032 · Outdated figure? Tell us