Water hardness in Zizur Mayor/Zizur Nagusia
13.4 °fH hard
Tap water in Zizur Mayor/Zizur Nagusia is hard: 13.4 °fH (134 mg/L · 7.8 gpg · 7.5 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 31907 (2026-09) · data checked 2026-10-19
The hardness recorded in SINAC for Zizur Mayor/Zizur Nagusia is 134 mg/L CaCO₃, based on September 2026 data. The Pamplona area mancomunidad draws on the Arteta spring and the Eugi and Itoiz reservoirs depending on the season; Arteta rises in limestone terrain and carries a fair amount of hardness. Some scale shows on shower screens, kettles and taps, and a scale-reduction filter can be reasonable if you want to protect appliances.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 13.4 °fH |
|---|
How Zizur Mayor/Zizur Nagusia compares
- Tap water in Zizur Mayor/Zizur Nagusia is 33 % softer than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 3216 of 4988 in Spain (1 = hardest); 35 % of these cities have softer water.
- In Navarra it is number 111 of 136 cities; the regional median is 22.6 °fH.
- Nearest city with clearly softer water: Ansoáin / Antsoain, 6 km away (7.5 °fH).
- Nearest city with clearly harder water: Galar, 4 km away (19.9 °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 Zizur Mayor/Zizur Nagusia
| Brand | Setting for this water |
|---|---|
| Bosch | H01 |
| Miele | 8 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| 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 Zizur Mayor/Zizur Nagusia water hard or soft?
It is hard: 134 mg/L as CaCO₃ (7.8 gpg, 7.5 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Zizur Mayor/Zizur Nagusia 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 Zizur Mayor/Zizur Nagusia water?
7.8 gpg, equal to 7.5 °dH, 13.4 °fH or 134 mg/L calcium carbonate.
What dishwasher salt setting should I use in Zizur Mayor/Zizur Nagusia?
For 134 mg/L (7.5 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Zizur Mayor/Zizur Nagusia?
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 31907 (2026-09). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 31907 · Outdated figure? Tell us