Water hardness in Archena
39 °fH very hard
Tap water in Archena is very hard: 39 °fH (390 mg/L · 22.8 gpg · 21.8 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 30009 (2026-09) · data checked 2026-10-19
Range across supply zones: 385–395 mg/L.
The hardness recorded in SINAC for Archena is 390 mg/L CaCO₃, with readings from 385 to 395 mg/L, based on September 2026 data. Supply in the Murcia region relies on the Mancomunidad de los Canales del Taibilla, which blends water from the Taibilla river, the Tajo-Segura transfer and desalination plants, along with local sources. 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 | 39 °fH |
|---|
How Archena compares
- Tap water in Archena is 94 % harder than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 678 of 4988 in Spain (1 = hardest); 86 % of these cities have softer water.
- In Murcia it is number 7 of 45 cities; the regional median is 24.9 °fH.
- Nearest city with clearly softer water: Villanueva del Río Segura, 3 km away (23.3 °fH).
- Nearest city with clearly harder water: Aielo de Rugat, 119 km away (49.8 °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 Archena
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 22 °dH |
| AEG / Electrolux | 5 |
| 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 Archena water hard or soft?
It is very hard: 390 mg/L as CaCO₃ (22.8 gpg, 21.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Archena 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 Archena water?
22.8 gpg, equal to 21.8 °dH, 39 °fH or 390 mg/L calcium carbonate.
What dishwasher salt setting should I use in Archena?
For 390 mg/L (21.8 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Archena?
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 30009 (2026-09). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 30009 · Outdated figure? Tell us