Water hardness in Coín
33 °fH very hard
Tap water in Coín is very hard: 33 °fH (330 mg/L · 19.3 gpg · 18.5 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 29042 (2026-09) · data checked 2026-10-19
Range across supply zones: 303–467 mg/L.
SINAC data from the Ministry of Health for September 2026 put Coín at 330 mg/L CaCO₃, with readings from 303 to 467 mg/L. In Málaga province much of the water comes from springs and wells in limestone and dolomite ranges such as Mijas, Blanca and Almijara, and from reservoirs in the Mediterranean basin. This hardness forms limescale quickly in kettles, water heaters and washing machines; in a home, a softener is usually worth considering.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 33 °fH |
|---|
How Coín compares
- Tap water in Coín is 64 % harder than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 1145 of 4988 in Spain (1 = hardest); 77 % of these cities have softer water.
- In Málaga it is number 21 of 103 cities; the regional median is 26 °fH.
- Nearest city with clearly softer water: Alozaina, 11 km away (26.2 °fH).
- Nearest city with clearly harder water: Cártama, 13 km away (50.8 °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 Coín
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 18 °dH |
| AEG / Electrolux | 4 |
| 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 Coín water hard or soft?
It is very hard: 330 mg/L as CaCO₃ (19.3 gpg, 18.5 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Coín 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 Coín water?
19.3 gpg, equal to 18.5 °dH, 33 °fH or 330 mg/L calcium carbonate.
What dishwasher salt setting should I use in Coín?
For 330 mg/L (18.5 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Coín?
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 29042 (2026-09). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 29042 · Outdated figure? Tell us