Water hardness in Conil de la Frontera
18 °fH very hard
Tap water in Conil de la Frontera is very hard: 18 °fH (180 mg/L · 10.5 gpg · 10.1 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 11014 (2026-09) · data checked 2026-10-19
Range across supply zones: 22–220 mg/L.
For Conil de la Frontera, SINAC (the Ministry of Health's water-supply system) records 180 mg/L CaCO₃, with readings from 22 to 220 mg/L as of September 2026, so it varies a lot with the supply point and the blend at the time. In Cádiz province water comes from mountain reservoirs and local sources; hardness varies with the blend, softer where sandstone dominates and harder where there is limestone. Scale builds up regularly in kettles, taps and the washing-machine heating element, so they need frequent cleaning.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 18 °fH |
|---|
How Conil de la Frontera compares
- Tap water in Conil de la Frontera is 10 % softer than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 2693 of 4988 in Spain (1 = hardest); 46 % of these cities have softer water.
- In Cádiz it is number 33 of 43 cities; the regional median is 21.4 °fH.
- Nearest city with clearly softer water: Tarifa, 44 km away (10.6 °fH).
- Nearest city with clearly harder water: Vejer de la Frontera, 10 km away (29 °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 Conil de la Frontera
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 10 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S2 |
| 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 Conil de la Frontera water hard or soft?
It is very hard: 180 mg/L as CaCO₃ (10.5 gpg, 10.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Conil de la Frontera 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 Conil de la Frontera water?
10.5 gpg, equal to 10.1 °dH, 18 °fH or 180 mg/L calcium carbonate.
What dishwasher salt setting should I use in Conil de la Frontera?
For 180 mg/L (10.1 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Conil de la Frontera?
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 11014 (2026-09). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 11014 · Outdated figure? Tell us