Water hardness in Pontinha
86 mg/L moderately hard
Tap water in Pontinha is moderately hard: 86 mg/L (5 gpg · 4.8 °dH · 8.6 °fH).
Source: SIMAR Loures-Odivelas - relatorio trimestral 2.º trimestre 2021 (zona LO2) (2021) · data checked 2026-11-05
This figure is over 3 years old; hardness may have changed.
Pontinha is served by SIMAR Loures-Odivelas, zone LO2. The only report we could use is the second quarter of 2021, which shows 86 mg/L CaCO₃, moderate. That is several years old, so treat it as indicative and check the utility's latest quarterly report. For a moderate value, regular descaling of the kettle is usually enough.
Portuguese operators report "dureza total" in mg/L CaCO₃ to ERSAR.
Water data
| Total hardness | 86 mg/L |
|---|---|
| Utility | SIMAR Loures-Odivelas (zone LO2) |
How Pontinha compares
- Tap water in Pontinha is close to the median of the 77 cities we track in Portugal (83 mg/L).
- By hardness it ranks 36 of 77 in Portugal (1 = hardest); 51 % of these cities have softer water.
- In 14 it is number 2 of 19 cities; the regional median is 75 mg/L.
- Nearest city with clearly softer water: Alfornelos, 1 km away (42 mg/L).
- Nearest city with clearly harder water: Corroios, 15 km away (232 mg/L).
Ranking of the hardest and softest water in Portugal →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Pontinha
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 5 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| LG | H1 |
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 Pontinha water hard or soft?
It is moderately hard: 86 mg/L as CaCO₃ (5 gpg, 4.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Pontinha safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Portuguese operators report "dureza total" in mg/L CaCO₃ to ERSAR.
How many grains per gallon is Pontinha water?
5 gpg, equal to 4.8 °dH, 8.6 °fH or 86 mg/L calcium carbonate.
What dishwasher salt setting should I use in Pontinha?
For 86 mg/L (4.8 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Pontinha?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: SIMAR Loures-Odivelas - relatorio trimestral 2.º trimestre 2021 (zona LO2) (2021). Method: older figure, source currently unavailable. SIMAR Loures-Odivelas - relatorio trimestral 2.º trimestre 2021 (zona LO2) · Outdated figure? Tell us