Water hardness in Nokia
4.1 °dH moderately hard
Tap water in Nokia is moderately hard: 4.1 °dH (72 mg/L · 4.2 gpg · 7.2 °fH).
Source: Nokian Vesi Oy, Keskimääräinen vedenlaatu Maatialan vedenpuhdistuslaitoksella 1.1.-31.12.2025 (2025) · data checked 2026-10-22
Range across supply zones: 59–86 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Maatiala treatment plant (Maatialan vedenpuhdistuslaitos), treated water | 4.8 | 86 | moderately hard |
| Mihari intake (Miharin pohjavedenottamo), treated water | 3.3 | 59 | soft |
Nokian Vesi publishes 2025 annual averages for each plant, not for each street. Treated water at Maatiala averages 4.8 °dH and at the Mihari intake 3.3 °dH. The utility's four network reports exist, but their values could not be read, so we cannot say which plant supplies which district of Nokia. Both plants are in the soft range.
Finnish waterworks report hardness in °dH; most supplies are soft.
Water data
| Total hardness | 4.1 °dH |
|---|---|
| Utility | Nokian Vesi Oy |
How Nokia compares
- Tap water in Nokia is 17 % harder than the median of the 76 cities we track in Finland (3.5 °dH).
- By hardness it ranks 27 of 76 in Finland (1 = hardest); 65 % of these cities have softer water.
- Nearest city with clearly softer water: Ylöjärvi, 11 km away (2.5 °dH).
- Nearest city with clearly harder water: Forssa, 73 km away (6 °dH).
Ranking of the hardest and softest water in Finland →
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 Nokia
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 4 °dH |
| AEG / Electrolux | 2 |
| Beko | 1st |
| 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 Nokia water hard or soft?
It is moderately hard: 72 mg/L as CaCO₃ (4.2 gpg, 4.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Nokia safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Finnish waterworks report hardness in °dH; most supplies are soft.
How many grains per gallon is Nokia water?
4.2 gpg, equal to 4.1 °dH, 7.2 °fH or 72 mg/L calcium carbonate.
What dishwasher salt setting should I use in Nokia?
For 72 mg/L (4.1 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Nokia?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Nokian Vesi Oy, Keskimääräinen vedenlaatu Maatialan vedenpuhdistuslaitoksella 1.1.-31.12.2025 (2025). Method: figure published by the water supplier. Nokian Vesi Oy, Keskimääräinen vedenlaatu Maatialan vedenpuhdistuslaitoksella 1.1.-31.12.2025 · Outdated figure? Tell us