Water hardness in Klaukkala
4.9 °dH moderately hard
Tap water in Klaukkala is moderately hard: 4.9 °dH (88 mg/L · 5.1 gpg · 8.8 °fH).
Source: Nurmijärvi, Vedenlaatu nettiin 2023 (verkostovesi KLA-1V, KLA-2H) (2023) · data checked 2026-10-29
Range across supply zones: 76–100 mg/L.
Klaukkala is served by Nurmijärven Vesi. The 2023 network-water results from two sampling points give a median of 88.1 mg/L, within a range of 76.1 to 100.1 mg/L, which is moderate. Two points cannot show every part of the network, so a single street may differ slightly.
Finnish waterworks report hardness in °dH; most supplies are soft.
Water data
| Total hardness | 4.9 °dH |
|---|---|
| Calcium (mg/L) | 22 |
| Magnesium (mg/L) | 8 |
| Utility | Nurmijärven Vesi |
How Klaukkala compares
- Tap water in Klaukkala is 42 % harder than the median of the 76 cities we track in Finland (3.5 °dH).
- By hardness it ranks 13 of 76 in Finland (1 = hardest); 84 % of these cities have softer water.
- Nearest city with clearly softer water: Vantaa, 19 km away (3 °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 Klaukkala
| 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 Klaukkala water hard or soft?
It is moderately hard: 88 mg/L as CaCO₃ (5.1 gpg, 4.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Klaukkala 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 Klaukkala water?
5.1 gpg, equal to 4.9 °dH, 8.8 °fH or 88 mg/L calcium carbonate.
What dishwasher salt setting should I use in Klaukkala?
For 88 mg/L (4.9 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Klaukkala?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Nurmijärvi, Vedenlaatu nettiin 2023 (verkostovesi KLA-1V, KLA-2H) (2023). Method: figure published by the water supplier. Nurmijärvi, Vedenlaatu nettiin 2023 (verkostovesi KLA-1V, KLA-2H) · Outdated figure? Tell us