Water hardness in Hyvinkää
4.2 °dH moderately hard
Tap water in Hyvinkää is moderately hard: 4.2 °dH (75 mg/L · 4.4 gpg · 7.5 °fH).
Source: Hyvinkään Vesi, Tietoa vedestä (network water, page text) (2022-11) · data checked 2026-10-22
Range across supply zones: 50–100 mg/L.
This figure is over 3 years old; hardness may have changed.
Hyvinkään Vesi describes its network water as soft, at 0.5 to 1.0 mmol/L, with one range for the whole network and no zones. The only date on that page is 11 November 2022, so the figure is marked stale and should be checked against a newer report. Hardness in a groundwater supply tends to change slowly, but we cannot confirm that for this network.
Finnish waterworks report hardness in °dH; most supplies are soft.
Water data
| Total hardness | 4.2 °dH |
|---|---|
| Utility | Hyvinkään Vesi (Hyvinkään kaupungin liikelaitos) |
How Hyvinkää compares
- Tap water in Hyvinkää is 21 % harder than the median of the 76 cities we track in Finland (3.5 °dH).
- By hardness it ranks 22 of 76 in Finland (1 = hardest); 72 % of these cities have softer water.
- In 01 it is number 2 of 6 cities; the regional median is 4.2 °dH.
- Nearest city with clearly softer water: Vantaa, 39 km away (3 °dH).
- Nearest city with clearly harder water: Forssa, 71 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 Hyvinkää
| 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 Hyvinkää water hard or soft?
It is moderately hard: 75 mg/L as CaCO₃ (4.4 gpg, 4.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Hyvinkää 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 Hyvinkää water?
4.4 gpg, equal to 4.2 °dH, 7.5 °fH or 75 mg/L calcium carbonate.
What dishwasher salt setting should I use in Hyvinkää?
For 75 mg/L (4.2 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Hyvinkää?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Hyvinkään Vesi, Tietoa vedestä (network water, page text) (2022-11). Method: computed from supplier's calcium and magnesium. Hyvinkään Vesi, Tietoa vedestä (network water, page text) · Outdated figure? Tell us