Water hardness in Valkeakoski
3 °dH soft
Tap water in Valkeakoski is soft: 3 °dH (54 mg/L · 3.1 gpg · 5.4 °fH).
Source: Valkeakosken kaupunki, Vesihuolto (2026) · data checked 2026-10-29
Valkeakoski's water comes from the municipal waterworks, and the city's water-supply page reports 53.6 mg/L as CaCO3. That is soft water. Scale build-up in kettles and heaters should be modest at this level. The page does not describe the water source, so we do not state one.
Finnish waterworks report hardness in °dH; most supplies are soft.
Water data
| Total hardness | 3 °dH |
|---|---|
| Utility | Valkeakosken vesihuoltolaitos |
How Valkeakoski compares
- Tap water in Valkeakoski is 13 % softer than the median of the 76 cities we track in Finland (3.5 °dH).
- By hardness it ranks 48 of 76 in Finland (1 = hardest); 33 % of these cities have softer water.
- Nearest city with clearly softer water: Hollola, 84 km away (1.8 °dH).
- Nearest city with clearly harder water: Nokia, 36 km away (4.1 °dH).
Ranking of the hardest and softest water in Finland →
What it means at home
- Little or no limescale in kettles, water heaters or washing machines.
- Soap lathers easily; water does not dry skin or hair.
- Dishwasher: salt setting at minimum or off.
- No softener needed; a jug filter only changes taste.
How much salt will you use for softening?
No. Water this soft does not need softening.
Descale a coffee machine or kettle about every 6 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Valkeakoski
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 3 °dH |
| AEG / Electrolux | 1 |
| Beko | 1st |
| Hoover | S0 |
| LG | H0 |
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 Valkeakoski water hard or soft?
It is soft: 54 mg/L as CaCO₃ (3.1 gpg, 3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Valkeakoski 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 Valkeakoski water?
3.1 gpg, equal to 3 °dH, 5.4 °fH or 54 mg/L calcium carbonate.
What dishwasher salt setting should I use in Valkeakoski?
For 54 mg/L (3 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Valkeakoski?
No. With soft water a softener adds nothing.
Source
Source: Valkeakosken kaupunki, Vesihuolto (2026). Method: figure published by the water supplier. Valkeakosken kaupunki, Vesihuolto · Outdated figure? Tell us