Water hardness in Eura
5.1 °dH moderately hard
Tap water in Eura is moderately hard: 5.1 °dH (91 mg/L · 5.3 gpg · 9.1 °fH).
Source: Euran vesihuoltolaitos, Molsi lahteva vesi (outgoing water), sample 2026/10098 (2026-06) · data checked 2026-11-07
Range across supply zones: 32–110 mg/L.
3 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Lohiluoma plant | 1.8 | 32 | soft |
| Molsi plant | 6.2 | 110 | moderately hard |
| Vaanii plant | 5.1 | 91 | moderately hard |
Finnish waterworks report hardness in °dH; most supplies are soft.
Water data
| Total hardness | 5.1 °dH |
|---|---|
| Utility | Euran vesihuoltolaitos (Eura municipality water utility) |
How Eura compares
- Tap water in Eura is 47 % harder than the median of the 76 cities we track in Finland (3.5 °dH).
- By hardness it ranks 11 of 76 in Finland (1 = hardest); 87 % of these cities have softer water.
- Nearest city with clearly softer water: Loimaa, 59 km away (2.7 °dH).
- Nearest city with clearly harder water: Rauma, 33 km away (7.1 °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 Eura
| 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 Eura water hard or soft?
It is moderately hard: 91 mg/L as CaCO₃ (5.3 gpg, 5.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Eura 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 Eura water?
5.3 gpg, equal to 5.1 °dH, 9.1 °fH or 91 mg/L calcium carbonate.
What dishwasher salt setting should I use in Eura?
For 91 mg/L (5.1 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Eura?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Euran vesihuoltolaitos, Molsi lahteva vesi (outgoing water), sample 2026/10098 (2026-06). Method: own measurement. Euran vesihuoltolaitos, Molsi lahteva vesi (outgoing water), sample 2026/10098 · Outdated figure? Tell us