Water hardness in Loimaa
2.7 °dH soft
Tap water in Loimaa is soft: 2.7 °dH (49 mg/L · 2.9 gpg · 4.9 °fH).
Source: Loimaan Vesi, Veden hankinta ja jakelu (web page) (2026) · data checked 2026-11-05
Loimaan Vesi gives the average total hardness of its distributed water as 0.49 mmol/L, or 2.74 °dH, on its water supply page. The page carries no measurement period or update date, so check it for newer figures. No zones are listed. This is very soft water, and descaling products are seldom needed.
Finnish waterworks report hardness in °dH; most supplies are soft.
Water data
| Total hardness | 2.7 °dH |
|---|---|
| Utility | Loimaan Vesi (City of Loimaa business unit) |
How Loimaa compares
- Tap water in Loimaa is 21 % softer than the median of the 76 cities we track in Finland (3.5 °dH).
- By hardness it ranks 60 of 76 in Finland (1 = hardest); 19 % of these cities have softer water.
- Nearest city with clearly softer water: Hollola, 133 km away (1.8 °dH).
- Nearest city with clearly harder water: Forssa, 31 km away (6 °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 Loimaa
| 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 Loimaa water hard or soft?
It is soft: 49 mg/L as CaCO₃ (2.9 gpg, 2.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Loimaa 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 Loimaa water?
2.9 gpg, equal to 2.7 °dH, 4.9 °fH or 49 mg/L calcium carbonate.
What dishwasher salt setting should I use in Loimaa?
For 49 mg/L (2.7 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Loimaa?
No. With soft water a softener adds nothing.
Source
Source: Loimaan Vesi, Veden hankinta ja jakelu (web page) (2026). Method: figure published by the water supplier. Loimaan Vesi, Veden hankinta ja jakelu (web page) · Outdated figure? Tell us