Water hardness in Odesa
1 mmol/L moderately hard
Tap water in Odesa is moderately hard: 1 mmol/L (100 mg/L · 5.8 gpg · 5.6 °dH).
Source: Infoxvodokanal: якість питної води (table dated 02.10.2026) (2026-10) · data checked 2026-10-23
Ukrainian city supply is drawn from rivers and from artesian wells, depending on the town. The reported hardness is 100.1 mg/L CaCO₃. Expect light scale on taps and kettles; most homes manage with descaling.
DSanPiN 2.2.4-171-10 limit: 7 mmol/L (≈ 350 mg/L).
Water data
| Total hardness | 1 mmol/L |
|---|---|
| Utility | Infoxvodokanal |
How Odesa compares
- Tap water in Odesa is 56 % softer than the median of the 8 cities we track in Ukraine (2.26 mmol/L).
- By hardness it ranks 8 of 8 in Ukraine (1 = hardest); 0 % of these cities have softer water.
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 Odesa
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 6 °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 Odesa water hard or soft?
It is moderately hard: 100 mg/L as CaCO₃ (5.8 gpg, 5.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Odesa safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. DSanPiN 2.2.4-171-10 limit: 7 mmol/L (≈ 350 mg/L).
How many grains per gallon is Odesa water?
5.8 gpg, equal to 5.6 °dH, 10 °fH or 100 mg/L calcium carbonate.
What dishwasher salt setting should I use in Odesa?
For 100 mg/L (5.6 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Odesa?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Infoxvodokanal: якість питної води (table dated 02.10.2026) (2026-10). Method: figure published by the water supplier. Infoxvodokanal: якість питної води (table dated 02.10.2026) · Outdated figure? Tell us