Water hardness in Ventspils
2.22 mmol/L very hard
Tap water in Ventspils is very hard: 2.22 mmol/L (222 mg/L · 13 gpg · 12.4 °dH).
Source: SIA Udeka weekly drinking water test results (Dzeramā ūdens testēšanas rezultāti), lab of Ventspils PSIA UDEKA (2026-10) · data checked 2026-10-22
SIA Udeka's weekly drinking-water test for Ventspils, dated 16 October 2026, shows total hardness of 222 mg/L CaCO3 in the network column. This is a single weekly sample, so it shows one point in time and not a yearly average. We have not seen several weeks side by side, so the usual range is unknown. At this level limescale on kettles and heaters is a likely effect.
Latvian suppliers report total hardness in mmol/L.
Water data
| Total hardness | 2.22 mmol/L |
|---|---|
| Utility | SIA Udeka (Ventspils PSIA UDEKA) |
How Ventspils compares
- Tap water in Ventspils is close to the median of the 3 cities we track in Latvia (2.22 mmol/L).
- By hardness it ranks 2 of 3 in Latvia (1 = hardest); 50 % of these cities have softer water.
- Nearest city with clearly harder water: Jurmala, 141 km away (3.29 mmol/L).
What it means at home
- Severe scale: heater elements and washing-machine heaters fail early.
- Detergent use is very high; taps and screens coat within days.
- Dishwasher at maximum salt setting.
- An ion-exchange softener is practically essential; RO for drinking water.
How much salt will you use for softening?
Yes. At this hardness a softener pays for itself through appliance life and detergent.
Descale a coffee machine or kettle about every 1 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Ventspils
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 12 °dH |
| AEG / Electrolux | 3 |
| Beko | 3rd |
| Hoover | S2 |
| LG | H2 |
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 Ventspils water hard or soft?
It is very hard: 222 mg/L as CaCO₃ (13 gpg, 12.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Ventspils safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Latvian suppliers report total hardness in mmol/L.
How many grains per gallon is Ventspils water?
13 gpg, equal to 12.4 °dH, 22.2 °fH or 222 mg/L calcium carbonate.
What dishwasher salt setting should I use in Ventspils?
For 222 mg/L (12.4 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Ventspils?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: SIA Udeka weekly drinking water test results (Dzeramā ūdens testēšanas rezultāti), lab of Ventspils PSIA UDEKA (2026-10). Method: own measurement. SIA Udeka weekly drinking water test results (Dzeramā ūdens testēšanas rezultāti), lab of Ventspils PSIA UDEKA · Outdated figure? Tell us