Water hardness in Sankt Valentin
21.3 °dH very hard
Tap water in Sankt Valentin is very hard: 21.3 °dH (380 mg/L · 22.2 gpg · 38 °fH).
Source: Stadtgemeinde Sankt Valentin - Ortsnetz St. Valentin Trinkwasseruntersuchung April 2026 (2026-04) · data checked 2026-10-22
The Ortsnetz Sankt Valentin report from April 2026 gives 380.2 mg/L CaCO₃ at the Bauhof sample point. The hardness is computed, and the carbonate hardness is a little lower. Other supply networks of the municipality were not checked, so this may not apply across the whole area. This is very hard water, and a softener or descaling plan is worth considering.
Angabe in °dH; Härtebereiche wie in Deutschland üblich.
Water data
| Total hardness | 21.3 °dH |
|---|---|
| Utility | Stadtgemeinde Sankt Valentin (WVA, Bauabteilung Fachgebiet Wasser) |
How Sankt Valentin compares
- Tap water in Sankt Valentin is 52 % harder than the median of the 159 cities we track in Austria (14 °dH).
- By hardness it ranks 4 of 159 in Austria (1 = hardest); 98 % of these cities have softer water.
- In Niederösterreich it is number 3 of 46 cities; the regional median is 15.5 °dH.
- Nearest city with clearly softer water: Perg, 13 km away (12.4 °dH).
Ranking of the hardest and softest water in Austria →
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 Sankt Valentin
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 21 °dH |
| AEG / Electrolux | 5 |
| Beko | 6th |
| Hoover | S3 |
| LG | H4 |
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 Sankt Valentin water hard or soft?
It is very hard: 380 mg/L as CaCO₃ (22.2 gpg, 21.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Sankt Valentin safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Angabe in °dH; Härtebereiche wie in Deutschland üblich.
How many grains per gallon is Sankt Valentin water?
22.2 gpg, equal to 21.3 °dH, 38 °fH or 380 mg/L calcium carbonate.
What dishwasher salt setting should I use in Sankt Valentin?
For 380 mg/L (21.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Sankt Valentin?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtgemeinde Sankt Valentin - Ortsnetz St. Valentin Trinkwasseruntersuchung April 2026 (2026-04). Method: computed from supplier's calcium and magnesium. Stadtgemeinde Sankt Valentin - Ortsnetz St. Valentin Trinkwasseruntersuchung April 2026 · Outdated figure? Tell us