Water hardness in Perchtoldsdorf
25.9 °dH very hard
Tap water in Perchtoldsdorf is very hard: 25.9 °dH (462 mg/L · 27 gpg · 46.2 °fH).
Source: Marktgemeinde Perchtoldsdorf Wasseranalyse Auszug (accredited lab) (2025-06) · data checked 2026-10-20
The municipality's own wells supply Perchtoldsdorf. The one accredited-lab extract we found, from a sample point in the middle supply zone in June 2025, gives 462.3 mg/L CaCO₃. This is a single sample point, so it is not confirmed as a citywide value. It is the highest value among the 15 cities in this batch, so scale on appliances is likely.
Angabe in °dH; Härtebereiche wie in Deutschland üblich.
Water data
| Total hardness | 25.9 °dH |
|---|---|
| Utility | Marktgemeinde Perchtoldsdorf (WVA, own wells) |
How Perchtoldsdorf compares
- Tap water in Perchtoldsdorf is 85 % harder than the median of the 159 cities we track in Austria (14 °dH).
- By hardness it ranks 1 of 159 in Austria (1 = hardest); 100 % of these cities have softer water.
- In Niederösterreich it is number 1 of 46 cities; the regional median is 15.5 °dH.
- Nearest city with clearly softer water: Brunn am Gebirge, 2 km away (15.2 °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 Perchtoldsdorf
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 26 °dH |
| AEG / Electrolux | 6 |
| Beko | 6th |
| Hoover | S4 |
| 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 Perchtoldsdorf water hard or soft?
It is very hard: 462 mg/L as CaCO₃ (27 gpg, 25.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Perchtoldsdorf 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 Perchtoldsdorf water?
27 gpg, equal to 25.9 °dH, 46.2 °fH or 462 mg/L calcium carbonate.
What dishwasher salt setting should I use in Perchtoldsdorf?
For 462 mg/L (25.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Perchtoldsdorf?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Marktgemeinde Perchtoldsdorf Wasseranalyse Auszug (accredited lab) (2025-06). Method: figure published by the water supplier. Marktgemeinde Perchtoldsdorf Wasseranalyse Auszug (accredited lab) · Outdated figure? Tell us