Water hardness in Perg
12.4 °dH very hard
Tap water in Perg is very hard: 12.4 °dH (221 mg/L · 12.9 gpg · 22.1 °fH).
Source: Wasserverband Gruppenwasserversorgung Perg und Umgebung, Trinkwasseruntersuchung HB Perg (2025-01) · data checked 2026-11-05
The figures for Perg come from a drinking-water analysis of the Perg service reservoir (Hochbehälter) dated January 2025. It gives 221.3 mg/L CaCO₃, about 12.4 °dH, which falls in the very hard category. The test report does not say where the water is sourced, so we make no claim about it; at this level, limescale on taps and in kettles is likely.
Angabe in °dH; Härtebereiche wie in Deutschland üblich.
Water data
| Total hardness | 12.4 °dH |
|---|---|
| Utility | Wasserverband Gruppenwasserversorgung Perg und Umgebung (Hochbehälter Perg) |
How Perg compares
- Tap water in Perg is 11 % softer than the median of the 159 cities we track in Austria (14 °dH).
- By hardness it ranks 96 of 159 in Austria (1 = hardest); 40 % of these cities have softer water.
- In Oberösterreich it is number 8 of 10 cities; the regional median is 14.5 °dH.
- Nearest city with clearly softer water: Freistadt, 31 km away (4.1 °dH).
- Nearest city with clearly harder water: Sankt Valentin, 13 km away (21.3 °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 Perg
| 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 Perg water hard or soft?
It is very hard: 221 mg/L as CaCO₃ (12.9 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 Perg 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 Perg water?
12.9 gpg, equal to 12.4 °dH, 22.1 °fH or 221 mg/L calcium carbonate.
What dishwasher salt setting should I use in Perg?
For 221 mg/L (12.4 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Perg?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Wasserverband Gruppenwasserversorgung Perg und Umgebung, Trinkwasseruntersuchung HB Perg (2025-01). Method: own measurement. Wasserverband Gruppenwasserversorgung Perg und Umgebung, Trinkwasseruntersuchung HB Perg · Outdated figure? Tell us