Water hardness in Weiz
13.6 °dH very hard
Tap water in Weiz is very hard: 13.6 °dH (243 mg/L · 14.2 gpg · 24.3 °fH).
Source: Stadtgemeinde Weiz, Daten und Fakten (Trinkwasser) (2026) · data checked 2026-10-20
Range across supply zones: 187–286 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| citywide | 11.2 | 201 | very hard |
| Weizberg-Thannhausen-Raas | 16 | 286 | very hard |
The town of Weiz publishes two hardness figures for its drinking water, giving a midpoint of 243.2 mg/L CaCO₃. The range is 187.4 to 285.6 mg/L, so depending on the supply area the water is hard to very hard. The page is dated only as 2026, and it does not say which district gets which value. Ask the Wirtschaftshof for your address before sizing a softener.
Angabe in °dH; Härtebereiche wie in Deutschland üblich.
Water data
| Total hardness | 13.6 °dH |
|---|---|
| Utility | Stadtgemeinde Weiz (Wirtschaftshof, Wasserwerk Weiz) |
How Weiz compares
- Tap water in Weiz is close to the median of the 159 cities we track in Austria (14 °dH).
- By hardness it ranks 81 of 159 in Austria (1 = hardest); 49 % of these cities have softer water.
- In Steiermark it is number 4 of 8 cities; the regional median is 13.6 °dH.
- Nearest city with clearly softer water: Riedlingsdorf, 42 km away (4.4 °dH).
- Nearest city with clearly harder water: Seiersberg-Pirka, 29 km away (19.4 °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 Weiz
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 14 °dH |
| AEG / Electrolux | 3 |
| Beko | 4th |
| 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 Weiz water hard or soft?
It is very hard: 243 mg/L as CaCO₃ (14.2 gpg, 13.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Weiz 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 Weiz water?
14.2 gpg, equal to 13.6 °dH, 24.3 °fH or 243 mg/L calcium carbonate.
What dishwasher salt setting should I use in Weiz?
For 243 mg/L (13.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Weiz?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtgemeinde Weiz, Daten und Fakten (Trinkwasser) (2026). Method: figure published by the water supplier. Stadtgemeinde Weiz, Daten und Fakten (Trinkwasser) · Outdated figure? Tell us