How hard is the water in Zwölfaxing?

EVN Wasser GesmbH publishes a total hardness of 10.8 °dH for the supply zone 2322, Zwoelfaxing (hardness range medium). The hardness range is a classification under the German Detergents and Cleaning Products Act (soft below 8,4 °dH, medium 8,4 to 14 °dH, hard above that) and not a quality verdict — it indicates how much calcium and magnesium is dissolved in the water. Basis: 2026-01-27, retrieved on 08/07/2026.

How much nitrate is in the drinking water in Zwölfaxing?

EVN Wasser GesmbH publishes a nitrate value of 8,3 mg/l for the supply zone 2322, Zwoelfaxing. The statutory parametric value is 50 mg/l; the measured value represents 17 % of the parametric value. Basis: 2026-01-27, retrieved on 08/07/2026.

Who supplies the drinking water in Zwölfaxing?

EVN Wasser GesmbH. The values shown here come from the supply zone 2322, Zwoelfaxing and apply to the water the supplier delivers. What happens between the building connection and the tap — in old lead pipes, for example — is not covered by these analyses; information on that is provided by owners, the health authority or an examination by an accredited laboratory.

Drinking water in Zwölfaxing

One supply zone, water supplier: EVN Wasser GesmbH.

How to read the share of the parametric value

12 % Share of the parametric value. The proportion of the permitted maximum that the measured value uses — here 12 %, so just over an eighth.

< 10 % * Below the limit of quantification. The substance was not detectable. The mark shows where the detection limit lies relative to the parametric value — the actual share of the parametric value is below that.

Several samples per year: for chemical parameters the mean value is given, for microbiological ones the highest measured value. There the parametric value is zero — a single finding would disappear in the average, and it is precisely that finding which is the information. Which reference applies is stated in the last column of the table.

2322, Zwoelfaxing

EVN Wasser GesmbH

Water hardness

10.8 °dH

Hardness range medium

Key values 2322, Zwoelfaxing
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8,3 mg/l	50 mg/l	17 %	Single value · 2322, Zwoelfaxing
Sulphate	42 mg/l	250 mg/l	17 %	Single value · 2322, Zwoelfaxing
Sodium	5,7 mg/l	200 mg/l	3 %	Single value · 2322, Zwoelfaxing

Show all recorded parameters (11 — most recent value per parameter)

Chemical parameters (2)

Chemical parameters – 2322, Zwoelfaxing
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8,3 mg/l	50 mg/l	17 %	Single value · 2322, Zwoelfaxing
Pesticides	< 0,1 µg/l below limit of quantification	0.1 µg/l	cannot be assessed — the limit of quantification of the measurement is above the parametric value	Single value · 2322, Zwoelfaxing

Indicator parameters (4)

Indicator parameters – 2322, Zwoelfaxing
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	12 mg/l	200 mg/l	6 %	Single value · 2322, Zwoelfaxing
pH	7,7	6,5–9,5	—	Single value · 2322, Zwoelfaxing
Sodium	5,7 mg/l	200 mg/l	3 %	Single value · 2322, Zwoelfaxing
Sulphate	42 mg/l	250 mg/l	17 %	Single value · 2322, Zwoelfaxing

Further parameters (5)

Further parameters – 2322, Zwoelfaxing
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	52,4 mg/l	400 mg/l	13 %	Single value · 2322, Zwoelfaxing
Carbonate hardness	8 °dH	—	—	Single value · 2322, Zwoelfaxing
Magnesium	15 mg/l	150 mg/l	10 %	Single value · 2322, Zwoelfaxing
Potassium	1 mg/l	50 mg/l	2 %	Single value · 2322, Zwoelfaxing
Total hardness	10,8 °dH	—	—	Single value · 2322, Zwoelfaxing

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Source: https://www.evn.at/home/wasser/wasserwerte · 2026-01-27 · 2026-01-27 · retrieved on 08/07/2026

Postcodes in this zone: 2322

Frequently asked questions about drinking water in Zwölfaxing

How hard is the water in Zwölfaxing?: EVN Wasser GesmbH publishes a total hardness of 10.8 °dH for the supply zone 2322, Zwoelfaxing (hardness range medium). The hardness range is a classification under the German Detergents and Cleaning Products Act (soft below 8,4 °dH, medium 8,4 to 14 °dH, hard above that) and not a quality verdict — it indicates how much calcium and magnesium is dissolved in the water. Basis: 2026-01-27, retrieved on 08/07/2026.
How much nitrate is in the drinking water in Zwölfaxing?: EVN Wasser GesmbH publishes a nitrate value of 8,3 mg/l for the supply zone 2322, Zwoelfaxing. The statutory parametric value is 50 mg/l; the measured value represents 17 % of the parametric value. Basis: 2026-01-27, retrieved on 08/07/2026.
Who supplies the drinking water in Zwölfaxing?: EVN Wasser GesmbH. The values shown here come from the supply zone 2322, Zwoelfaxing and apply to the water the supplier delivers. What happens between the building connection and the tap — in old lead pipes, for example — is not covered by these analyses; information on that is provided by owners, the health authority or an examination by an accredited laboratory.

General questions — how current the data is, limit of quantification, parametric values, who is behind this site — are answered under Questions & answers.