How hard is the water in Grosshöchstetten?

EVN Wasser GesmbH publishes a total hardness of 11.6 °dH for the supply zone 3506, Hollenburg (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: 2026-01-28, retrieved on 08/07/2026.

How much nitrate is in the drinking water in Grosshöchstetten?

EVN Wasser GesmbH publishes a nitrate value of 5,5 mg/l for the supply zone 3506, Hollenburg. The statutory parametric value is 50 mg/l; the measured value represents 11 % of the parametric value. Basis: 2026-01-28, retrieved on 08/07/2026.

Who supplies the drinking water in Grosshöchstetten?

EVN Wasser GesmbH. The values shown here come from the supply zone 3506, Hollenburg 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 Grosshöchstetten

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.

3506, Hollenburg

EVN Wasser GesmbH

Water hardness

11.6 °dH

Hardness range medium

Key values 3506, Hollenburg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	5,5 mg/l	50 mg/l	11 %	Single value · 3506, Hollenburg
Sulphate	27 mg/l	250 mg/l	11 %	Single value · 3506, Hollenburg
Sodium	12 mg/l	200 mg/l	6 %	Single value · 3506, Hollenburg

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

Chemical parameters (2)

Chemical parameters – 3506, Hollenburg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	5,5 mg/l	50 mg/l	11 %	Single value · 3506, Hollenburg
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 · 3506, Hollenburg

Indicator parameters (4)

Indicator parameters – 3506, Hollenburg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	16 mg/l	200 mg/l	8 %	Single value · 3506, Hollenburg
pH	7,8	6,5–9,5	—	Single value · 3506, Hollenburg
Sodium	12 mg/l	200 mg/l	6 %	Single value · 3506, Hollenburg
Sulphate	27 mg/l	250 mg/l	11 %	Single value · 3506, Hollenburg

Further parameters (5)

Further parameters – 3506, Hollenburg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	60 mg/l	400 mg/l	15 %	Single value · 3506, Hollenburg
Carbonate hardness	10 °dH	—	—	Single value · 3506, Hollenburg
Magnesium	14 mg/l	150 mg/l	9 %	Single value · 3506, Hollenburg
Potassium	2,5 mg/l	50 mg/l	5 %	Single value · 3506, Hollenburg
Total hardness	11,6 °dH	—	—	Single value · 3506, Hollenburg

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 · 2026-01-28 · 2026-01-28 · retrieved on 08/07/2026

Postcodes in this zone: 3506

Frequently asked questions about drinking water in Grosshöchstetten

How hard is the water in Grosshöchstetten?: EVN Wasser GesmbH publishes a total hardness of 11.6 °dH for the supply zone 3506, Hollenburg (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: 2026-01-28, retrieved on 08/07/2026.
How much nitrate is in the drinking water in Grosshöchstetten?: EVN Wasser GesmbH publishes a nitrate value of 5,5 mg/l for the supply zone 3506, Hollenburg. The statutory parametric value is 50 mg/l; the measured value represents 11 % of the parametric value. Basis: 2026-01-28, retrieved on 08/07/2026.
Who supplies the drinking water in Grosshöchstetten?: EVN Wasser GesmbH. The values shown here come from the supply zone 3506, Hollenburg 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.