How hard is the water in Zwettl-Niederösterreich?

EVN Wasser GesmbH publishes a total hardness of 6.3 °dH for the supply zone 3533, Anschlussobjekt AS Waldland (hardness range soft). 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: 2025-02-19, retrieved on 08/07/2026.

How much nitrate is in the drinking water in Zwettl-Niederösterreich?

EVN Wasser GesmbH publishes a nitrate value of 4,7 mg/l for the supply zone 3533, Anschlussobjekt AS Waldland. The statutory parametric value is 50 mg/l; the measured value represents 9 % of the parametric value. Basis: 2025-02-19, retrieved on 08/07/2026.

Who supplies the drinking water in Zwettl-Niederösterreich?

EVN Wasser GesmbH. The values shown here come from the supply zone 3533, Anschlussobjekt AS Waldland 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 Zwettl-Niederösterreich

12 supply zones — values can differ depending on the district. Below is the zone with the most documented parameters, the others collapsed underneath. To determine the exact match, look up the postcode.

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.

3533, Anschlussobjekt AS Waldland

EVN Wasser GesmbH

These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 19/02/2025. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.

Water hardness

6.3 °dH

Hardness range soft

Key values 3533, Anschlussobjekt AS Waldland
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3533, Anschlussobjekt AS Waldland
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3533, Anschlussobjekt AS Waldland
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3533, Anschlussobjekt AS Waldland

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

Chemical parameters (2)

Chemical parameters – 3533, Anschlussobjekt AS Waldland
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3533, Anschlussobjekt AS Waldland
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 · 3533, Anschlussobjekt AS Waldland

Indicator parameters (4)

Indicator parameters – 3533, Anschlussobjekt AS Waldland
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3533, Anschlussobjekt AS Waldland
pH	7	6,5–9,5	—	Single value · 3533, Anschlussobjekt AS Waldland
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3533, Anschlussobjekt AS Waldland
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3533, Anschlussobjekt AS Waldland

Further parameters (5)

Further parameters – 3533, Anschlussobjekt AS Waldland
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3533, Anschlussobjekt AS Waldland
Carbonate hardness	2,9 °dH	—	—	Single value · 3533, Anschlussobjekt AS Waldland
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3533, Anschlussobjekt AS Waldland
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3533, Anschlussobjekt AS Waldland
Total hardness	6,3 °dH	—	—	Single value · 3533, Anschlussobjekt AS Waldland

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 · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3533

Show 11 more supply zones

3910, Großglobnitz

EVN Wasser GesmbH

Water hardness

6.3 °dH

Hardness range soft

Key values 3910, Großglobnitz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Großglobnitz
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Großglobnitz
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Großglobnitz

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

Chemical parameters (2)

Chemical parameters – 3910, Großglobnitz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Großglobnitz
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 · 3910, Großglobnitz

Indicator parameters (4)

Indicator parameters – 3910, Großglobnitz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3910, Großglobnitz
pH	7	6,5–9,5	—	Single value · 3910, Großglobnitz
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Großglobnitz
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Großglobnitz

Further parameters (5)

Further parameters – 3910, Großglobnitz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3910, Großglobnitz
Carbonate hardness	2,9 °dH	—	—	Single value · 3910, Großglobnitz
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3910, Großglobnitz
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3910, Großglobnitz
Total hardness	6,3 °dH	—	—	Single value · 3910, Großglobnitz

Source: https://www.evn.at/home/wasser/wasserwerte · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3910

3910, Großhaslau

EVN Wasser GesmbH

Water hardness

6.3 °dH

Hardness range soft

Key values 3910, Großhaslau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Großhaslau
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Großhaslau
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Großhaslau

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

Chemical parameters (2)

Chemical parameters – 3910, Großhaslau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Großhaslau
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 · 3910, Großhaslau

Indicator parameters (4)

Indicator parameters – 3910, Großhaslau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3910, Großhaslau
pH	7	6,5–9,5	—	Single value · 3910, Großhaslau
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Großhaslau
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Großhaslau

Further parameters (5)

Further parameters – 3910, Großhaslau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3910, Großhaslau
Carbonate hardness	2,9 °dH	—	—	Single value · 3910, Großhaslau
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3910, Großhaslau
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3910, Großhaslau
Total hardness	6,3 °dH	—	—	Single value · 3910, Großhaslau

Source: https://www.evn.at/home/wasser/wasserwerte · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3910

3910, Kleinschönau

EVN Wasser GesmbH

Water hardness

6.3 °dH

Hardness range soft

Key values 3910, Kleinschönau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Kleinschönau
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Kleinschönau
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Kleinschönau

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

Chemical parameters (2)

Chemical parameters – 3910, Kleinschönau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Kleinschönau
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 · 3910, Kleinschönau

Indicator parameters (4)

Indicator parameters – 3910, Kleinschönau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3910, Kleinschönau
pH	7	6,5–9,5	—	Single value · 3910, Kleinschönau
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Kleinschönau
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Kleinschönau

Further parameters (5)

Further parameters – 3910, Kleinschönau
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3910, Kleinschönau
Carbonate hardness	2,9 °dH	—	—	Single value · 3910, Kleinschönau
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3910, Kleinschönau
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3910, Kleinschönau
Total hardness	6,3 °dH	—	—	Single value · 3910, Kleinschönau

Source: https://www.evn.at/home/wasser/wasserwerte · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3910

3910, Moidrams

EVN Wasser GesmbH

Water hardness

6.3 °dH

Hardness range soft

Key values 3910, Moidrams
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Moidrams
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Moidrams
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Moidrams

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

Chemical parameters (2)

Chemical parameters – 3910, Moidrams
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Moidrams
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 · 3910, Moidrams

Indicator parameters (4)

Indicator parameters – 3910, Moidrams
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3910, Moidrams
pH	7	6,5–9,5	—	Single value · 3910, Moidrams
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Moidrams
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Moidrams

Further parameters (5)

Further parameters – 3910, Moidrams
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3910, Moidrams
Carbonate hardness	2,9 °dH	—	—	Single value · 3910, Moidrams
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3910, Moidrams
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3910, Moidrams
Total hardness	6,3 °dH	—	—	Single value · 3910, Moidrams

Source: https://www.evn.at/home/wasser/wasserwerte · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3910

3910, Niederstrahlbach

EVN Wasser GesmbH

Water hardness

6.3 °dH

Hardness range soft

Key values 3910, Niederstrahlbach
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Niederstrahlbach
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Niederstrahlbach
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Niederstrahlbach

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

Chemical parameters (2)

Chemical parameters – 3910, Niederstrahlbach
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Niederstrahlbach
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 · 3910, Niederstrahlbach

Indicator parameters (4)

Indicator parameters – 3910, Niederstrahlbach
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3910, Niederstrahlbach
pH	7	6,5–9,5	—	Single value · 3910, Niederstrahlbach
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Niederstrahlbach
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Niederstrahlbach

Further parameters (5)

Further parameters – 3910, Niederstrahlbach
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3910, Niederstrahlbach
Carbonate hardness	2,9 °dH	—	—	Single value · 3910, Niederstrahlbach
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3910, Niederstrahlbach
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3910, Niederstrahlbach
Total hardness	6,3 °dH	—	—	Single value · 3910, Niederstrahlbach

Source: https://www.evn.at/home/wasser/wasserwerte · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3910

3910, Oberstrahlbach I

EVN Wasser GesmbH

Water hardness

6.3 °dH

Hardness range soft

Key values 3910, Oberstrahlbach I
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Oberstrahlbach I
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Oberstrahlbach I
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Oberstrahlbach I

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

Chemical parameters (2)

Chemical parameters – 3910, Oberstrahlbach I
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Oberstrahlbach I
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 · 3910, Oberstrahlbach I

Indicator parameters (4)

Indicator parameters – 3910, Oberstrahlbach I
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3910, Oberstrahlbach I
pH	7	6,5–9,5	—	Single value · 3910, Oberstrahlbach I
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Oberstrahlbach I
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Oberstrahlbach I

Further parameters (5)

Further parameters – 3910, Oberstrahlbach I
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3910, Oberstrahlbach I
Carbonate hardness	2,9 °dH	—	—	Single value · 3910, Oberstrahlbach I
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3910, Oberstrahlbach I
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3910, Oberstrahlbach I
Total hardness	6,3 °dH	—	—	Single value · 3910, Oberstrahlbach I

Source: https://www.evn.at/home/wasser/wasserwerte · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3910

3910, Oberstrahlbach II

EVN Wasser GesmbH

Water hardness

6.3 °dH

Hardness range soft

Key values 3910, Oberstrahlbach II
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Oberstrahlbach II
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Oberstrahlbach II
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Oberstrahlbach II

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

Chemical parameters (2)

Chemical parameters – 3910, Oberstrahlbach II
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Oberstrahlbach II
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 · 3910, Oberstrahlbach II

Indicator parameters (4)

Indicator parameters – 3910, Oberstrahlbach II
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3910, Oberstrahlbach II
pH	7	6,5–9,5	—	Single value · 3910, Oberstrahlbach II
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Oberstrahlbach II
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Oberstrahlbach II

Further parameters (5)

Further parameters – 3910, Oberstrahlbach II
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3910, Oberstrahlbach II
Carbonate hardness	2,9 °dH	—	—	Single value · 3910, Oberstrahlbach II
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3910, Oberstrahlbach II
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3910, Oberstrahlbach II
Total hardness	6,3 °dH	—	—	Single value · 3910, Oberstrahlbach II

Source: https://www.evn.at/home/wasser/wasserwerte · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3910

3910, Rudmanns

EVN Wasser GesmbH

Water hardness

6.3 °dH

Hardness range soft

Key values 3910, Rudmanns
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Rudmanns
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Rudmanns
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Rudmanns

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

Chemical parameters (2)

Chemical parameters – 3910, Rudmanns
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Rudmanns
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 · 3910, Rudmanns

Indicator parameters (4)

Indicator parameters – 3910, Rudmanns
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3910, Rudmanns
pH	7	6,5–9,5	—	Single value · 3910, Rudmanns
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Rudmanns
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Rudmanns

Further parameters (5)

Further parameters – 3910, Rudmanns
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3910, Rudmanns
Carbonate hardness	2,9 °dH	—	—	Single value · 3910, Rudmanns
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3910, Rudmanns
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3910, Rudmanns
Total hardness	6,3 °dH	—	—	Single value · 3910, Rudmanns

Source: https://www.evn.at/home/wasser/wasserwerte · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3910

3910, WG Gradnitz

EVN Wasser GesmbH

Water hardness

6.3 °dH

Hardness range soft

Key values 3910, WG Gradnitz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, WG Gradnitz
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, WG Gradnitz
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, WG Gradnitz

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

Chemical parameters (2)

Chemical parameters – 3910, WG Gradnitz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, WG Gradnitz
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 · 3910, WG Gradnitz

Indicator parameters (4)

Indicator parameters – 3910, WG Gradnitz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3910, WG Gradnitz
pH	7	6,5–9,5	—	Single value · 3910, WG Gradnitz
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, WG Gradnitz
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, WG Gradnitz

Further parameters (5)

Further parameters – 3910, WG Gradnitz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3910, WG Gradnitz
Carbonate hardness	2,9 °dH	—	—	Single value · 3910, WG Gradnitz
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3910, WG Gradnitz
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3910, WG Gradnitz
Total hardness	6,3 °dH	—	—	Single value · 3910, WG Gradnitz

Source: https://www.evn.at/home/wasser/wasserwerte · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3910

3910, WG Jahrings

EVN Wasser GesmbH

Water hardness

6.3 °dH

Hardness range soft

Key values 3910, WG Jahrings
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, WG Jahrings
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, WG Jahrings
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, WG Jahrings

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

Chemical parameters (2)

Chemical parameters – 3910, WG Jahrings
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, WG Jahrings
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 · 3910, WG Jahrings

Indicator parameters (4)

Indicator parameters – 3910, WG Jahrings
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3910, WG Jahrings
pH	7	6,5–9,5	—	Single value · 3910, WG Jahrings
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, WG Jahrings
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, WG Jahrings

Further parameters (5)

Further parameters – 3910, WG Jahrings
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3910, WG Jahrings
Carbonate hardness	2,9 °dH	—	—	Single value · 3910, WG Jahrings
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3910, WG Jahrings
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3910, WG Jahrings
Total hardness	6,3 °dH	—	—	Single value · 3910, WG Jahrings

Source: https://www.evn.at/home/wasser/wasserwerte · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3910

3910, Zwettl

EVN Wasser GesmbH

Water hardness

6.3 °dH

Hardness range soft

Key values 3910, Zwettl
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Zwettl
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Zwettl
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Zwettl

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

Chemical parameters (2)

Chemical parameters – 3910, Zwettl
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,7 mg/l	50 mg/l	9 %	Single value · 3910, Zwettl
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 · 3910, Zwettl

Indicator parameters (4)

Indicator parameters – 3910, Zwettl
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	47 mg/l	200 mg/l	24 %	Single value · 3910, Zwettl
pH	7	6,5–9,5	—	Single value · 3910, Zwettl
Sodium	11 mg/l	200 mg/l	5 %	Single value · 3910, Zwettl
Sulphate	16 mg/l	250 mg/l	6 %	Single value · 3910, Zwettl

Further parameters (5)

Further parameters – 3910, Zwettl
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	40 mg/l	400 mg/l	10 %	Single value · 3910, Zwettl
Carbonate hardness	2,9 °dH	—	—	Single value · 3910, Zwettl
Magnesium	2,9 mg/l	150 mg/l	2 %	Single value · 3910, Zwettl
Potassium	1,8 mg/l	50 mg/l	4 %	Single value · 3910, Zwettl
Total hardness	6,3 °dH	—	—	Single value · 3910, Zwettl

Source: https://www.evn.at/home/wasser/wasserwerte · 2025-02-19 · 2025-02-19 · retrieved on 08/07/2026

Postcodes in this zone: 3910

Frequently asked questions about drinking water in Zwettl-Niederösterreich

How hard is the water in Zwettl-Niederösterreich?: EVN Wasser GesmbH publishes a total hardness of 6.3 °dH for the supply zone 3533, Anschlussobjekt AS Waldland (hardness range soft). 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: 2025-02-19, retrieved on 08/07/2026.
How much nitrate is in the drinking water in Zwettl-Niederösterreich?: EVN Wasser GesmbH publishes a nitrate value of 4,7 mg/l for the supply zone 3533, Anschlussobjekt AS Waldland. The statutory parametric value is 50 mg/l; the measured value represents 9 % of the parametric value. Basis: 2025-02-19, retrieved on 08/07/2026.
Who supplies the drinking water in Zwettl-Niederösterreich?: EVN Wasser GesmbH. The values shown here come from the supply zone 3533, Anschlussobjekt AS Waldland 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.