How hard is the water in Holzhausen?

Gemeinde Holzhausen publishes a total hardness of 20.5 °dH for the supply zone 4615, Netzauslauf Zentrum (hardness range hard). 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: 2022-04-11, retrieved on 08/08/2026.

How much nitrate is in the drinking water in Holzhausen?

Gemeinde Holzhausen publishes a nitrate value of 12,2 mg/l for the supply zone 4615, Netzauslauf Zentrum. The statutory parametric value is 50 mg/l; the measured value represents 24 % of the parametric value. Basis: 2022-04-11, retrieved on 08/08/2026.

Who supplies the drinking water in Holzhausen?

Gemeinde Holzhausen. The values shown here come from the supply zone 4615, Netzauslauf Zentrum 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 Holzhausen

One supply zone, water supplier: Gemeinde Holzhausen.

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.

4615, Netzauslauf Zentrum

Gemeinde Holzhausen

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 11/04/2022. 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

20.5 °dH

Hardness range hard

Key values 4615, Netzauslauf Zentrum
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	12,2 mg/l	50 mg/l	24 %	Single value · 4615, Netzauslauf Zentrum
Sulphate	40,6 mg/l	250 mg/l	16 %	Single value · 4615, Netzauslauf Zentrum
Sodium	9,4 mg/l	200 mg/l	5 %	Single value · 4615, Netzauslauf Zentrum

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

Chemical parameters (1)

Chemical parameters – 4615, Netzauslauf Zentrum
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	12,2 mg/l	50 mg/l	24 %	Single value · 4615, Netzauslauf Zentrum

Indicator parameters (5)

Indicator parameters – 4615, Netzauslauf Zentrum
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	20,6 mg/l	200 mg/l	10 %	Single value · 4615, Netzauslauf Zentrum
Conductivity (25 °C)	624 µS/cm	2,500 µS/cm	—	Single value · 4615, Netzauslauf Zentrum
pH	7,2	6,5–9,5	—	Single value · 4615, Netzauslauf Zentrum
Sodium	9,4 mg/l	200 mg/l	5 %	Single value · 4615, Netzauslauf Zentrum
Sulphate	40,6 mg/l	250 mg/l	16 %	Single value · 4615, Netzauslauf Zentrum

Further parameters (5)

Further parameters – 4615, Netzauslauf Zentrum
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	104,7 mg/l	400 mg/l	26 %	Single value · 4615, Netzauslauf Zentrum
Carbonate hardness	16,8 °dH	—	—	Single value · 4615, Netzauslauf Zentrum
Magnesium	25,5 mg/l	150 mg/l	17 %	Single value · 4615, Netzauslauf Zentrum
Potassium	0,9 mg/l	50 mg/l	2 %	Single value · 4615, Netzauslauf Zentrum
Total hardness	20,5 °dH	—	—	Single value · 4615, Netzauslauf Zentrum

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.trinkwasserinfo.at/datenbank?no_cache=1&tx_abatrinkwdb_pi1_anlagenid=18091004&tx_abatrinkwdb_pi1_plz=4615&tx_abatrinkwdb_pi1_suche=1&cHash=bd44a244c594f7be64b1b55bbfaee202 · 2022-04-11 · 2022-04-11 · retrieved on 08/08/2026

Postcodes in this zone: 4615

Frequently asked questions about drinking water in Holzhausen

How hard is the water in Holzhausen?: Gemeinde Holzhausen publishes a total hardness of 20.5 °dH for the supply zone 4615, Netzauslauf Zentrum (hardness range hard). 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: 2022-04-11, retrieved on 08/08/2026.
How much nitrate is in the drinking water in Holzhausen?: Gemeinde Holzhausen publishes a nitrate value of 12,2 mg/l for the supply zone 4615, Netzauslauf Zentrum. The statutory parametric value is 50 mg/l; the measured value represents 24 % of the parametric value. Basis: 2022-04-11, retrieved on 08/08/2026.
Who supplies the drinking water in Holzhausen?: Gemeinde Holzhausen. The values shown here come from the supply zone 4615, Netzauslauf Zentrum 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.