How hard is the water in Postcode 78662?

Zweckverband Heimbach Wasserversorgungsgruppe (Dornhan) publishes a total hardness of 11.9 °dH for the supply zone Wasserwerk Brandeck / Zweckverband Heimbach Wasserversorgungsgruppe (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: Publication by the water supplier, retrieved on 13/07/2026.

How much nitrate is in the drinking water in Postcode 78662?

Zweckverband Heimbach Wasserversorgungsgruppe (Dornhan) publishes a nitrate value of 17,0 mg/l for the supply zone Wasserwerk Brandeck / Zweckverband Heimbach Wasserversorgungsgruppe. The statutory parametric value is 50 mg/l; the measured value represents 34 % of the parametric value. Basis: Publication by the water supplier, retrieved on 13/07/2026.

Who supplies the drinking water in Postcode 78662?

Zweckverband Heimbach Wasserversorgungsgruppe (Dornhan). The values shown here come from the supply zone Wasserwerk Brandeck / Zweckverband Heimbach Wasserversorgungsgruppe 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 78662

One supply zone, water supplier: Zweckverband Heimbach Wasserversorgungsgruppe (Dornhan).

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.

Wasserwerk Brandeck / Zweckverband Heimbach Wasserversorgungsgruppe

Zweckverband Heimbach Wasserversorgungsgruppe (Dornhan)

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 21/08/2014. 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

11.9 °dH

Hardness range medium

Key values Wasserwerk Brandeck / Zweckverband Heimbach Wasserversorgungsgruppe
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	17,0 mg/l	50 mg/l	34 %	Single value · 21.08.2014 nach Inbetriebnahme der Wasserenthärtungsanlage
Sulphate	34,0 mg/l	250 mg/l	14 %	Single value · 21.08.2014 nach Inbetriebnahme der Wasserenthärtungsanlage

Show all recorded parameters (6 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Wasserwerk Brandeck / Zweckverband Heimbach Wasserversorgungsgruppe
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	17,0 mg/l	50 mg/l	34 %	Single value · 21.08.2014 nach Inbetriebnahme der Wasserenthärtungsanlage

Indicator parameters (1)

Indicator parameters – Wasserwerk Brandeck / Zweckverband Heimbach Wasserversorgungsgruppe
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sulphate	34,0 mg/l	250 mg/l	14 %	Single value · 21.08.2014 nach Inbetriebnahme der Wasserenthärtungsanlage

Further parameters (4)

Further parameters – Wasserwerk Brandeck / Zweckverband Heimbach Wasserversorgungsgruppe
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	65,1 mg/l	—	—	Single value · 21.08.2014 nach Inbetriebnahme der Wasserenthärtungsanlage
Hydrogen carbonate	184,0 mg/l	—	—	Single value · 21.08.2014 nach Inbetriebnahme der Wasserenthärtungsanlage
Magnesium	11,8 mg/l	—	—	Single value · 21.08.2014 nach Inbetriebnahme der Wasserenthärtungsanlage
Total hardness	11,9 °dH	—	—	Single value · 21.08.2014 nach Inbetriebnahme der Wasserenthärtungsanlage

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.dornhan.de/wasserversorgung/ueber-uns/aktuell · 17.03.2014 (vor Inbetriebnahme) und 21.08.2014 (nach Inbetriebnahme der Wasserenthärtungsanlage) · retrieved on 13/07/2026

Frequent questions about postcode 78662

How hard is the water in Postcode 78662?: Zweckverband Heimbach Wasserversorgungsgruppe (Dornhan) publishes a total hardness of 11.9 °dH for the supply zone Wasserwerk Brandeck / Zweckverband Heimbach Wasserversorgungsgruppe (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: Publication by the water supplier, retrieved on 13/07/2026.
How much nitrate is in the drinking water in Postcode 78662?: Zweckverband Heimbach Wasserversorgungsgruppe (Dornhan) publishes a nitrate value of 17,0 mg/l for the supply zone Wasserwerk Brandeck / Zweckverband Heimbach Wasserversorgungsgruppe. The statutory parametric value is 50 mg/l; the measured value represents 34 % of the parametric value. Basis: Publication by the water supplier, retrieved on 13/07/2026.
Who supplies the drinking water in Postcode 78662?: Zweckverband Heimbach Wasserversorgungsgruppe (Dornhan). The values shown here come from the supply zone Wasserwerk Brandeck / Zweckverband Heimbach Wasserversorgungsgruppe 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.