How hard is the water in Postcode 91180?

Wasserversorgungen Heideck, Liebenstadt und Zweckverband zur Wasserversorgung der Laibstadt-Schloßberg-Gruppe publishes a total hardness of 5.7 °dH for the supply zone Heideck (hardness range weich). 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 91180?

Wasserversorgungen Heideck, Liebenstadt und Zweckverband zur Wasserversorgung der Laibstadt-Schloßberg-Gruppe publishes a nitrate value of 20,0 mg/l for the supply zone Heideck. The statutory parametric value is 50 mg/l; the measured value represents 40 % of the parametric value. Basis: Publication by the water supplier, retrieved on 13/07/2026.

Who supplies the drinking water in Postcode 91180?

Wasserversorgungen Heideck, Liebenstadt und Zweckverband zur Wasserversorgung der Laibstadt-Schloßberg-Gruppe. The values shown here come from the supply zone Heideck 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 91180

One supply zone, water supplier: Wasserversorgungen Heideck, Liebenstadt und Zweckverband zur Wasserversorgung der Laibstadt-Schloßberg-Gruppe.

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.

Heideck

Wasserversorgungen Heideck, Liebenstadt und Zweckverband zur Wasserversorgung der Laibstadt-Schloßberg-Gruppe

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

Water hardness

5.7 °dH

Hardness range weich

Key values Heideck
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	20,0 mg/l	50 mg/l	40 %	Single value · Heideck
Sodium	5,8 mg/l	200 mg/l	3 %	Single value · Heideck

Show all recorded parameters (10 — most recent value per parameter)

Chemical parameters (3)

Chemical parameters – Heideck
Parameter	Value	Parametric value	Share of the parametric value	Reference
Arsenic	0,002 mg/l	10 µg/l	20 %	Single value · Heideck
Nitrate	20,0 mg/l	50 mg/l	40 %	Single value · Heideck
Uranium	<0,0001 mg/l below limit of quantification	10 µg/l	< 1 % *	Single value · Heideck

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Indicator parameters (2)

Indicator parameters – Heideck
Parameter	Value	Parametric value	Share of the parametric value	Reference
pH	8,64	6,5–9,5	—	Single value · Heideck
Sodium	5,8 mg/l	200 mg/l	3 %	Single value · Heideck

Further parameters (5)

Further parameters – Heideck
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	29,3 mg/l	—	—	Single value · Heideck
Hardness range (WRMG)	weich	—	—	Single value · Heideck
Magnesium	6,7 mg/l	—	—	Single value · Heideck
Potassium	5,0 mg/l	—	—	Single value · Heideck
Total hardness	5,7 °dH	—	—	Single value · Heideck

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.heideck.de/pdf/leben/auszug-aus-der-wasseranalyse-wasserhaerte-von-2025.pdf · 2025 · retrieved on 13/07/2026

Frequent questions about postcode 91180

How hard is the water in Postcode 91180?: Wasserversorgungen Heideck, Liebenstadt und Zweckverband zur Wasserversorgung der Laibstadt-Schloßberg-Gruppe publishes a total hardness of 5.7 °dH for the supply zone Heideck (hardness range weich). 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 91180?: Wasserversorgungen Heideck, Liebenstadt und Zweckverband zur Wasserversorgung der Laibstadt-Schloßberg-Gruppe publishes a nitrate value of 20,0 mg/l for the supply zone Heideck. The statutory parametric value is 50 mg/l; the measured value represents 40 % of the parametric value. Basis: Publication by the water supplier, retrieved on 13/07/2026.
Who supplies the drinking water in Postcode 91180?: Wasserversorgungen Heideck, Liebenstadt und Zweckverband zur Wasserversorgung der Laibstadt-Schloßberg-Gruppe. The values shown here come from the supply zone Heideck 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.