How hard is the water in Postcode 66802?

Kommunale Dienste Überherrn (KDÜ) publishes the hardness range weich (7,0 °dH) for the supply zone ueberherrn gesamt. 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 11/07/2026.

How much nitrate is in the drinking water in Postcode 66802?

Kommunale Dienste Überherrn (KDÜ) publishes a nitrate value of 31,50 mg/l for the supply zone ueberherrn gesamt. The statutory parametric value is 50 mg/l; the measured value represents 63 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.

Who supplies the drinking water in Postcode 66802?

Kommunale Dienste Überherrn (KDÜ). The values shown here come from the supply zone ueberherrn gesamt 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 66802

One supply zone, water supplier: Kommunale Dienste Überherrn (KDÜ).

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.

ueberherrn gesamt

Kommunale Dienste Überherrn (KDÜ)

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

Water hardness

Hardness range weich (7,0 °dH)

Key values ueberherrn gesamt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	31,50 mg/l	50 mg/l	63 %	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Sulphate	21,40 mg/l	250 mg/l	9 %	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Sodium	5,50 mg/l	200 mg/l	3 %	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg

Show all recorded parameters (26 — most recent value per parameter)

Chemical parameters (14)

Chemical parameters – ueberherrn gesamt
Parameter	Value	Parametric value	Share of the parametric value	Reference
1,2-dichloroethane	<0,2 µg/l below limit of quantification	3 µg/l	< 7 % *	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Benzene	<0,2 µg/l below limit of quantification	1 µg/l	< 20 % *	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Boron	<0,05 mg/l below limit of quantification	1 mg/l	< 5 % *	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Bromacil	<0,02 µg/l below limit of quantification	—	—	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Chromium	<0,3 µg/l below limit of quantification	25 µg/l	< 1 % *	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Cyanide	<0,005 mg/l below limit of quantification	50 µg/l	< 10 % *	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Fluoride	0,12 mg/l	1.5 mg/l	8 %	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Mercury	<0,10 µg/l below limit of quantification	1 µg/l	< 10 % *	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Nitrate	31,50 mg/l	50 mg/l	63 %	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Nitrite	<0,005 mg/l below limit of quantification	0.5 mg/l	< 1 % *	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Selenium	<0,60 µg/l below limit of quantification	10 µg/l	< 6 % *	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Tetrachloroethene	<0,2 µg/l below limit of quantification	—	—	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Trichloroethene	<0,2 µg/l below limit of quantification	—	—	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Uranium	<0,20 µg/l below limit of quantification	10 µg/l	< 2 % *	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg

* 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 (8)

Indicator parameters – ueberherrn gesamt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	<0,010 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Chloride	13,40 mg/l	250 mg/l	5 %	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Iron	0,009 mg/l	0.2 mg/l	5 %	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Manganese	<0,002 mg/l below limit of quantification	50 µg/l	< 4 % *	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
pH	8,62 ----	6,5–9,5	—	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Sodium	5,50 mg/l	200 mg/l	3 %	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Sulphate	21,40 mg/l	250 mg/l	9 %	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Turbidity	0,65 FNU	1 NTU	—	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg

Further parameters (4)

Further parameters – ueberherrn gesamt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	27,50 mg/l	—	—	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Hardness range (WRMG)	weich (7,0 °dH)	—	—	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Magnesium	13,70 mg/l	—	—	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg
Potassium	2,30 mg/l	—	—	Single value · Okt. 2025 / Versorgungsbereich: Oberfelsberg

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.kdue.de/trinkwasseranalyse-2/ · Mai 2026 / Juni 2026 / Okt. 2025 · retrieved on 11/07/2026

Frequent questions about postcode 66802

How hard is the water in Postcode 66802?: Kommunale Dienste Überherrn (KDÜ) publishes the hardness range weich (7,0 °dH) for the supply zone ueberherrn gesamt. 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 11/07/2026.
How much nitrate is in the drinking water in Postcode 66802?: Kommunale Dienste Überherrn (KDÜ) publishes a nitrate value of 31,50 mg/l for the supply zone ueberherrn gesamt. The statutory parametric value is 50 mg/l; the measured value represents 63 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
Who supplies the drinking water in Postcode 66802?: Kommunale Dienste Überherrn (KDÜ). The values shown here come from the supply zone ueberherrn gesamt 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.