How hard is the water in Kelheim?

Stadtwerke Kelheim GmbH & Co KG publishes a total hardness of 2,6 mmol/L for the supply zone Brunnen Kelheimwinzer — that corresponds to 14.6 °dH. 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: Mai 2025, retrieved on 11/07/2026.

How much nitrate is in the drinking water in Kelheim?

Stadtwerke Kelheim GmbH & Co KG publishes a nitrate value of 9,8 mg/L for the supply zone Brunnen Kelheimwinzer. The statutory parametric value is 50 mg/l; the measured value represents 20 % of the parametric value. Basis: Mai 2025, retrieved on 11/07/2026.

Who supplies the drinking water in Kelheim?

Stadtwerke Kelheim GmbH & Co KG. The values shown here come from the supply zone Brunnen Kelheimwinzer 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 Kelheim

4 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.

Brunnen Kelheimwinzer

Stadtwerke Kelheim GmbH & Co KG

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

Water hardness

14.6 °dH

Hardness range hard

Key values Brunnen Kelheimwinzer
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	9,8 mg/L	50 mg/l	20 %	Single value · Brunnen Kelheimwinzer
Sulphate	10,0 mg/L	250 mg/l	4 %	Single value · Brunnen Kelheimwinzer
Sodium	2,3 mg/L	200 mg/l	1 %	Single value · Brunnen Kelheimwinzer

Show all recorded parameters (13 — most recent value per parameter)

Chemical parameters (2)

Chemical parameters – Brunnen Kelheimwinzer
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	9,8 mg/L	50 mg/l	20 %	Single value · Brunnen Kelheimwinzer
Uranium	0,0001 mg/L	10 µg/l	1 %	Single value · Brunnen Kelheimwinzer

Indicator parameters (5)

Indicator parameters – Brunnen Kelheimwinzer
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	6,7 mg/L	250 mg/l	3 %	Single value · Brunnen Kelheimwinzer
Conductivity (25 °C)	459 µS/cm	2,790 µS/cm	—	Single value · Brunnen Kelheimwinzer
pH	7,6 -	6,5–9,5	—	Single value · Brunnen Kelheimwinzer
Sodium	2,3 mg/L	200 mg/l	1 %	Single value · Brunnen Kelheimwinzer
Sulphate	10,0 mg/L	250 mg/l	4 %	Single value · Brunnen Kelheimwinzer

Further parameters (6)

Further parameters – Brunnen Kelheimwinzer
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	71,0 mg/L	—	—	Single value · Brunnen Kelheimwinzer
Dissolved organic carbon (DOC)	<0,5 mg/L below limit of quantification	—	—	Single value · Brunnen Kelheimwinzer
Magnesium	17,0 mg/L	—	—	Single value · Brunnen Kelheimwinzer
Oxygen	5,64 mg/L	—	—	Single value · Brunnen Kelheimwinzer
Potassium	0,77 mg/L	—	—	Single value · Brunnen Kelheimwinzer
Total hardness	2,6 mmol/L	—	—	Single value · Brunnen Kelheimwinzer

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.stadtwerke-kelheim.de/shared-files/22993399/?Trinkwasseranalyse.pdf= · Mai 2025 · retrieved on 11/07/2026

Postcodes in this zone: 93309

Show 3 more supply zones

Brunnen V

Stadtwerke Kelheim GmbH & Co KG

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

Water hardness

18.5 °dH

Hardness range hard

Key values Brunnen V
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	9,4 mg/L	50 mg/l	19 %	Single value · Brunnen V
Sulphate	16,0 mg/L	250 mg/l	6 %	Single value · Brunnen V
Sodium	8,3 mg/L	200 mg/l	4 %	Single value · Brunnen V

Show all recorded parameters (13 — most recent value per parameter)

Chemical parameters (2)

Chemical parameters – Brunnen V
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	9,4 mg/L	50 mg/l	19 %	Single value · Brunnen V
Uranium	0,0006 mg/L	10 µg/l	6 %	Single value · Brunnen V

Indicator parameters (5)

Indicator parameters – Brunnen V
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	51,0 mg/L	250 mg/l	20 %	Single value · Brunnen V
Conductivity (25 °C)	674 µS/cm	2,790 µS/cm	—	Single value · Brunnen V
pH	7,4 -	6,5–9,5	—	Single value · Brunnen V
Sodium	8,3 mg/L	200 mg/l	4 %	Single value · Brunnen V
Sulphate	16,0 mg/L	250 mg/l	6 %	Single value · Brunnen V

Further parameters (6)

Further parameters – Brunnen V
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	94,0 mg/L	—	—	Single value · Brunnen V
Dissolved organic carbon (DOC)	<0,5 mg/L below limit of quantification	—	—	Single value · Brunnen V
Magnesium	17,0 mg/L	—	—	Single value · Brunnen V
Oxygen	5,64 mg/L	—	—	Single value · Brunnen V
Potassium	1,1 mg/L	—	—	Single value · Brunnen V
Total hardness	3,3 mmol/L	—	—	Single value · Brunnen V

Source: https://www.stadtwerke-kelheim.de/shared-files/22993399/?Trinkwasseranalyse.pdf= · Mai 2025 · retrieved on 11/07/2026

Postcodes in this zone: 93309

Brunnen VII

Stadtwerke Kelheim GmbH & Co KG

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

Water hardness

15 °dH

Hardness range hard

Key values Brunnen VII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,9 mg/L	50 mg/l	10 %	Single value · Brunnen VII
Sulphate	13,0 mg/L	250 mg/l	5 %	Single value · Brunnen VII
Sodium	2,1 mg/L	200 mg/l	1 %	Single value · Brunnen VII

Show all recorded parameters (13 — most recent value per parameter)

Chemical parameters (2)

Chemical parameters – Brunnen VII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,9 mg/L	50 mg/l	10 %	Single value · Brunnen VII
Uranium	0,0004 mg/L	10 µg/l	4 %	Single value · Brunnen VII

Indicator parameters (5)

Indicator parameters – Brunnen VII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	5,1 mg/L	250 mg/l	2 %	Single value · Brunnen VII
Conductivity (25 °C)	500 µS/cm	2,790 µS/cm	—	Single value · Brunnen VII
pH	7,5 -	6,5–9,5	—	Single value · Brunnen VII
Sodium	2,1 mg/L	200 mg/l	1 %	Single value · Brunnen VII
Sulphate	13,0 mg/L	250 mg/l	5 %	Single value · Brunnen VII

Further parameters (6)

Further parameters – Brunnen VII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	83,0 mg/L	—	—	Single value · Brunnen VII
Dissolved organic carbon (DOC)	<0,5 mg/L below limit of quantification	—	—	Single value · Brunnen VII
Magnesium	16,0 mg/L	—	—	Single value · Brunnen VII
Oxygen	5,84 mg/L	—	—	Single value · Brunnen VII
Potassium	0,81 mg/L	—	—	Single value · Brunnen VII
Total hardness	2,67 mmol/L	—	—	Single value · Brunnen VII

Source: https://www.stadtwerke-kelheim.de/shared-files/22993399/?Trinkwasseranalyse.pdf= · Mai 2025 · retrieved on 11/07/2026

Postcodes in this zone: 93309

Brunnen VIII

Stadtwerke Kelheim GmbH & Co KG

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

Water hardness

21.8 °dH

Hardness range hard

Key values Brunnen VIII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8,9 mg/L	50 mg/l	18 %	Single value · Brunnen VIII
Sulphate	32,0 mg/L	250 mg/l	13 %	Single value · Brunnen VIII
Sodium	7,4 mg/L	200 mg/l	4 %	Single value · Brunnen VIII

Show all recorded parameters (13 — most recent value per parameter)

Chemical parameters (2)

Chemical parameters – Brunnen VIII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8,9 mg/L	50 mg/l	18 %	Single value · Brunnen VIII
Uranium	0,0011 mg/L	10 µg/l	11 %	Single value · Brunnen VIII

Indicator parameters (5)

Indicator parameters – Brunnen VIII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	29,0 mg/L	250 mg/l	12 %	Single value · Brunnen VIII
Conductivity (25 °C)	712 µS/cm	2,790 µS/cm	—	Single value · Brunnen VIII
pH	7,3 -	6,5–9,5	—	Single value · Brunnen VIII
Sodium	7,4 mg/L	200 mg/l	4 %	Single value · Brunnen VIII
Sulphate	32,0 mg/L	250 mg/l	13 %	Single value · Brunnen VIII

Further parameters (6)

Further parameters – Brunnen VIII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	109,0 mg/L	—	—	Single value · Brunnen VIII
Dissolved organic carbon (DOC)	<0,5 mg/L below limit of quantification	—	—	Single value · Brunnen VIII
Magnesium	24,0 mg/L	—	—	Single value · Brunnen VIII
Oxygen	3,58 mg/L	—	—	Single value · Brunnen VIII
Potassium	1,6 mg/L	—	—	Single value · Brunnen VIII
Total hardness	3,89 mmol/L	—	—	Single value · Brunnen VIII

Source: https://www.stadtwerke-kelheim.de/shared-files/22993399/?Trinkwasseranalyse.pdf= · Mai 2025 · retrieved on 11/07/2026

Postcodes in this zone: 93309

Frequently asked questions about drinking water in Kelheim

How hard is the water in Kelheim?: Stadtwerke Kelheim GmbH & Co KG publishes a total hardness of 2,6 mmol/L for the supply zone Brunnen Kelheimwinzer — that corresponds to 14.6 °dH. 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: Mai 2025, retrieved on 11/07/2026.
How much nitrate is in the drinking water in Kelheim?: Stadtwerke Kelheim GmbH & Co KG publishes a nitrate value of 9,8 mg/L for the supply zone Brunnen Kelheimwinzer. The statutory parametric value is 50 mg/l; the measured value represents 20 % of the parametric value. Basis: Mai 2025, retrieved on 11/07/2026.
Who supplies the drinking water in Kelheim?: Stadtwerke Kelheim GmbH & Co KG. The values shown here come from the supply zone Brunnen Kelheimwinzer 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.