Drinking water in Aumühle
One supply zone, water supplier: Holsteiner Wasser GmbH.
How to read the share of the parametric value
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.
Grundwasserwerk Aumühle
Holsteiner Wasser GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | 0 mg/l | — | — | Mean |
| Nitrate | 0,5 mg/l | 50 mg/l | 1 % | Mean |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Escherichia coli (E. coli) | 0 /100 ml | 0/100 ml | — | Maximum · Median 0 |
| Sulphate | 25 mg/l | 250 mg/l | 10 % | Mean |
| Sodium | 11,4 mg/l | 200 mg/l | 6 % | Mean |
* 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.
Show all recorded parameters (53 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 /100 ml | 0/100 ml | — | Maximum · Median 0 |
| Intestinal enterococci | 0 /100 ml | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (24)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0,0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Mean |
| Antimony | < 0,0001 mg/l below limit of quantification | 5 µg/l | < 2 % * | Mean |
| Arsenic | < 0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Benzene | < 0,0003 mg/l below limit of quantification | 1 µg/l | < 30 % * | Mean |
| Benzo(a)pyrene | < 0,000003 mg/l below limit of quantification | 10 ng/l | < 30 % * | Mean |
| Bisphenol A | < 0,00005 mg/l below limit of quantification | 2.5 µg/l | < 2 % * | Mean |
| Boron | < 0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromate | < 0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean |
| Cadmium | < 0,0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Mean |
| Chromium | < 0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Mean |
| Copper | 0,002 mg/l | 2 mg/l | 0.1 % | Mean |
| Cyanide | < 0,004 mg/l below limit of quantification | 50 µg/l | < 8 % * | Mean |
| Fluoride | 0,13 mg/l | 1.5 mg/l | 9 % | Mean |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Mercury | < 0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Nickel | < 0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Mean |
| Nitrate | 0,5 mg/l | 50 mg/l | 1 % | Mean |
| Nitrite | < 0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Mean |
| Pesticides — Total | 0 mg/l | 0.5 µg/l | 0 % | Mean |
| Polycyclic aromatic hydrocarbons | 0 mg/l | 0.1 µg/l | 0 % | Mean |
| Selenium | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Tetrachloroethene and Trichloroethene (sum) | 0 mg/l | 10 µg/l | 0 % | Mean |
| Trihalomethanes — Total | 0 mg/l | 50 µg/l | 0 % | Mean |
| Uranium | < 0,0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Mean |
* 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.
PFAS (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | 0 mg/l | — | — | Mean |
Indicator parameters (17)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Ammonium | < 0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean |
| Calcite dissolution capacity | 1,75 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 16 mg/l | 250 mg/l | 6 % | Mean |
| Coliform bacteria | 0 /100 ml | 0/100 ml | — | Maximum · Median 0 |
| Colony count 22 °C | 0 /ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 /ml | ohne anormale Veränderung | — | Mean |
| Colour | 0,1 1/m | 0.5 m⁻¹ | — | Mean |
| Conductivity (25 °C) | 389 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | < 0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Manganese | < 0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean |
| pH | 7,48 - | 6,5–9,5 | — | Mean |
| Sodium | 11,4 mg/l | 200 mg/l | 6 % | Mean |
| Sulphate | 25 mg/l | 250 mg/l | 10 % | Mean |
| Temperature | 10 °C | — | — | Mean |
| Total organic carbon (TOC) | 0,91 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | 0,09 NTU | 1 NTU | — | Mean |
* 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.
Further parameters (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 3,07 mmol/l | — | — | Mean |
| Base capacity to pH 8.2 | 0,21 mmol/l | — | — | Mean |
| Calcium | 64 mg/l | — | — | Mean |
| Carbonate hardness | 8,6 °dH | — | — | Mean |
| Magnesium | 5 mg/l | — | — | Mean |
| Oxygen | 2,7 mg/l | — | — | Mean |
| Potassium | 1,1 mg/l | — | — | Mean |
| Total hardness | 10,2 °dH | — | — | Mean |
| Zinc | < 0,01 mg/l below limit of quantification | — | — | Mean |
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.
Postcodes in this zone: 21521
Frequently asked questions about drinking water in Aumühle
- How hard is the water in Aumühle?
- Holsteiner Wasser GmbH publishes a total hardness of 10.2 °dH for the supply zone Grundwasserwerk Aumühle (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 08/07/2026.
- How much nitrate is in the drinking water in Aumühle?
- Holsteiner Wasser GmbH publishes a nitrate value of 0,5 mg/l for the supply zone Grundwasserwerk Aumühle. The statutory parametric value is 50 mg/l; the measured value represents 1 % of the parametric value. Basis: Publication by the water supplier, retrieved on 08/07/2026.
- Who supplies the drinking water in Aumühle?
- Holsteiner Wasser GmbH. The values shown here come from the supply zone Grundwasserwerk Aumühle 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.