Drinking water in Grainau
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
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.
Gemeinde Grainau (vier Tiefbrunnen im Grainauer "Unterwald")
Wasserversorgung Gemeinde GrainauAssigned 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 28/10/2019. 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.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 1,6 mg/l | 50 mg/l | 3 % | Single value |
| Lead | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value · Analyse gemäß Anl.2, der TrinkwV 2001 |
| Sulphate | 12,4 mg/l | 250 mg/l | 5 % | Single value |
| Sodium | 1,5 mg/l | 200 mg/l | 0.8 % | Single value |
* 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 (29 — most recent value per parameter)
Chemical parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Single value · Analyse gemäß Anl.2, der TrinkwV 2001 |
| Arsenic | <0,0009 mg/l below limit of quantification | 10 µg/l | < 9 % * | Single value · Analyse gemäß Anl.2, der TrinkwV 2001 |
| Benzo(a)pyrene | <0,001 µg/l below limit of quantification | 10 ng/l | < 10 % * | Single value · Analyse gemäß Anl.2, der TrinkwV 2001 |
| Cadmium | <0,0002 mg/l below limit of quantification | 3 µg/l | < 7 % * | Single value · Analyse gemäß Anl.2, der TrinkwV 2001 |
| Copper | <0,04 mg/l below limit of quantification | 2 mg/l | < 2 % * | Single value · Analyse gemäß Anl.2, der TrinkwV 2001 |
| Lead | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value · Analyse gemäß Anl.2, der TrinkwV 2001 |
| Nitrate | 1,6 mg/l | 50 mg/l | 3 % | Single value |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value |
| Polycyclic aromatic hydrocarbons | n.n. µg/l not detectable | 0.1 µg/l | — | Single value · Analyse gemäß Anl.2, der TrinkwV 2001 |
| Trihalomethanes — Total | n.n. µg/l not detectable | 50 µg/l | — | Single value · Analyse gemäß Anl.2, der TrinkwV 2001 |
| Vinyl chloride | <0,25 µg/l below limit of quantification | 0.5 µg/l | < 50 % * | Single value · Analyse gemäß Anl.2, der TrinkwV 2001 |
* 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 (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value |
| Calcite dissolution capacity | -2 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | <0,5 mg/l below limit of quantification | 250 mg/l | < 0.2 % * | Single value |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Conductivity (25 °C) | 280 µS/cm | 2,790 µS/cm | — | Single value |
| Sodium | 1,5 mg/l | 200 mg/l | 0.8 % | Single value |
| Sulphate | 12,4 mg/l | 250 mg/l | 5 % | Single value |
| Temperature | 9,3 °C | — | — | Single value |
| Turbidity | <0,05 NTU below limit of quantification | 1 NTU | — | Single value |
* 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 (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Carbonate hardness | 7,73 °dH | — | — | Single value |
| Free carbon dioxide | 3,9 mg/l | — | — | Single value |
| Magnesium | 10,9 mg/l | — | — | Single value |
| Oxygen | 9,5 mg/l | — | — | Single value |
| Potassium | 0,5 mg/l | — | — | Single value |
| Saturation index | 0,08 - | — | — | Single value |
| Sum of alkaline earth metals | 1,5 mmol/l | — | — | Single value |
| Total hardness | 8,14 °dH | — | — | Single value |
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: 82491
Show 3 more supply zones
Mineral- und Tafelwasserverordnung
Wasserversorgung Gemeinde GrainauAssigned 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 28/10/2019. 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.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sodium | 1,5 mg/l | 200 mg/l | 0.8 % | Single value · Mineral- und Tafelwasserverordnung |
Postcodes in this zone: 82491
Anlage 2, Teil 1
Wasserversorgung Gemeinde GrainauAssigned 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 28/10/2019. 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.
No core values are available for this zone yet.
Show all recorded parameters (8 — most recent value per parameter)
Chemical parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,3 µg/l below limit of quantification | 3 µg/l | < 10 % * | Single value · Anlage 2, Teil 1 |
| Benzene | <0,25 µg/l below limit of quantification | 1 µg/l | < 25 % * | Single value · Anlage 2, Teil 1 |
| Boron | 0,02 mg/l | 1 mg/l | 2 % | Single value · Anlage 2, Teil 1 |
| Chromium | <0,001 mg/l below limit of quantification | 25 µg/l | < 4 % * | Single value · Anlage 2, Teil 1 |
| Cyanide | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Single value · Anlage 2, Teil 1 |
| Mercury | <0,0002 mg/l below limit of quantification | 1 µg/l | < 20 % * | Single value · Anlage 2, Teil 1 |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Anlage 2, Teil 1 |
| Uranium | 0,0009 mg/l | 10 µg/l | 9 % | Single value · Anlage 2, Teil 1 |
* 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.
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: 82491
Korrosionswahrscheinlichkeit nach DIN EN 12502
Wasserversorgung Gemeinde GrainauAssigned 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 28/10/2019. 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.
No core values are available for this zone yet.
Show all recorded parameters (1 — most recent value per parameter)
Further parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Copper quotient | 21,38 - | — | — | Single value · Korrosionswahrscheinlichkeit nach DIN EN 12502 |
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: 82491
Frequently asked questions about drinking water in Grainau
- How hard is the water in Grainau?
- Wasserversorgung Gemeinde Grainau publishes a total hardness of 8.1 °dH for the supply zone Gemeinde Grainau (vier Tiefbrunnen im Grainauer "Unterwald") (hardness range soft). 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 14/07/2026.
- How much nitrate is in the drinking water in Grainau?
- Wasserversorgung Gemeinde Grainau publishes a nitrate value of 1,6 mg/l for the supply zone Gemeinde Grainau (vier Tiefbrunnen im Grainauer "Unterwald"). The statutory parametric value is 50 mg/l; the measured value represents 3 % of the parametric value. Basis: Publication by the water supplier, retrieved on 14/07/2026.
- Who supplies the drinking water in Grainau?
- Wasserversorgung Gemeinde Grainau. The values shown here come from the supply zone Gemeinde Grainau (vier Tiefbrunnen im Grainauer "Unterwald") 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.