Drinking water in Grône
3 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.
Réseau 1621-La lé
GrôneAssigned 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 |
|---|---|---|---|---|
| Nitrate | 2.2 mg/l | 40 mg/l | 6 % | Mean · Réseau 1621-La lé |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Réseau 1621-La lé |
| Sodium | 0.9 mg/l | 200 mg/l | 0.5 % | Mean · Réseau 1621-La lé |
An exceedance of a parametric value does not automatically mean a health risk; the statutory parametric values include safety margins. Assessment and any measures are the responsibility of the competent health authority of the respective country.
Show all recorded parameters (10 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 10 KBE/ml | 300 1/ml | — | Mean · Réseau 1621-La lé |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Réseau 1621-La lé |
| Intestinal enterococci | 2 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Réseau 1621-La lé |
An exceedance of a parametric value does not automatically mean a health risk; the statutory parametric values include safety margins. Assessment and any measures are the responsibility of the competent health authority of the respective country.
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2.2 mg/l | 40 mg/l | 6 % | Mean · Réseau 1621-La lé |
Indicator parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| pH | 7.8 | — | — | Mean · Réseau 1621-La lé |
| Sodium | 0.9 mg/l | 200 mg/l | 0.5 % | Mean · Réseau 1621-La lé |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 38.2 mg/l | — | — | Mean · Réseau 1621-La lé |
| Magnesium | 7.5 mg/l | — | — | Mean · Réseau 1621-La lé |
| Potassium | 0.3 mg/l | — | — | Mean · Réseau 1621-La lé |
| Total hardness | 12.5 °fH | — | — | Mean · Réseau 1621-La lé |
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: 3979
Show 2 more supply zones
Réseau 1622- Bisse-Neuf
GrôneAssigned 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 |
|---|---|---|---|---|
| Nitrate | 1.1 mg/l | 40 mg/l | 3 % | Mean · Réseau 1622- Bisse-Neuf |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Réseau 1622- Bisse-Neuf |
| Sodium | 1.1 mg/l | 200 mg/l | 0.5 % | Mean · Réseau 1622- Bisse-Neuf |
An exceedance of a parametric value does not automatically mean a health risk; the statutory parametric values include safety margins. Assessment and any measures are the responsibility of the competent health authority of the respective country.
Show all recorded parameters (9 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 12 KBE/ml | 300 1/ml | — | Mean · Réseau 1622- Bisse-Neuf |
| Escherichia coli (E. coli) | 1 KBE/100ml | 0/100 ml | above the parametric value — this parameter must not be detectable | Maximum · Median 0 · Réseau 1622- Bisse-Neuf |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Réseau 1622- Bisse-Neuf |
An exceedance of a parametric value does not automatically mean a health risk; the statutory parametric values include safety margins. Assessment and any measures are the responsibility of the competent health authority of the respective country.
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 1.1 mg/l | 40 mg/l | 3 % | Mean · Réseau 1622- Bisse-Neuf |
Indicator parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| pH | 8.1 | — | — | Mean · Réseau 1622- Bisse-Neuf |
| Sodium | 1.1 mg/l | 200 mg/l | 0.5 % | Mean · Réseau 1622- Bisse-Neuf |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 35.9 mg/l | — | — | Mean · Réseau 1622- Bisse-Neuf |
| Magnesium | 6.3 mg/l | — | — | Mean · Réseau 1622- Bisse-Neuf |
| Total hardness | 10.9 °fH | — | — | Mean · Réseau 1622- Bisse-Neuf |
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: 3979
Réseau 399-01- Grône
GrôneAssigned 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 |
|---|---|---|---|---|
| Nitrate | 2 mg/l | 40 mg/l | 5 % | Mean · Réseau 399-01- Grône |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Réseau 399-01- Grône |
| Sodium | 1 mg/l | 200 mg/l | 0.5 % | Mean · Réseau 399-01- Grône |
Show all recorded parameters (9 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 10 KBE/ml | 300 1/ml | — | Mean · Réseau 399-01- Grône |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Réseau 399-01- Grône |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · Réseau 399-01- Grône |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2 mg/l | 40 mg/l | 5 % | Mean · Réseau 399-01- Grône |
Indicator parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| pH | 8 | — | — | Mean · Réseau 399-01- Grône |
| Sodium | 1 mg/l | 200 mg/l | 0.5 % | Mean · Réseau 399-01- Grône |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 46.1 mg/l | — | — | Mean · Réseau 399-01- Grône |
| Magnesium | 8.4 mg/l | — | — | Mean · Réseau 399-01- Grône |
| Total hardness | 14.4 °fH | — | — | Mean · Réseau 399-01- Grône |
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: 3979
Frequently asked questions about drinking water in Grône
- How hard is the water in Grône?
- Grône publishes a total hardness of 12.5 °fH for the supply zone Réseau 1621-La lé — that corresponds to 7 °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: 2025, retrieved on 07/08/2026.
- How much nitrate is in the drinking water in Grône?
- Grône publishes a nitrate value of 2.2 mg/l for the supply zone Réseau 1621-La lé. The statutory parametric value is 40 mg/l; the measured value represents 6 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
- Who supplies the drinking water in Grône?
- Grône. The values shown here come from the supply zone Réseau 1621-La lé 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.