Drinking water in 65366
For this postcode Geisenheim publishes several supply zones. Which of them serves an individual address is not published — below are the values of the zone with the most documented parameters, the remaining 1 underneath.
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.
Geisenheim
GeisenheimAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
14.8 °dH
Hardness range hart
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 14,7 mg/l | 50 mg/l | 29 % | Single value · Geisenheim |
| Lead | < ‹ 0,001 mg/l below limit of quantification | 10 µg/l | — | Single value · Geisenheim |
| Sulphate | 51 mg/l | 250 mg/l | 20 % | Single value · Geisenheim |
| Sodium | 16,6 mg/l | 200 mg/l | 8 % | Single value · Geisenheim |
Show all recorded parameters (33 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Intestinal enterococci | 0 Anz./100ml | 0/100 ml | — | Single value · Geisenheim |
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 | — | Single value · Geisenheim |
| Arsenic | < ‹ 0,001 mg/l below limit of quantification | 10 µg/l | — | Single value · Geisenheim |
| Boron | < ‹ 0,05 mg/l below limit of quantification | 1 mg/l | — | Single value · Geisenheim |
| Cadmium | < ‹ 0,0005 mg/l below limit of quantification | 3 µg/l | — | Single value · Geisenheim |
| Copper | < ‹ 0,005 mg/l below limit of quantification | 2 mg/l | — | Single value · Geisenheim |
| Lead | < ‹ 0,001 mg/l below limit of quantification | 10 µg/l | — | Single value · Geisenheim |
| Nickel | < ‹ 0,002 mg/l below limit of quantification | 20 µg/l | — | Single value · Geisenheim |
| Nitrate | 14,7 mg/l | 50 mg/l | 29 % | Single value · Geisenheim |
| Nitrite | < ‹ 0,02 mg/l below limit of quantification | 0.5 mg/l | — | Single value · Geisenheim |
| Selenium | 0,001 mg/l | 10 µg/l | 10 % | Single value · Geisenheim |
| Uranium | 0,0014 mg/l | 10 µg/l | 14 % | Single value · Geisenheim |
Indicator parameters (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < ‹ 0,02 mg/l below limit of quantification | 0.2 mg/l | — | Single value · Geisenheim |
| Ammonium | < ‹ 0,04 mg/l below limit of quantification | 0.5 mg/l | — | Single value · Geisenheim |
| Chloride | 31,2 mg/l | 250 mg/l | 12 % | Single value · Geisenheim |
| Clostridium perfringens (including spores) | - Anz./100ml not determined | 0/100 ml | — | Single value · Geisenheim |
| Coliform bacteria | 0 Anz./100ml | 0/100 ml | — | Single value · Geisenheim |
| Conductivity (25 °C) | 615 μS/cm | 2,790 µS/cm | — | Single value · Geisenheim |
| Iron | 0,02 mg/l | 0.2 mg/l | 10 % | Single value · Geisenheim |
| Manganese | < ‹ 0,005 mg/l below limit of quantification | 50 µg/l | — | Single value · Geisenheim |
| pH | 7,37 | 6,5–9,5 | — | Single value · Geisenheim |
| Sodium | 16,6 mg/l | 200 mg/l | 8 % | Single value · Geisenheim |
| Sulphate | 51 mg/l | 250 mg/l | 20 % | Single value · Geisenheim |
| Taste | ohne | für den Verbraucher annehmbar | — | Single value · Geisenheim |
| Temperature | 11,3 °C | — | — | Single value · Geisenheim |
| Total organic carbon (TOC) | 1,0 mg/l | ohne anormale Veränderung | — | Single value · Geisenheim |
| Turbidity | < ‹ 0,1 FNU below limit of quantification | 1 NTU | — | Single value · Geisenheim |
Further parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 79,3 mg/l | — | — | Single value · Geisenheim |
| Hardness range (WRMG) | hart | — | — | Single value · Geisenheim |
| Magnesium | 16,1 mg/l | — | — | Single value · Geisenheim |
| Potassium | 2,9 mg/l | — | — | Single value · Geisenheim |
| Sum of alkaline earth metals | 2,6 mmol/l | — | — | Single value · Geisenheim |
| Total hardness | 14,8 °dH | — | — | Single value · Geisenheim |
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.geisenheim.de/rathaus-politik/verwaltung/stadtwerke/trinkwasserversorgung/trinkwasserqualitaet-und-wasserhaerte/ · Stand November 2025 · 23. November 2025 · retrieved on 25/07/2026
Show 1 more supply zone in this postcode
Stephanshausen
GeisenheimAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
6.1 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 6,2 mg/l | 50 mg/l | 12 % | Single value · Stephanshausen |
| Lead | < ‹ 0,001 mg/l below limit of quantification | 10 µg/l | — | Single value · Stephanshausen |
| Sulphate | 20 mg/l | 250 mg/l | 8 % | Single value · Stephanshausen |
| Sodium | 13,6 mg/l | 200 mg/l | 7 % | Single value · Stephanshausen |
Show all recorded parameters (33 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Intestinal enterococci | 0 Anz./100ml | 0/100 ml | — | Single value · Stephanshausen |
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 | — | Single value · Stephanshausen |
| Arsenic | < ‹ 0,001 mg/l below limit of quantification | 10 µg/l | — | Single value · Stephanshausen |
| Boron | < ‹ 0,05 mg/l below limit of quantification | 1 mg/l | — | Single value · Stephanshausen |
| Cadmium | < ‹ 0,0005 mg/l below limit of quantification | 3 µg/l | — | Single value · Stephanshausen |
| Copper | < ‹ 0,005 mg/l below limit of quantification | 2 mg/l | — | Single value · Stephanshausen |
| Lead | < ‹ 0,001 mg/l below limit of quantification | 10 µg/l | — | Single value · Stephanshausen |
| Nickel | < ‹ 0,002 mg/l below limit of quantification | 20 µg/l | — | Single value · Stephanshausen |
| Nitrate | 6,2 mg/l | 50 mg/l | 12 % | Single value · Stephanshausen |
| Nitrite | < ‹ 0,02 mg/l below limit of quantification | 0.5 mg/l | — | Single value · Stephanshausen |
| Selenium | < ‹ 0,001 mg/l below limit of quantification | 10 µg/l | — | Single value · Stephanshausen |
| Uranium | < ‹ 0,0005 mg/l below limit of quantification | 10 µg/l | — | Single value · Stephanshausen |
Indicator parameters (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < ‹ 0,02 mg/l below limit of quantification | 0.2 mg/l | — | Single value · Stephanshausen |
| Ammonium | 0,05 mg/l | 0.5 mg/l | 10 % | Single value · Stephanshausen |
| Chloride | 21,6 mg/l | 250 mg/l | 9 % | Single value · Stephanshausen |
| Clostridium perfringens (including spores) | - Anz./100ml not determined | 0/100 ml | — | Single value · Stephanshausen |
| Coliform bacteria | 0 Anz./100ml | 0/100 ml | — | Single value · Stephanshausen |
| Conductivity (25 °C) | 292 μS/cm | 2,790 µS/cm | — | Single value · Stephanshausen |
| Iron | < ‹ 0,01 mg/l below limit of quantification | 0.2 mg/l | — | Single value · Stephanshausen |
| Manganese | < ‹ 0,005 mg/l below limit of quantification | 50 µg/l | — | Single value · Stephanshausen |
| pH | 7,92 | 6,5–9,5 | — | Single value · Stephanshausen |
| Sodium | 13,6 mg/l | 200 mg/l | 7 % | Single value · Stephanshausen |
| Sulphate | 20 mg/l | 250 mg/l | 8 % | Single value · Stephanshausen |
| Taste | ohne | für den Verbraucher annehmbar | — | Single value · Stephanshausen |
| Temperature | 9,9 °C | — | — | Single value · Stephanshausen |
| Total organic carbon (TOC) | 0,5 mg/l | ohne anormale Veränderung | — | Single value · Stephanshausen |
| Turbidity | 0,1 FNU | 1 NTU | — | Single value · Stephanshausen |
Further parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 30,5 mg/l | — | — | Single value · Stephanshausen |
| Hardness range (WRMG) | weich | — | — | Single value · Stephanshausen |
| Magnesium | 7,8 mg/l | — | — | Single value · Stephanshausen |
| Potassium | 1,5 mg/l | — | — | Single value · Stephanshausen |
| Sum of alkaline earth metals | 1,1 mmol/l | — | — | Single value · Stephanshausen |
| Total hardness | 6,1 °dH | — | — | Single value · Stephanshausen |
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.geisenheim.de/rathaus-politik/verwaltung/stadtwerke/trinkwasserversorgung/trinkwasserqualitaet-und-wasserhaerte/ · Stand November 2025 · 23. November 2025 · retrieved on 25/07/2026
Frequent questions about postcode 65366
- How hard is the water in Postcode 65366?
- Geisenheim publishes a total hardness of 14.8 °dH for the supply zone Geisenheim (hardness range hart). 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: Stand November 2025, retrieved on 25/07/2026.
- How much nitrate is in the drinking water in Postcode 65366?
- Geisenheim publishes a nitrate value of 14,7 mg/l for the supply zone Geisenheim. The statutory parametric value is 50 mg/l; the measured value represents 29 % of the parametric value. Basis: Stand November 2025, retrieved on 25/07/2026.
- Who supplies the drinking water in Postcode 65366?
- Geisenheim. The values shown here come from the supply zone Geisenheim 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.