Drinking water in 78462
For this postcode Stadtwerke Konstanz 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
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.
Friedrich III / nach Aufbereitung
Stadtwerke KonstanzAssigned 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 03/02/2025. 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 | 3,4 mg/l | 50 mg/l | 7 % | Single value · Friedrich III / nach Aufbereitung |
| Sulphate | 34 mg/l | 250 mg/l | 14 % | Single value · Friedrich III / nach Aufbereitung |
| Sodium | 5,6 mg/l | 200 mg/l | 3 % | Single value · Friedrich III / nach Aufbereitung |
Show all recorded parameters (57 — most recent value per parameter)
Chemical parameters (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0,0005 mg/l below limit of quantification | 3 µg/l | < 17 % * | Single value · Friedrich III / nach Aufbereitung |
| Atrazine | < 0,000025 mg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Benzene | < 0,00025 mg/l below limit of quantification | 1 µg/l | < 25 % * | Single value · Friedrich III / nach Aufbereitung |
| Boron | < 0,02 mg/l below limit of quantification | 1 mg/l | < 2 % * | Single value · Friedrich III / nach Aufbereitung |
| Bromate | < 0,0025 mg/l below limit of quantification | 10 µg/l | < 25 % * | Single value · Friedrich III / nach Aufbereitung |
| Chromium | < 0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Single value · Friedrich III / nach Aufbereitung |
| Cyanide | n.u. mg/l not determined | 50 µg/l | — | Single value · Friedrich III / nach Aufbereitung |
| Fluoride | < 0,15 mg/l below limit of quantification | 1.5 mg/l | < 10 % * | Single value · Friedrich III / nach Aufbereitung |
| Mercury | < 0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value · Friedrich III / nach Aufbereitung |
| Metazachlor | < 0,000025 mg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Metolachlor | < 0,000025 mg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Nitrate | 3,4 mg/l | 50 mg/l | 7 % | Single value · Friedrich III / nach Aufbereitung |
| Pesticides — Total | (n. b.) mg/l not determined | 0.5 µg/l | — | Single value · Friedrich III / nach Aufbereitung |
| Selenium | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Friedrich III / nach Aufbereitung |
| Simazine | < 0,000025 mg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Terbuthylazine | < 0,000025 mg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Tetrachloroethene | < 0,0005 mg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Trichloroethene | < 0,0005 mg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Uranium | 0,0011 mg/l | 10 µg/l | 11 % | Single value · Friedrich III / nach Aufbereitung |
* 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 (14)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorobutane sulfonic acid (PFBS) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluorobutanoic acid (PFBA) | 0,0015 µg/l | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluorodecane sulfonic acid (PFDS) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluoroheptane sulfonic acid (PFHpS) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluoroheptanoic acid (PFHpA) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluorohexane sulfonic acid (PFHxS) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluorohexanoic acid (PFHxA) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluorononane sulfonic acid (PFNS) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluorononanoic acid (PFNA) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluorooctanesulfonic acid (PFOS) | 0,0014 µg/l | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluorooctanoic acid (PFOA) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluoropentanesulfonic acid (PFPeS) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluoropentanoic acid (PFPeA) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
| Perfluorotridecanesulfonic acid (PFTrDS) | < 0,0010 µg/l below limit of quantification | — | — | Single value · Friedrich III / nach Aufbereitung |
Indicator parameters (12)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 0,005 mg/l below limit of quantification | 0.2 mg/l | < 3 % * | Single value · Friedrich III / nach Aufbereitung |
| Ammonium | 0,01 mg/l | 0.5 mg/l | 2 % | Single value · Friedrich III / nach Aufbereitung |
| Calcite dissolution capacity | -6,0 mg/l | 5 mg/l CaCO3 | — | Single value · Friedrich III / nach Aufbereitung |
| Chloride | 7,1 mg/l | 250 mg/l | 3 % | Single value · Friedrich III / nach Aufbereitung |
| Conductivity (25 °C) | 333 µS/cm | 2,790 µS/cm | — | Single value · Friedrich III / nach Aufbereitung |
| Iron | 0,007 mg/l | 0.2 mg/l | 3 % | Single value · Friedrich III / nach Aufbereitung |
| Manganese | < 0,001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Single value · Friedrich III / nach Aufbereitung |
| pH | 8,07 | 6,5–9,5 | — | Single value · Friedrich III / nach Aufbereitung |
| Sodium | 5,6 mg/l | 200 mg/l | 3 % | Single value · Friedrich III / nach Aufbereitung |
| Sulphate | 34 mg/l | 250 mg/l | 14 % | Single value · Friedrich III / nach Aufbereitung |
| Temperature | 6,8 °C | — | — | Single value · Friedrich III / nach Aufbereitung |
| Total organic carbon (TOC) | 1,2 mg/l | ohne anormale Veränderung | — | Single value · Friedrich III / nach Aufbereitung |
* 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 (12)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,7 mmol/l | — | — | Single value · Friedrich III / nach Aufbereitung |
| Base capacity to pH 8.2 | n.u. mmol/l not determined | — | — | Single value · Friedrich III / nach Aufbereitung |
| Calcium | 50,0 mg/l | — | — | Single value · Friedrich III / nach Aufbereitung |
| Carbonate hardness | 1,35 mmol/l | — | — | Single value · Friedrich III / nach Aufbereitung |
| Hardness range (WRMG) | mittel | — | — | Single value · Friedrich III / nach Aufbereitung |
| Hydrogen carbonate | 165 mg/l | — | — | Single value · Friedrich III / nach Aufbereitung |
| Magnesium | 8,5 mg/l | — | — | Single value · Friedrich III / nach Aufbereitung |
| Oxygen | 11,9 mg/l | — | — | Single value · Friedrich III / nach Aufbereitung |
| Phosphate | 0,02 mg/l | — | — | Single value · Friedrich III / nach Aufbereitung |
| Potassium | 1,4 mg/l | — | — | Single value · Friedrich III / nach Aufbereitung |
| Saturation index | 0,32 | — | — | Single value · Friedrich III / nach Aufbereitung |
| Total hardness | 1,60 mmol/l | — | — | Single value · Friedrich III / nach Aufbereitung |
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.
Show 1 more supply zone in this postcode
Seewasserwerk Staad
Stadtwerke KonstanzAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
No date is given for these values. The water supplier publishes the analysis without a sampling date and without a report date. When the water was examined is not apparent from the source — we do not add a date and we do not estimate one. What is stated is therefore only when we retrieved the document.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 3,6 mg/l | 50 mg/l | 7 % | Single value |
| Sodium | 5,8 mg/l | 200 mg/l | 3 % | Single value |
Show all recorded parameters (6 — most recent value per parameter)
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | < 0,15 mg/l below limit of quantification | 1.5 mg/l | < 10 % * | Single value |
| Nitrate | 3,6 mg/l | 50 mg/l | 7 % | 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.
Indicator parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| pH | 7,8 | 6,5–9,5 | — | Single value |
| Sodium | 5,8 mg/l | 200 mg/l | 3 % | Single value |
Further parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Hardness range (WRMG) | mittel | — | — | Single value |
| Total hardness | 9,17 °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.
Frequent questions about postcode 78462
- How hard is the water in Postcode 78462?
- Stadtwerke Konstanz publishes a total hardness of 1,60 mmol/l for the supply zone Friedrich III / nach Aufbereitung — that corresponds to 9 °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: 07.03.2025, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Postcode 78462?
- Stadtwerke Konstanz publishes a nitrate value of 3,4 mg/l for the supply zone Friedrich III / nach Aufbereitung. The statutory parametric value is 50 mg/l; the measured value represents 7 % of the parametric value. Basis: 07.03.2025, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 78462?
- Stadtwerke Konstanz. The values shown here come from the supply zone Friedrich III / nach Aufbereitung 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.