Drinking water in 53604
For this postcode the responsible water supplier 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 2 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.
Bad Honnef einschließlich Aegidienberg und VG Unkel
Bad Honnef AGAssigned 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 10/01/2023. 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 | 11,4 mg/l | 50 mg/l | 23 % | Single value |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Sulphate | 54,2 mg/l | 250 mg/l | 22 % | Single value |
| Sodium | 31 mg/l | 200 mg/l | 16 % | 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 (47 — most recent value per parameter)
Chemical parameters (23)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0002 mg/l below limit of quantification | 3 µg/l | < 7 % * | Single value |
| Antimony | <0,0005 mg/l below limit of quantification | 5 µg/l | < 10 % * | Single value |
| Arsenic | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Benzene | <0,0002 mg/l below limit of quantification | 1 µg/l | < 20 % * | Single value |
| Benzo(a)pyrene | <0,00001 mg/l below limit of quantification | 10 ng/l | < 100 % * | Single value |
| Boron | 0,04 mg/l | 1 mg/l | 4 % | Single value |
| Bromate | <0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Cadmium | <0,0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Single value |
| Chromium | <0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Single value |
| Copper | <0,02 mg/l below limit of quantification | 2 mg/l | < 1 % * | Single value |
| Cyanide | <0,015 mg/l below limit of quantification | 50 µg/l | < 30 % * | Single value |
| Fluoride | 0,14 mg/l | 1.5 mg/l | 9 % | Single value |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Nickel | <0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Single value |
| Nitrate | 11,4 mg/l | 50 mg/l | 23 % | Single value |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value |
| Pesticides — Total | <0,0005 mg/l below limit of quantification | 0.5 µg/l | < 100 % * | Single value |
| Polycyclic aromatic hydrocarbons | <0,00001 mg/l below limit of quantification | 0.1 µg/l | < 10 % * | Single value |
| Selenium | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Tetrachloroethene and Trichloroethene (sum) | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Trihalomethanes — Total | 0,0011 mg/l | 50 µg/l | 2 % | Single value |
| Uranium | 0,00082 mg/l | 10 µg/l | 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.
Indicator parameters (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,04 mg/l below limit of quantification | 0.2 mg/l | < 20 % * | Single value |
| Ammonium | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Single value |
| Calcite dissolution capacity | -1 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 47,9 mg/l | 250 mg/l | 19 % | Single value |
| Colony count 36 °C | 0 /ml | ohne anormale Veränderung | — | Single value |
| Colour | <0,10 m-1 below limit of quantification | 0.5 m⁻¹ | — | Single value |
| Conductivity (25 °C) | 585 µS/cm | 2,790 µS/cm | — | Single value |
| Manganese | <0,001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Single value |
| pH | 7,5 | 6,5–9,5 | — | Single value |
| Sodium | 31 mg/l | 200 mg/l | 16 % | Single value |
| Sulphate | 54,2 mg/l | 250 mg/l | 22 % | Single value |
| Temperature | 12,6 °C | — | — | Single value |
| Threshold odour number (TON) | 1 | — | — | Single value |
| Total organic carbon (TOC) | 0,42 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | 0,06 NTU | 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 (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 3,28 mol/m³ | — | — | Single value |
| Base capacity to pH 8.2 | 0,20 mol/m³ | — | — | Single value |
| Calcium | 69,7 mg/l | — | — | Single value |
| Carbonate hardness | 9,2 °dH | — | — | Single value |
| Hydrogen carbonate | 200 mg/l | — | — | Single value |
| Magnesium | 12,4 mg/l | — | — | Single value |
| Oxygen | 8,3 mg/l | — | — | Single value |
| Potassium | 4,0 mg/l | — | — | Single value |
| Sum of alkaline earth metals | 2,25 mol/m³ | — | — | 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.
Show 2 more supply zones in this postcode
Hochbehälter Scharfenberg
Wasserbeschaffungsverband (WBV) ThomasbergAssigned 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 | 21,4 mg/l | 50 mg/l | 43 % | Single value · Hochbehälter Scharfenberg |
| Sulphate | 37,6 mg/l | 250 mg/l | 15 % | Single value · Hochbehälter Scharfenberg |
| Sodium | 11,9 mg/l | 200 mg/l | 6 % | Single value · Hochbehälter Scharfenberg |
Show all recorded parameters (11 — most recent value per parameter)
Chemical parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Boron | 0,02 mg/l | 1 mg/l | 2 % | Single value · Hochbehälter Scharfenberg |
| Fluoride | 0,11 mg/l | 1.5 mg/l | 7 % | Single value · Hochbehälter Scharfenberg |
| Nitrate | 21,4 mg/l | 50 mg/l | 43 % | Single value · Hochbehälter Scharfenberg |
| Uranium | 0,0007 mg/l | 10 µg/l | 7 % | Single value · Hochbehälter Scharfenberg |
Indicator parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 26,6 mg/l | 250 mg/l | 11 % | Single value · Hochbehälter Scharfenberg |
| Sodium | 11,9 mg/l | 200 mg/l | 6 % | Single value · Hochbehälter Scharfenberg |
| Sulphate | 37,6 mg/l | 250 mg/l | 15 % | Single value · Hochbehälter Scharfenberg |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 66,0 mg/l | — | — | Single value · Hochbehälter Scharfenberg |
| Magnesium | 11,0 mg/l | — | — | Single value · Hochbehälter Scharfenberg |
| Potassium | 2,7 mg/l | — | — | Single value · Hochbehälter Scharfenberg |
| Total hardness | 11,8 °dH | — | — | Single value · Hochbehälter Scharfenberg |
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.
Wahnbachtalsperrenverband (WTV)
Wasserbeschaffungsverband (WBV) ThomasbergAssigned 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 | 8,6 mg/l | 50 mg/l | 17 % | Single value · Wahnbachtalsperrenverband (WTV) |
| Sulphate | 25 mg/l | 250 mg/l | 10 % | Single value · Wahnbachtalsperrenverband (WTV) |
| Sodium | 11,0 mg/l | 200 mg/l | 5 % | Single value · Wahnbachtalsperrenverband (WTV) |
Show all recorded parameters (11 — most recent value per parameter)
Chemical parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Boron | 0,02 mg/l | 1 mg/l | 2 % | Single value · Wahnbachtalsperrenverband (WTV) |
| Fluoride | 0,06 mg/l | 1.5 mg/l | 4 % | Single value · Wahnbachtalsperrenverband (WTV) |
| Nitrate | 8,6 mg/l | 50 mg/l | 17 % | Single value · Wahnbachtalsperrenverband (WTV) |
| Uranium | <0,0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Single value · Wahnbachtalsperrenverband (WTV) |
* 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 (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 22 mg/l | 250 mg/l | 9 % | Single value · Wahnbachtalsperrenverband (WTV) |
| Sodium | 11,0 mg/l | 200 mg/l | 5 % | Single value · Wahnbachtalsperrenverband (WTV) |
| Sulphate | 25 mg/l | 250 mg/l | 10 % | Single value · Wahnbachtalsperrenverband (WTV) |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 26,1 mg/l | — | — | Single value · Wahnbachtalsperrenverband (WTV) |
| Magnesium | 1,9 mg/l | — | — | Single value · Wahnbachtalsperrenverband (WTV) |
| Potassium | 2,2 mg/l | — | — | Single value · Wahnbachtalsperrenverband (WTV) |
| Total hardness | 4,9 °dH | — | — | Single value · Wahnbachtalsperrenverband (WTV) |
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 53604
- How much nitrate is in the drinking water in Postcode 53604?
- Bad Honnef AG publishes a nitrate value of 11,4 mg/l for the supply zone Bad Honnef einschließlich Aegidienberg und VG Unkel. The statutory parametric value is 50 mg/l; the measured value represents 23 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 53604?
- Bad Honnef AG. The values shown here come from the supply zone Bad Honnef einschließlich Aegidienberg und VG Unkel 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.