Drinking water in 42799
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 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.
Große Dhünn-Talsperre
WVV-Rhein-WupperAssigned 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 | 8,16 mg/L | 50 mg/l | 16 % | Mean |
| Lead | <0,0002 mg/L below limit of quantification | 10 µg/l | < 2 % * | Mean |
| Escherichia coli (E. coli) | 0 Anzahl/100ml | 0/100 ml | — | Maximum · Median 0 |
| Sulphate | 13,5 mg/L | 250 mg/l | 5 % | Mean |
| Sodium | 5,3 mg/L | 200 mg/l | 3 % | Mean |
* 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 (58 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Anzahl/100ml | 0/100 ml | — | Maximum · Median 0 |
| Intestinal enterococci | 0 Anzahl/100ml | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (28)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,00010 mg/L below limit of quantification | 3 µg/l | < 3 % * | Mean |
| Antimony | <0,00010 mg/L below limit of quantification | 5 µg/l | < 2 % * | Mean |
| Arsenic | <0,00030 mg/L below limit of quantification | 10 µg/l | < 3 % * | Mean |
| Benzene | <0,0001 mg/L below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Benzo(a)pyrene | <0,000010 mg/L below limit of quantification | 10 ng/l | < 100 % * | Mean |
| Bisphenol A | <0,00003 mg/L below limit of quantification | 2.5 µg/l | < 1 % * | Mean |
| Boron | 0,012 mg/L | 1 mg/l | 1 % | Mean |
| Bromate | <0,0005 mg/L below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Cadmium | <0,00008 mg/L below limit of quantification | 3 µg/l | < 3 % * | Mean |
| Chlorate | 0,012 mg/L | 70 µg/l | 17 % | Mean |
| Chlorite | 0,045 mg/L | 0.2 mg/l | 22 % | Mean |
| Chromium | 0,0006 mg/L | 25 µg/l | 2 % | Mean |
| Copper | <0,0010 mg/L below limit of quantification | 2 mg/l | < < 0.1 % * | Mean |
| Cyanide | <0,005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Mean |
| Epichlorohydrin | <0,00003 mg/L below limit of quantification | 0.1 µg/l | < 30 % * | Mean |
| Fluoride | <0,2 mg/L below limit of quantification | 1.5 mg/l | < 13 % * | Mean |
| Haloacetic acids (HAA) | n.b mg/L not determined | — | — | Mean |
| Lead | <0,0002 mg/L below limit of quantification | 10 µg/l | < 2 % * | Mean |
| Mercury | <0,00005 mg/L below limit of quantification | 1 µg/l | < 5 % * | Mean |
| Nickel | 0,0005 mg/L | 20 µg/l | 3 % | Mean |
| Nitrate | 8,16 mg/L | 50 mg/l | 16 % | Mean |
| Nitrite | <0,030 mg/L below limit of quantification | 0.5 mg/l | < 6 % * | Mean |
| Polycyclic aromatic hydrocarbons | n.b mg/L not determined | 0.1 µg/l | — | Mean |
| Selenium | <0,0002 mg/L below limit of quantification | 10 µg/l | < 2 % * | Mean |
| Tetrachloroethene and Trichloroethene (sum) | <0,00010 mg/L below limit of quantification | 10 µg/l | < 1 % * | Mean |
| Trihalomethanes — Total | n.b mg/L not determined | 50 µg/l | — | Mean |
| Uranium | <0,0001 mg/L below limit of quantification | 10 µg/l | < 1 % * | Mean |
| Vinyl chloride | <0,0001 mg/L below limit of quantification | 0.5 µg/l | < 20 % * | Mean |
* 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 (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorobutanoic acid (PFBA) | 0,0000012 mg/L | — | — | Mean |
Indicator parameters (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0,0038 mg/L | 0.2 mg/l | 2 % | Mean |
| Ammonium | <0,05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Mean |
| Calcite dissolution capacity | 0,87 mg/L | 5 mg/l CaCO3 | — | Mean |
| Chloride | 8,8 mg/L | 250 mg/l | 4 % | Mean |
| Clostridium perfringens (including spores) | 0 Anzahl/100ml | 0/100 ml | — | Maximum · Median 0 |
| Coliform bacteria | 0 Anzahl/100ml | 0/100 ml | — | Maximum · Median 0 |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Mean |
| Colour | <0,10 1/m below limit of quantification | 0.5 m⁻¹ | — | Mean |
| Iron | <0,02 mg/L below limit of quantification | 0.2 mg/l | < 10 % * | Mean |
| Manganese | <0,005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Mean |
| Odour | ohne Befund - | für den Verbraucher annehmbar | — | Mean |
| pH | 8,18 - | 6,5–9,5 | — | Mean |
| Sodium | 5,3 mg/L | 200 mg/l | 3 % | Mean |
| Sulphate | 13,5 mg/L | 250 mg/l | 5 % | Mean |
| Taste | ohne Befund - | für den Verbraucher annehmbar | — | Mean |
| Temperature | 7,7 °C | — | — | Mean |
| Total organic carbon (TOC) | 0,72 mg/L | ohne anormale Veränderung | — | Mean |
| Turbidity | 0,06 FNU | 1 NTU | — | Mean |
* 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.
Treatment substances (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorine dioxide | 0,09 mg/L | — | — | Mean |
Further parameters (7)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 1,21 mmol/L | — | — | Mean |
| Calcium | 25,6 mg/L | — | — | Mean |
| Carbonate hardness | 3,25 °dH | — | — | Mean |
| Hardness range (WRMG) | weich - | — | — | Mean |
| Magnesium | 3,4 mg/L | — | — | Mean |
| Potassium | 1,5 mg/L | — | — | Mean |
| Total hardness | 0,78 mmol/L CaCO3 | — | — | Mean |
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
Wasserwerk Schürholz
Wasserversorgungsverband Rhein-WupperAssigned 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 | < 12 Milligramm pro Liter below limit of quantification | 50 mg/l | — | Single value |
Show all recorded parameters (2 — most recent value per parameter)
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | < 12 Milligramm pro Liter below limit of quantification | 50 mg/l | — | Single value |
| Uranium | < 0,1 Mikrogramm pro Liter Wasser below limit of quantification | 10 µg/l | — | 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 42799
- How hard is the water in Postcode 42799?
- WVV-Rhein-Wupper publishes a total hardness of 0,78 mmol/L CaCO3 for the supply zone Große Dhünn-Talsperre — that corresponds to 4.4 °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: 24.02.2026, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Postcode 42799?
- WVV-Rhein-Wupper publishes a nitrate value of 8,16 mg/L for the supply zone Große Dhünn-Talsperre. The statutory parametric value is 50 mg/l; the measured value represents 16 % of the parametric value. Basis: 24.02.2026, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 42799?
- WVV-Rhein-Wupper. The values shown here come from the supply zone Große Dhünn-Talsperre 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.