Drinking water in 42551
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 7 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.
Behälter Lindenstraße, Lindenstr.1 (06-1000)
Stadtwerke VelbertAssigned 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 | 10,9 mg/l | 50 mg/l | 22 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Sulphate | 31 mg/l | 250 mg/l | 12 % | Mean |
| Sodium | 27 mg/l | 200 mg/l | 13 % | 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 (46 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Mean |
Chemical parameters (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Mean |
| Arsenic | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Benzo(a)pyrene | <0,0025 µg/l below limit of quantification | 10 ng/l | < 25 % * | Mean |
| Bisphenol A | <0,015 µg/l below limit of quantification | 2.5 µg/l | < 0.6 % * | Mean |
| Boron | 0,07 mg/l | 1 mg/l | 7 % | Mean |
| Bromate | <0,0030 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Mean |
| Copper | 0,021 mg/l | 2 mg/l | 1 % | Mean |
| Fluoride | 0,09 mg/l | 1.5 mg/l | 6 % | Mean |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Mean |
| Nitrate | 10,9 mg/l | 50 mg/l | 22 % | Mean |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Mean |
| Polycyclic aromatic hydrocarbons | <0,005 µg/l below limit of quantification | 0.1 µg/l | < 5 % * | Mean |
| Trihalomethanes — Total | 2,010 µg/l | 50 µg/l | 4 % | 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.
Indicator parameters (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Ammonium | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean |
| Calcite dissolution capacity | 2 mg/l | 5 mg/l CaCO3 | — | Mean |
| Chloride | 33 mg/l | 250 mg/l | 13 % | Mean |
| Clostridium perfringens (including spores) | 0 KBE/100 ml | 0/100 ml | — | Mean |
| Coliform bacteria | 0 KBE/100 ml | 0/100 ml | — | Mean |
| 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 |
| Conductivity (25 °C) | 582 µS/cm | 2,790 µS/cm | — | Mean |
| Iron | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| Manganese | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Mean |
| pH | 7,99 | 6,5–9,5 | — | Mean |
| Sodium | 27 mg/l | 200 mg/l | 13 % | Mean |
| Sulphate | 31 mg/l | 250 mg/l | 12 % | Mean |
| Temperature | 14,5 °C | — | — | Mean |
| Total organic carbon (TOC) | <0,5 mg/l below limit of quantification | 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.
Further parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 1,79 mmol/l | — | — | Mean |
| Base capacity to pH 8.2 | 0,04 mmol/l | — | — | Mean |
| Calcium | 41 mg/l | — | — | Mean |
| Carbonate hardness | 5,0 °dH | — | — | Mean |
| Hardness range (WRMG) | weich | — | — | Mean |
| Magnesium | 7,5 mg/l | — | — | Mean |
| Oxygen | 7,3 mg/l | — | — | Mean |
| Phosphate | 1,47 mg/l | — | — | Mean |
| Potassium | 2,9 mg/l | — | — | Mean |
| Silicate / silicic acid | 3,6 mg/l | — | — | Mean |
| Total hardness | 7,5 °dH | — | — | 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 7 more supply zones in this postcode
Essen-Kettwig
RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbHAssigned 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 | 9,9 mg/l | 50 mg/l | 20 % | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Sulphate | 46 mg/l | 250 mg/l | 18 % | Median |
| Sodium | 56,2 mg/l | 200 mg/l | 28 % | Median |
* 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 (46 — most recent value per parameter)
Chemical parameters (24)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,3 µg/l below limit of quantification | 3 µg/l | < 10 % * | Median |
| Antimony | <1 µg/l below limit of quantification | 5 µg/l | < 20 % * | Median |
| Arsenic | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Benzene | <0,2 µg/l below limit of quantification | 1 µg/l | < 20 % * | Median |
| Benzo(a)pyrene | <0,002 µg/l below limit of quantification | 10 ng/l | < 20 % * | Median |
| Boron | 0,07 mg/l | 1 mg/l | 7 % | Median |
| Bromate | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Cadmium | <0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Median |
| Chromium | <5 µg/l below limit of quantification | 25 µg/l | < 20 % * | Median |
| Copper | <20 µg/l below limit of quantification | 2 mg/l | < 1 % * | Median |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| Fluoride | <0,2 mg/l below limit of quantification | 1.5 mg/l | < 13 % * | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Mercury | <0,1 µg/l below limit of quantification | 1 µg/l | < 10 % * | Median |
| Nickel | <1 µg/l below limit of quantification | 20 µg/l | < 5 % * | Median |
| Nitrate | 9,9 mg/l | 50 mg/l | 20 % | Median |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Median |
| Pesticides | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Pesticides — Total | n.n. µg/l not detectable | 0.5 µg/l | — | Median |
| Polycyclic aromatic hydrocarbons | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Selenium | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Tetrachloroethene and Trichloroethene (sum) | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Trihalomethanes — Total | <1 µg/l below limit of quantification | 50 µg/l | < 2 % * | Median |
| Uranium | <0,5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Median |
* 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 (13)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <20 µg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Ammonium | <0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Median |
| Chloride | 70 mg/l | 250 mg/l | 28 % | Median |
| Colour | <0,05 1/m below limit of quantification | 0.5 m⁻¹ | — | Median |
| Conductivity (25 °C) | 621 µS/cm | 2,790 µS/cm | — | Median |
| Iron | <0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Manganese | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| pH | 7,84 | 6,5–9,5 | — | Median |
| Sodium | 56,2 mg/l | 200 mg/l | 28 % | Median |
| Sulphate | 46 mg/l | 250 mg/l | 18 % | Median |
| Temperature | 18,4 °C | — | — | Median |
| Total organic carbon (TOC) | <0,5 mg/l below limit of quantification | ohne anormale Veränderung | — | Median |
| Turbidity | <0,1 NTU below limit of quantification | 1 NTU | — | Median |
* 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 | 2,58 mmol/l | — | — | Median |
| Calcium | 45,4 mg/l | — | — | Median |
| Carbonate hardness | 7,2 °dH | — | — | Median |
| Hardness range (WRMG) | weich | — | — | Median |
| Magnesium | 8,2 mg/l | — | — | Median |
| Phosphate | 1,6 mg/l | — | — | Median |
| Potassium | 4,5 mg/l | — | — | Median |
| Sum of alkaline earth metals | 1,47 mmol/l | — | — | Median |
| Total hardness | 8,2 °dH | — | — | Median |
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.
Mülheim-Styrum-Ost, Mülheim-Styrum-West
RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbHAssigned 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 | 8,7 mg/l | 50 mg/l | 17 % | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Sulphate | 47 mg/l | 250 mg/l | 19 % | Median |
| Sodium | 55,8 mg/l | 200 mg/l | 28 % | Median |
* 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 (46 — most recent value per parameter)
Chemical parameters (24)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,3 µg/l below limit of quantification | 3 µg/l | < 10 % * | Median |
| Antimony | <1 µg/l below limit of quantification | 5 µg/l | < 20 % * | Median |
| Arsenic | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Benzene | <0,2 µg/l below limit of quantification | 1 µg/l | < 20 % * | Median |
| Benzo(a)pyrene | <0,002 µg/l below limit of quantification | 10 ng/l | < 20 % * | Median |
| Boron | 0,07 mg/l | 1 mg/l | 7 % | Median |
| Bromate | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Cadmium | <0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Median |
| Chromium | <5 µg/l below limit of quantification | 25 µg/l | < 20 % * | Median |
| Copper | <20 µg/l below limit of quantification | 2 mg/l | < 1 % * | Median |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| Fluoride | <0,2 mg/l below limit of quantification | 1.5 mg/l | < 13 % * | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Mercury | <0,1 µg/l below limit of quantification | 1 µg/l | < 10 % * | Median |
| Nickel | <1 µg/l below limit of quantification | 20 µg/l | < 5 % * | Median |
| Nitrate | 8,7 mg/l | 50 mg/l | 17 % | Median |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Median |
| Pesticides | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Pesticides — Total | n.n. µg/l not detectable | 0.5 µg/l | — | Median |
| Polycyclic aromatic hydrocarbons | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Selenium | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Tetrachloroethene and Trichloroethene (sum) | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Trihalomethanes — Total | <1 µg/l below limit of quantification | 50 µg/l | < 2 % * | Median |
| Uranium | <0,5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Median |
* 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 (13)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <20 µg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Ammonium | <0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Median |
| Chloride | 67 mg/l | 250 mg/l | 27 % | Median |
| Colour | <0,05 1/m below limit of quantification | 0.5 m⁻¹ | — | Median |
| Conductivity (25 °C) | 590 µS/cm | 2,790 µS/cm | — | Median |
| Iron | <0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Manganese | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| pH | 7,78 | 6,5–9,5 | — | Median |
| Sodium | 55,8 mg/l | 200 mg/l | 28 % | Median |
| Sulphate | 47 mg/l | 250 mg/l | 19 % | Median |
| Temperature | 14,8 °C | — | — | Median |
| Total organic carbon (TOC) | 0,5 mg/l | ohne anormale Veränderung | — | Median |
| Turbidity | <0,1 NTU below limit of quantification | 1 NTU | — | Median |
* 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 | 2,60 mmol/l | — | — | Median |
| Calcium | 43,6 mg/l | — | — | Median |
| Carbonate hardness | 7,3 °dH | — | — | Median |
| Hardness range (WRMG) | weich | — | — | Median |
| Magnesium | 8,3 mg/l | — | — | Median |
| Phosphate | <0,5 mg/l below limit of quantification | — | — | Median |
| Potassium | 5,0 mg/l | — | — | Median |
| Sum of alkaline earth metals | 1,43 mmol/l | — | — | Median |
| Total hardness | 8,0 °dH | — | — | Median |
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.
Dorsten-Holsterhausen
RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbHAssigned 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 | 9,6 mg/l | 50 mg/l | 19 % | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Sulphate | 60 mg/l | 250 mg/l | 24 % | Median |
| Sodium | 11,3 mg/l | 200 mg/l | 6 % | Median |
* 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 (46 — most recent value per parameter)
Chemical parameters (24)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,3 µg/l below limit of quantification | 3 µg/l | < 10 % * | Median |
| Antimony | <1 µg/l below limit of quantification | 5 µg/l | < 20 % * | Median |
| Arsenic | 1 µg/l | 10 µg/l | 10 % | Median |
| Benzene | <0,2 µg/l below limit of quantification | 1 µg/l | < 20 % * | Median |
| Benzo(a)pyrene | <0,002 µg/l below limit of quantification | 10 ng/l | < 20 % * | Median |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Median |
| Bromate | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Cadmium | <0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Median |
| Chromium | <5 µg/l below limit of quantification | 25 µg/l | < 20 % * | Median |
| Copper | <20 µg/l below limit of quantification | 2 mg/l | < 1 % * | Median |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| Fluoride | <0,2 mg/l below limit of quantification | 1.5 mg/l | < 13 % * | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Mercury | <0,1 µg/l below limit of quantification | 1 µg/l | < 10 % * | Median |
| Nickel | <1 µg/l below limit of quantification | 20 µg/l | < 5 % * | Median |
| Nitrate | 9,6 mg/l | 50 mg/l | 19 % | Median |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Median |
| Pesticides | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Pesticides — Total | n.n. µg/l not detectable | 0.5 µg/l | — | Median |
| Polycyclic aromatic hydrocarbons | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Selenium | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Tetrachloroethene and Trichloroethene (sum) | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Trihalomethanes — Total | <1 µg/l below limit of quantification | 50 µg/l | < 2 % * | Median |
| Uranium | <0,5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Median |
* 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 (13)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <20 µg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Ammonium | <0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Median |
| Chloride | 26 mg/l | 250 mg/l | 10 % | Median |
| Colour | <0,05 1/m below limit of quantification | 0.5 m⁻¹ | — | Median |
| Conductivity (25 °C) | 517 µS/cm | 2,790 µS/cm | — | Median |
| Iron | <0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Manganese | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| pH | 7,45 | 6,5–9,5 | — | Median |
| Sodium | 11,3 mg/l | 200 mg/l | 6 % | Median |
| Sulphate | 60 mg/l | 250 mg/l | 24 % | Median |
| Temperature | 11,8 °C | — | — | Median |
| Total organic carbon (TOC) | 0,6 mg/l | ohne anormale Veränderung | — | Median |
| Turbidity | <0,1 NTU below limit of quantification | 1 NTU | — | Median |
* 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 | 3,10 mmol/l | — | — | Median |
| Calcium | 89,5 mg/l | — | — | Median |
| Carbonate hardness | 8,7 °dH | — | — | Median |
| Hardness range (WRMG) | mittel | — | — | Median |
| Magnesium | 4,1 mg/l | — | — | Median |
| Phosphate | 1,5 mg/l | — | — | Median |
| Potassium | 2,2 mg/l | — | — | Median |
| Sum of alkaline earth metals | 2,40 mmol/l | — | — | Median |
| Total hardness | 13,5 °dH | — | — | Median |
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.
Mülheim-Styrum-Ost (Versorgungsbereich: Mülheim-Mintard)
RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbHAssigned 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 | 9,5 mg/l | 50 mg/l | 19 % | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Sulphate | 46 mg/l | 250 mg/l | 18 % | Median |
| Sodium | 50,1 mg/l | 200 mg/l | 25 % | Median |
* 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 (46 — most recent value per parameter)
Chemical parameters (24)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,3 µg/l below limit of quantification | 3 µg/l | < 10 % * | Median |
| Antimony | <1 µg/l below limit of quantification | 5 µg/l | < 20 % * | Median |
| Arsenic | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Benzene | <0,2 µg/l below limit of quantification | 1 µg/l | < 20 % * | Median |
| Benzo(a)pyrene | <0,002 µg/l below limit of quantification | 10 ng/l | < 20 % * | Median |
| Boron | 0,07 mg/l | 1 mg/l | 7 % | Median |
| Bromate | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Cadmium | <0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Median |
| Chromium | <5 µg/l below limit of quantification | 25 µg/l | < 20 % * | Median |
| Copper | <20 µg/l below limit of quantification | 2 mg/l | < 1 % * | Median |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| Fluoride | <0,2 mg/l below limit of quantification | 1.5 mg/l | < 13 % * | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Mercury | <0,1 µg/l below limit of quantification | 1 µg/l | < 10 % * | Median |
| Nickel | <1 µg/l below limit of quantification | 20 µg/l | < 5 % * | Median |
| Nitrate | 9,5 mg/l | 50 mg/l | 19 % | Median |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Median |
| Pesticides | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Pesticides — Total | n.n. µg/l not detectable | 0.5 µg/l | — | Median |
| Polycyclic aromatic hydrocarbons | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Selenium | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Tetrachloroethene and Trichloroethene (sum) | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Trihalomethanes — Total | <1 µg/l below limit of quantification | 50 µg/l | < 2 % * | Median |
| Uranium | <0,5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Median |
* 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 (13)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <20 µg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Ammonium | <0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Median |
| Chloride | 62 mg/l | 250 mg/l | 25 % | Median |
| Colour | <0,05 1/m below limit of quantification | 0.5 m⁻¹ | — | Median |
| Conductivity (25 °C) | 592 µS/cm | 2,790 µS/cm | — | Median |
| Iron | <0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Manganese | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| pH | 7,77 | 6,5–9,5 | — | Median |
| Sodium | 50,1 mg/l | 200 mg/l | 25 % | Median |
| Sulphate | 46 mg/l | 250 mg/l | 18 % | Median |
| Temperature | 14,5 °C | — | — | Median |
| Total organic carbon (TOC) | 0,7 mg/l | ohne anormale Veränderung | — | Median |
| Turbidity | <0,1 NTU below limit of quantification | 1 NTU | — | Median |
* 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 | 2,87 mmol/l | — | — | Median |
| Calcium | 47,9 mg/l | — | — | Median |
| Carbonate hardness | 8,0 °dH | — | — | Median |
| Hardness range (WRMG) | mittel | — | — | Median |
| Magnesium | 8,4 mg/l | — | — | Median |
| Phosphate | <0,5 mg/l below limit of quantification | — | — | Median |
| Potassium | 4,8 mg/l | — | — | Median |
| Sum of alkaline earth metals | 1,54 mmol/l | — | — | Median |
| Total hardness | 8,6 °dH | — | — | Median |
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.
Reken-Melchenberg (Versorgungsbereiche: Reken, Gescher-Hochmoor, Velen (ohne Velen-Ramsdorf))
RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbHAssigned 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 | 30,7 mg/l | 50 mg/l | 61 % | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Sulphate | 8 mg/l | 250 mg/l | 3 % | Median |
| Sodium | 36,1 mg/l | 200 mg/l | 18 % | Median |
* 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 (46 — most recent value per parameter)
Chemical parameters (24)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,3 µg/l below limit of quantification | 3 µg/l | < 10 % * | Median |
| Antimony | <1 µg/l below limit of quantification | 5 µg/l | < 20 % * | Median |
| Arsenic | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Benzene | <0,2 µg/l below limit of quantification | 1 µg/l | < 20 % * | Median |
| Benzo(a)pyrene | <0,002 µg/l below limit of quantification | 10 ng/l | < 20 % * | Median |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Median |
| Bromate | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Cadmium | <0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Median |
| Chromium | <5 µg/l below limit of quantification | 25 µg/l | < 20 % * | Median |
| Copper | <20 µg/l below limit of quantification | 2 mg/l | < 1 % * | Median |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| Fluoride | <0,2 mg/l below limit of quantification | 1.5 mg/l | < 13 % * | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Mercury | <0,1 µg/l below limit of quantification | 1 µg/l | < 10 % * | Median |
| Nickel | 3 µg/l | 20 µg/l | 15 % | Median |
| Nitrate | 30,7 mg/l | 50 mg/l | 61 % | Median |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Median |
| Pesticides | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Pesticides — Total | n.n. µg/l not detectable | 0.5 µg/l | — | Median |
| Polycyclic aromatic hydrocarbons | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Selenium | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Tetrachloroethene and Trichloroethene (sum) | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Trihalomethanes — Total | <1 µg/l below limit of quantification | 50 µg/l | < 2 % * | Median |
| Uranium | <0,5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Median |
* 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 (13)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <20 µg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Ammonium | <0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Median |
| Chloride | 18 mg/l | 250 mg/l | 7 % | Median |
| Colour | <0,05 1/m below limit of quantification | 0.5 m⁻¹ | — | Median |
| Conductivity (25 °C) | 313 µS/cm | 2,790 µS/cm | — | Median |
| Iron | <0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Manganese | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| pH | 8,30 | 6,5–9,5 | — | Median |
| Sodium | 36,1 mg/l | 200 mg/l | 18 % | Median |
| Sulphate | 8 mg/l | 250 mg/l | 3 % | Median |
| Temperature | 10,8 °C | — | — | Median |
| Total organic carbon (TOC) | <0,5 mg/l below limit of quantification | ohne anormale Veränderung | — | Median |
| Turbidity | <0,1 NTU below limit of quantification | 1 NTU | — | Median |
* 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 | 1,86 mmol/l | — | — | Median |
| Calcium | 23,5 mg/l | — | — | Median |
| Carbonate hardness | 5,2 °dH | — | — | Median |
| Hardness range (WRMG) | weich | — | — | Median |
| Magnesium | 2,3 mg/l | — | — | Median |
| Phosphate | 1,6 mg/l | — | — | Median |
| Potassium | 1,8 mg/l | — | — | Median |
| Sum of alkaline earth metals | 0,68 mmol/l | — | — | Median |
| Total hardness | 3,8 °dH | — | — | Median |
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.
Velen-Tannenbültenberg, Reken-Melchenberg; Versorgungsbereiche: Velen, Gescher-Hochmoor, Borken-Weseke und -Burlo
RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbHAssigned 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 | 29,7 mg/l | 50 mg/l | 59 % | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Sulphate | 10 mg/l | 250 mg/l | 4 % | Median |
| Sodium | 34,6 mg/l | 200 mg/l | 17 % | Median |
* 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 (46 — most recent value per parameter)
Chemical parameters (24)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,3 µg/l below limit of quantification | 3 µg/l | < 10 % * | Median |
| Antimony | <1 µg/l below limit of quantification | 5 µg/l | < 20 % * | Median |
| Arsenic | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Benzene | <0,2 µg/l below limit of quantification | 1 µg/l | < 20 % * | Median |
| Benzo(a)pyrene | <0,002 µg/l below limit of quantification | 10 ng/l | < 20 % * | Median |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Median |
| Bromate | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Cadmium | <0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Median |
| Chromium | <5 µg/l below limit of quantification | 25 µg/l | < 20 % * | Median |
| Copper | <20 µg/l below limit of quantification | 2 mg/l | < 1 % * | Median |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| Fluoride | <0,2 mg/l below limit of quantification | 1.5 mg/l | < 13 % * | Median |
| Lead | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Mercury | <0,1 µg/l below limit of quantification | 1 µg/l | < 10 % * | Median |
| Nickel | 2 µg/l | 20 µg/l | 10 % | Median |
| Nitrate | 29,7 mg/l | 50 mg/l | 59 % | Median |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Median |
| Pesticides | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Pesticides — Total | n.n. µg/l not detectable | 0.5 µg/l | — | Median |
| Polycyclic aromatic hydrocarbons | n.n. µg/l not detectable | 0.1 µg/l | — | Median |
| Selenium | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Tetrachloroethene and Trichloroethene (sum) | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Median |
| Trihalomethanes — Total | <1 µg/l below limit of quantification | 50 µg/l | < 2 % * | Median |
| Uranium | <0,5 µg/l below limit of quantification | 10 µg/l | < 5 % * | Median |
* 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 (13)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <20 µg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Ammonium | <0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Median |
| Chloride | 17 mg/l | 250 mg/l | 7 % | Median |
| Colour | <0,05 1/m below limit of quantification | 0.5 m⁻¹ | — | Median |
| Conductivity (25 °C) | 316 µS/cm | 2,790 µS/cm | — | Median |
| Iron | <0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Median |
| Manganese | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Median |
| pH | 8,28 | 6,5–9,5 | — | Median |
| Sodium | 34,6 mg/l | 200 mg/l | 17 % | Median |
| Sulphate | 10 mg/l | 250 mg/l | 4 % | Median |
| Temperature | 11,0 °C | — | — | Median |
| Total organic carbon (TOC) | <0,5 mg/l below limit of quantification | ohne anormale Veränderung | — | Median |
| Turbidity | <0,1 NTU below limit of quantification | 1 NTU | — | Median |
* 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 | 1,96 mmol/l | — | — | Median |
| Calcium | 24,1 mg/l | — | — | Median |
| Carbonate hardness | 5,5 °dH | — | — | Median |
| Hardness range (WRMG) | weich | — | — | Median |
| Magnesium | 2,4 mg/l | — | — | Median |
| Phosphate | 1,7 mg/l | — | — | Median |
| Potassium | 1,9 mg/l | — | — | Median |
| Sum of alkaline earth metals | 0,70 mmol/l | — | — | Median |
| Total hardness | 3,9 °dH | — | — | Median |
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.
Reinwasser neues Wasserwerk WW Offlum (Lokalisation: Reinwasser WW Offlum)
RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbHAssigned 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 12/03/2025. 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 | 6,87 mg/l | 50 mg/l | 14 % | Single value |
| Lead | <0,0010 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Sulphate | 69,4 mg/l | 250 mg/l | 28 % | Single value |
| Sodium | 19,3 mg/l | 200 mg/l | 10 % | 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 (87 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Single value |
Chemical parameters (60)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0010 mg/l below limit of quantification | 3 µg/l | < 33 % * | Single value |
| 2,4-D | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Antimony | <0,0015 mg/l below limit of quantification | 5 µg/l | < 30 % * | Single value |
| Arsenic | <0,0025 mg/l below limit of quantification | 10 µg/l | < 25 % * | Single value |
| Atrazine | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Bentazone | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Benzene | <0,0003 mg/l below limit of quantification | 1 µg/l | < 30 % * | Single value |
| Benzo(a)pyrene | <0,000003 mg/l below limit of quantification | 10 ng/l | < 30 % * | Single value |
| Benzo(b)fluoranthene | <0,000007 mg/l below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | <0,000007 mg/l below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | <0,000007 mg/l below limit of quantification | — | — | Single value |
| Boron | 0,053 mg/l | 1 mg/l | 5 % | Single value |
| Bromacil | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Bromate | <0,0025 mg/l below limit of quantification | 10 µg/l | < 25 % * | Single value |
| Bromoxynil | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Single value |
| Carbetamide | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Chloridazon | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Chlorotoluron | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Chromium | <0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Single value |
| Clopyralid | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Copper | <0,0500 mg/l below limit of quantification | 2 mg/l | < 3 % * | Single value |
| Cyanide | <0,0020 mg/l below limit of quantification | 50 µg/l | < 4 % * | Single value |
| Desethylatrazine | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Desethylterbuthylazine | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Desisopropylatrazine | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Dicamba | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Dichlorprop | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Diflufenican | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Dimefuron | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Diuron | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Ethidimuron | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Flufenacet | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Fluoride | 0,107 mg/l | 1.5 mg/l | 7 % | Single value |
| Hexazinone | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Indeno(1,2,3-cd)pyrene | <0,000007 mg/l below limit of quantification | — | — | Single value |
| Isoproturon | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Lead | <0,0010 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| MCPA | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Mecoprop | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Metamitron | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Metazachlor | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Methabenzthiazuron | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Metolachlor | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Metribuzin | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Nickel | <0,0010 mg/l below limit of quantification | 20 µg/l | < 5 % * | Single value |
| Nitrate | 6,87 mg/l | 50 mg/l | 14 % | Single value |
| Nitrite | <0,0300 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Single value |
| Pendimethalin | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Pesticides — Total | <0,00003 mg/l below limit of quantification | 0.5 µg/l | < 6 % * | Single value |
| Polycyclic aromatic hydrocarbons | <0,00002 mg/l below limit of quantification | 0.1 µg/l | < 20 % * | Single value |
| Prosulfocarb | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Quinmerac | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Selenium | 0,0015 mg/l | 10 µg/l | 15 % | Single value |
| Simazine | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Terbuthylazine | <0,00003 mg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene | <0,0015 mg/l below limit of quantification | — | — | Single value |
| Trichloroethene | <0,0015 mg/l below limit of quantification | — | — | Single value |
| Trihalomethanes — Total | 0,000 mg/l | 50 µg/l | 0 % | Single value |
| Uranium | 0,0011 mg/l | 10 µg/l | 11 % | 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 (16)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,0400 mg/l below limit of quantification | 0.2 mg/l | < 20 % * | Single value |
| Ammonium | <0,1000 mg/l below limit of quantification | 0.5 mg/l | < 20 % * | Single value |
| Calcite dissolution capacity | 0 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 28,7 mg/l | 250 mg/l | 11 % | Single value |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Single value |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Single value |
| Conductivity (25 °C) | 601 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | <0,0400 mg/l below limit of quantification | 0.2 mg/l | < 20 % * | Single value |
| Manganese | <0,0300 mg/l below limit of quantification | 50 µg/l | < 60 % * | Single value |
| Odour | geruchlos | für den Verbraucher annehmbar | — | Single value |
| Oxidisability | 1,93 mg/l O2 | 5 mg/l O2 | — | Single value |
| Sodium | 19,3 mg/l | 200 mg/l | 10 % | Single value |
| Sulphate | 69,4 mg/l | 250 mg/l | 28 % | Single value |
| Taste | ohne | für den Verbraucher annehmbar | — | Single value |
| Total organic carbon (TOC) | 4,42 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | <0,10 FTU below limit of quantification | 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 (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| AOX (adsorbable organically bound halogens) | <0,01 mg/l below limit of quantification | — | — | Single value |
| Calcite precipitation capacity | 6,45 mg/l | — | — | Single value |
| Calcium | 90 mg/l | — | — | Single value |
| Carbonate hardness | 10,6 °dH | — | — | Single value |
| Dissolved organic carbon (DOC) | 3,45 mg/l | — | — | Single value |
| Hydrogen carbonate | 230 mg/l | — | — | Single value |
| Magnesium | 5,20 mg/l | — | — | Single value |
| Potassium | 7,0 mg/l | — | — | Single value |
| Silicate / silicic acid | 7,78 mg/l | — | — | Single value |
| Total hardness | 13,8 °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 42551
- How hard is the water in Postcode 42551?
- Stadtwerke Velbert publishes a total hardness of 7.5 °dH for the supply zone Behälter Lindenstraße, Lindenstr.1 (06-1000) (hardness range weich). 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: Publication by the water supplier, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Postcode 42551?
- Stadtwerke Velbert publishes a nitrate value of 10,9 mg/l for the supply zone Behälter Lindenstraße, Lindenstr.1 (06-1000). The statutory parametric value is 50 mg/l; the measured value represents 22 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 42551?
- Stadtwerke Velbert. The values shown here come from the supply zone Behälter Lindenstraße, Lindenstr.1 (06-1000) 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.