Drinking water in Heiligenhaus
12 supply zones — values can differ depending on the district. Below is the zone with the most documented parameters, the others collapsed underneath. To determine the exact match, look up the postcode.
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.
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.
Postcodes in this zone: 42579
Show 11 more supply zones
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.
Postcodes in this zone: 42579
heiligenhaus gesamt
Stadtwerke HeiligenhausAssigned 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 |
|---|---|---|---|---|
| Sum of PFAS | 0,0000035 mg/l | — | — | Mean |
| Nitrate | 6,4 mg/l | 50 mg/l | 13 % | Mean |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Escherichia coli (E. coli) | 0 KBE/IOO ml | 0/100 ml | — | Mean |
| Sulphate | 78 mg/l | 250 mg/l | 31 % | Mean |
| Sodium | 12,3 mg/l | 200 mg/l | 6 % | 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 (49 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/IOO ml | 0/100 ml | — | Mean |
| Intestinal enterococci | 0 KBE/IOO ml | 0/100 ml | — | Mean |
Chemical parameters (28)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Mean |
| Acrylamide | < 0,00001 mg/l below limit of quantification | 0.1 µg/l | < 10 % * | Mean |
| Antimony | < 0.001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Mean |
| Arsenic | < 0.001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Benzene | < 0,0002 mg/l below limit of quantification | 1 µg/l | < 20 % * | Mean |
| Benzo(a)pyrene | < 0,000001 mg/l below limit of quantification | 10 ng/l | < 10 % * | Mean |
| Bisphenol A | <0,001 mg/l below limit of quantification | 2.5 µg/l | < 40 % * | Mean |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Mean |
| Bromate | < 0.003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Mean |
| Bromodichloromethane | < 0,0001 mg/l below limit of quantification | — | — | Mean |
| Cadmium | < 0,0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Mean |
| Copper | <0,10 mg/l below limit of quantification | 2 mg/l | < 5 % * | Mean |
| Dibromochloromethane | < 0,0001 mg/l below limit of quantification | — | — | Mean |
| Fluoride | 0,11 mg/l | 1.5 mg/l | 7 % | Mean |
| Haloacetic acids (HAA) | nicht nachweisbar not detectable | — | — | Mean |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Nickel | <0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Mean |
| Nitrate | 6,4 mg/l | 50 mg/l | 13 % | Mean |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Mean |
| Polycyclic aromatic hydrocarbons | nicht nachweisbar mg/l not detectable | 0.1 µg/l | — | Mean |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Tetrachloroethene | 0,0036 mg/l | — | — | Mean |
| Tribromomethane (bromoform) | < 0,0001 mg/l below limit of quantification | — | — | Mean |
| Trichloroethene | 0,0001 mg/l | — | — | Mean |
| Trichloromethane (chloroform) | < 0.0001 mg/l below limit of quantification | — | — | Mean |
| Uranium | 0,002 mg/l | 10 µg/l | 20 % | Mean |
| Vinyl chloride | <0 0001 mg/l below limit of quantification | 0.5 µg/l | cannot be assessed — the limit of quantification of the measurement is above the parametric value | 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 (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of 4 PFAS | 0,0000023 mg/l | — | — | Mean |
| Sum of PFAS | 0,0000035 mg/l | — | — | Mean |
Indicator parameters (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | <0,04 mg/l below limit of quantification | 0.5 mg/l | < 8 % * | Mean |
| Chloride | 33 mg/l | 250 mg/l | 13 % | Mean |
| Coliform bacteria | 0 KBE/IOO 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 |
| Iron | <0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Mean |
| pH | 7,46 | 6,5–9,5 | — | Mean |
| Sodium | 12,3 mg/l | 200 mg/l | 6 % | Mean |
| Sulphate | 78 mg/l | 250 mg/l | 31 % | 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 (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 5,36 mmol/l | — | — | Mean |
| Calcium | 98 mg/l | — | — | Mean |
| Magnesium | 29 mg/l | — | — | Mean |
| Oxygen | 2,7 mg/l | — | — | Mean |
| Potassium | 1,7 mg/l | — | — | Mean |
| Silicate / silicic acid | 10,2 mg/l | — | — | Mean |
| Sum of alkaline earth metals | 3,6 mmol/l | — | — | Mean |
| Total hardness | 20,4 °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.
Postcodes in this zone: 42579
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.
Postcodes in this zone: 42579
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.
Postcodes in this zone: 42579
Netz Homberg
Stadtwerke RatingenAssigned 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 | 6,5 mg/l | 50 mg/l | 13 % | Single value · Netz Homberg |
| Sodium | 10,5 mg/l | 200 mg/l | 5 % | Single value · Netz Homberg |
Show all recorded parameters (8 — most recent value per parameter)
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 6,5 mg/l | 50 mg/l | 13 % | Single value · Netz Homberg |
| Nitrite | <0,020 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value · Netz Homberg |
* 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 (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | <0,020 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value · Netz Homberg |
| Chloride | 27,3 mg/l | 250 mg/l | 11 % | Single value · Netz Homberg |
| Iron | 0,006 mg/l | 0.2 mg/l | 3 % | Single value · Netz Homberg |
| Sodium | 10,5 mg/l | 200 mg/l | 5 % | Single value · Netz Homberg |
* 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 (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 110,4 mg/l | — | — | Single value · Netz Homberg |
| Magnesium | 28,0 mg/l | — | — | Single value · Netz Homberg |
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.
Postcodes in this zone: 42579
Netz Ratingen
Stadtwerke RatingenAssigned 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 | 3,5 mg/l | 50 mg/l | 7 % | Single value · Netz Ratingen |
| Sodium | 36,3 mg/l | 200 mg/l | 18 % | Single value · Netz Ratingen |
Show all recorded parameters (8 — most recent value per parameter)
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 3,5 mg/l | 50 mg/l | 7 % | Single value · Netz Ratingen |
| Nitrite | <0,020 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value · Netz Ratingen |
* 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 (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | <0,020 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value · Netz Ratingen |
| Chloride | 56,0 mg/l | 250 mg/l | 22 % | Single value · Netz Ratingen |
| Iron | 0,021 mg/l | 0.2 mg/l | 11 % | Single value · Netz Ratingen |
| Sodium | 36,3 mg/l | 200 mg/l | 18 % | Single value · Netz Ratingen |
* 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 (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 93,8 mg/l | — | — | Single value · Netz Ratingen |
| Magnesium | 14,1 mg/l | — | — | Single value · Netz Ratingen |
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.
Postcodes in this zone: 42579
overath gesamt
BELKAWAssigned 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 |
|---|---|---|---|---|
| Sum of PFAS | 0,000014 mg/l | — | — | Single value |
| Nitrate | 19 mg/l | 50 mg/l | 38 % | Single value |
| Lead | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Escherichia coli (E. coli) | 0 /100 ml | 0/100 ml | — | Single value |
| Sulphate | 54 mg/l | 250 mg/l | 22 % | Single value |
| Sodium | 24 mg/l | 200 mg/l | 12 % | 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 (77 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 /100 ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 /100 ml | 0/100 ml | — | Single value |
Chemical parameters (24)
| 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 | <0,000003 mg/l below limit of quantification | 10 ng/l | < 30 % * | Single value |
| Bisphenol A | <0,00003 mg/l below limit of quantification | 2.5 µg/l | < 1 % * | Single value |
| Boron | 0,06 mg/l | 1 mg/l | 6 % | 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 | <0,05 mg/l below limit of quantification | 1.5 mg/l | < 3 % * | 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 | 19 mg/l | 50 mg/l | 38 % | Single value |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value |
| Pesticides | <0,0005 mg/l below limit of quantification | 0.1 µg/l | cannot be assessed — the limit of quantification of the measurement is above the parametric value | 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) | 0,0003 mg/l | 10 µg/l | 3 % | Single value |
| Trihalomethanes — Total | <0,0002 mg/l below limit of quantification | 50 µg/l | < 0.4 % * | Single value |
| Uranium | 0,0002 mg/l | 10 µg/l | 2 % | 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.
PFAS (22)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorobutane sulfonic acid (PFBS) | 0,0000043 mg/l | — | — | Single value |
| Perfluorobutanoic acid (PFBA) | 0,0000030 mg/l | — | — | Single value |
| Perfluorodecane sulfonic acid (PFDS) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluorodecanoic acid (PFDA) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluorododecane sulfonic acid (PFDoDS) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluorododecanoic acid (PFDoDA) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluoroheptane sulfonic acid (PFHpS) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluoroheptanoic acid (PFHpA) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluorohexane sulfonic acid (PFHxS) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluorohexanoic acid (PFHxA) | 0,0000032 mg/l | — | — | Single value |
| Perfluorononane sulfonic acid (PFNS) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluorononanoic acid (PFNA) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluorooctanesulfonic acid (PFOS) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluorooctanoic acid (PFOA) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluoropentanesulfonic acid (PFPeS) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluoropentanoic acid (PFPeA) | 0,0000031 mg/l | — | — | Single value |
| Perfluorotridecanesulfonic acid (PFTrDS) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluorotridecanoic acid (PFTrDA) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluoroundecanesulfonic acid (PFUnDS) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Perfluoroundecanoic acid (PFUnDA) | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Sum of 4 PFAS | <0,000001 mg/l below limit of quantification | — | — | Single value |
| Sum of PFAS | 0,000014 mg/l | — | — | Single value |
Indicator parameters (18)
| 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 | -1,8 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 44 mg/l | 250 mg/l | 18 % | Single value |
| Colony count 22 °C | 0 /ml | ohne anormale Veränderung | — | Single value |
| Colony count 36 °C | 0 /ml | ohne anormale Veränderung | — | Single value |
| Colour | <0,1 m-1 below limit of quantification | 0.5 m⁻¹ | — | Single value |
| Conductivity (25 °C) | 565 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | <0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Single value |
| Manganese | <0,001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Single value |
| Odour | ohne anormale Veränderung | für den Verbraucher annehmbar | — | Single value |
| pH | 7,59 | 6,5–9,5 | — | Single value |
| Sodium | 24 mg/l | 200 mg/l | 12 % | Single value |
| Sulphate | 54 mg/l | 250 mg/l | 22 % | Single value |
| Taste | ohne anormale Veränderung | für den Verbraucher annehmbar | — | Single value |
| Temperature | 12,6 °C | — | — | Single value |
| Total organic carbon (TOC) | 0,41 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | 0,05 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 (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 3,0 mol/m³ | — | — | Single value |
| Base capacity to pH 8.2 | 0,18 mol/m³ | — | — | Single value |
| Calcium | 69 mg/l | — | — | Single value |
| Carbonate hardness | 8,4 °dH | — | — | Single value |
| Hardness range (WRMG) | mittel | — | — | Single value |
| Hydrogen carbonate | 182 mg/l | — | — | Single value |
| Magnesium | 14 mg/l | — | — | Single value |
| Oxygen | 9 mg/l | — | — | Single value |
| Phosphate | 1,2 mg/l | — | — | Single value |
| Potassium | 2,5 mg/l | — | — | Single value |
| Total hardness | 12,8 °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.
Postcodes in this zone: 42579
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.
Postcodes in this zone: 42579
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.
Postcodes in this zone: 42579
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.
Postcodes in this zone: 42579
PFAS-4
BELKAWAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
No core values are available for this zone yet.
Show all recorded parameters (4 — most recent value per parameter)
PFAS (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS) | <0,000001 mg/l below limit of quantification | — | — | Single value · PFAS-4 |
| Perfluorononanoic acid (PFNA) | <0,000001 mg/l below limit of quantification | — | — | Single value · PFAS-4 |
| Perfluorooctanesulfonic acid (PFOS) | <0,000001 mg/l below limit of quantification | — | — | Single value · PFAS-4 |
| Perfluorooctanoic acid (PFOA) | <0,000001 mg/l below limit of quantification | — | — | Single value · PFAS-4 |
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.
Postcodes in this zone: 42579
Frequently asked questions about drinking water in Heiligenhaus
- How hard is the water in Heiligenhaus?
- RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbH publishes a total hardness of 13.5 °dH for the supply zone Dorsten-Holsterhausen (hardness range mittel). 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 Heiligenhaus?
- RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbH publishes a nitrate value of 9,6 mg/l for the supply zone Dorsten-Holsterhausen. The statutory parametric value is 50 mg/l; the measured value represents 19 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
- Who supplies the drinking water in Heiligenhaus?
- RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbH. The values shown here come from the supply zone Dorsten-Holsterhausen 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.