Drinking water in Roetgen
6 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
12 % Share of the parametric value. The proportion of the permitted maximum that the measured value uses — here 12 %, so just over an eighth.
< 10 % * Below the limit of quantification. The substance was not detectable. The mark shows where the detection limit lies relative to the parametric value — the actual share of the parametric value is below that.
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.
Härtebereich 1 (weich)
STAWAGAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
No date is given for these values. The water supplier publishes the analysis without a sampling date and without a report date. When the water was examined is not apparent from the source — we do not add a date and we do not estimate one. What is stated is therefore only when we retrieved the document.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 5 - 10 mg/l | 50 mg/l | — | Single value · Härtebereich 1 (weich) |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 1 (weich) |
| Escherichia coli (E. coli) | 0 Unit not stated in the document | 0/100 ml | — | Single value · Härtebereich 1 (weich) |
| Sulphate | 20 - 30 mg/l | 250 mg/l | — | Single value · Härtebereich 1 (weich) |
| Sodium | 10 - 20 mg/l | 200 mg/l | — | Single value · Härtebereich 1 (weich) |
* 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 (54 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Unit not stated in the document | 0/100 ml | — | Single value · Härtebereich 1 (weich) |
| Intestinal enterococci | 0 Unit not stated in the document | 0/100 ml | — | Single value · Härtebereich 1 (weich) |
Chemical parameters (28)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Single value · Härtebereich 1 (weich) |
| Acrylamide | <0,00001 mg/l below limit of quantification | 0.1 µg/l | < 10 % * | Single value · Härtebereich 1 (weich) |
| Antimony | < 0,002 mg/l below limit of quantification | 5 µg/l | < 40 % * | Single value · Härtebereich 1 (weich) |
| Arsenic | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 1 (weich) |
| Benzene | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value · Härtebereich 1 (weich) |
| Benzo(a)pyrene | <0,000002 mg/l below limit of quantification | 10 ng/l | < 20 % * | Single value · Härtebereich 1 (weich) |
| Bisphenol A | <0,000005 mg/l below limit of quantification | 2.5 µg/l | < 0.2 % * | Single value · Härtebereich 1 (weich) |
| Boron | <0,02 mg/l below limit of quantification | 1 mg/l | < 2 % * | Single value · Härtebereich 1 (weich) |
| Bromate | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 1 (weich) |
| Cadmium | < 0,001 mg/l below limit of quantification | 3 µg/l | < 33 % * | Single value · Härtebereich 1 (weich) |
| Chlorate | 0,03 - 0,05 mg/l | 70 µg/l | — | Single value · Härtebereich 1 (weich) |
| Chlorite | 0,06 - 0,15 mg/l | 0.2 mg/l | — | Single value · Härtebereich 1 (weich) |
| Chromium | < 0,001 mg/l below limit of quantification | 25 µg/l | < 4 % * | Single value · Härtebereich 1 (weich) |
| Copper | < 0,001 mg/l below limit of quantification | 2 mg/l | < < 0.1 % * | Single value · Härtebereich 1 (weich) |
| Cyanide | < 0,01 mg/l below limit of quantification | 50 µg/l | < 20 % * | Single value · Härtebereich 1 (weich) |
| Epichlorohydrin | <0,00003 mg/l below limit of quantification | 0.1 µg/l | < 30 % * | Single value · Härtebereich 1 (weich) |
| Fluoride | < 0,1 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Single value · Härtebereich 1 (weich) |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 1 (weich) |
| Mercury | < 0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value · Härtebereich 1 (weich) |
| Nickel | < 0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Single value · Härtebereich 1 (weich) |
| Nitrate | 5 - 10 mg/l | 50 mg/l | — | Single value · Härtebereich 1 (weich) |
| Nitrite | < 0,1 mg/l below limit of quantification | 0.5 mg/l | < 20 % * | Single value · Härtebereich 1 (weich) |
| Pesticides | *** mg/l not detectable | 0.1 µg/l | — | Single value · Härtebereich 1 (weich) |
| Polycyclic aromatic hydrocarbons | *** mg/l not detectable | 0.1 µg/l | — | Single value · Härtebereich 1 (weich) |
| Selenium | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 1 (weich) |
| Trihalomethanes — Total | <0,02 mg/l below limit of quantification | 50 µg/l | < 40 % * | Single value · Härtebereich 1 (weich) |
| Uranium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 1 (weich) |
| Vinyl chloride | <0,0001 mg/l below limit of quantification | 0.5 µg/l | < 20 % * | Single value · Härtebereich 1 (weich) |
* 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 (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 0,05 mg/l below limit of quantification | 0.2 mg/l | < 25 % * | Single value · Härtebereich 1 (weich) |
| Ammonium | <0,02 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value · Härtebereich 1 (weich) |
| Calcite dissolution capacity | <5 mg/l CaCO3 below limit of quantification | 5 mg/l CaCO3 | — | Single value · Härtebereich 1 (weich) |
| Chloride | 10 - 20 mg/l | 250 mg/l | — | Single value · Härtebereich 1 (weich) |
| Clostridium perfringens (including spores) | 0 Unit not stated in the document | 0/100 ml | — | Single value · Härtebereich 1 (weich) |
| Coliform bacteria | 0 Unit not stated in the document | 0/100 ml | — | Single value · Härtebereich 1 (weich) |
| Colony count 22 °C | 0 - 10 | ohne anormale Veränderung | — | Single value · Härtebereich 1 (weich) |
| Colony count 36 °C | 0 - 10 | ohne anormale Veränderung | — | Single value · Härtebereich 1 (weich) |
| Colour | 0,02 – 0,3 m-1 | 0.5 m⁻¹ | — | Single value · Härtebereich 1 (weich) |
| Conductivity (25 °C) | 180 - 320 µS/cm | 2,790 µS/cm | — | Single value · Härtebereich 1 (weich) |
| Iron | < 0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Single value · Härtebereich 1 (weich) |
| Manganese | < 0,001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Single value · Härtebereich 1 (weich) |
| Odour | ohne | für den Verbraucher annehmbar | — | Single value · Härtebereich 1 (weich) |
| pH | 8,0 - 9,0 - | 6,5–9,5 | — | Single value · Härtebereich 1 (weich) |
| Sodium | 10 - 20 mg/l | 200 mg/l | — | Single value · Härtebereich 1 (weich) |
| Sulphate | 20 - 30 mg/l | 250 mg/l | — | Single value · Härtebereich 1 (weich) |
| Taste | ohne | für den Verbraucher annehmbar | — | Single value · Härtebereich 1 (weich) |
| Total organic carbon (TOC) | 1,0 – 2,5 mg/l | ohne anormale Veränderung | — | Single value · Härtebereich 1 (weich) |
| Turbidity | 0,02 – 0,5 NTU | 1 NTU | — | Single value · Härtebereich 1 (weich) |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Treatment substances (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorine dioxide | <0,1 mg/l below limit of quantification | — | — | Single value · Härtebereich 1 (weich) |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 20 - 35 mg/l | — | — | Single value · Härtebereich 1 (weich) |
| Magnesium | 2 - 8 mg/l | — | — | Single value · Härtebereich 1 (weich) |
| Phosphate | <0,003 mg/l below limit of quantification | — | — | Single value · Härtebereich 1 (weich) |
| Potassium | 1 - 2 mg/l | — | — | Single value · Härtebereich 1 (weich) |
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.
Source: https://www.stawag.de/fileadmin/stawag/content/Dokumente/Wasser/Trinkwasseranalyse_Aachen_2024.pdf · retrieved on 25/07/2026
Postcodes in this zone: 52159
Show 5 more supply zones
Härtebereich 2 (mittel)
STAWAGAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
No date is given for these values. The water supplier publishes the analysis without a sampling date and without a report date. When the water was examined is not apparent from the source — we do not add a date and we do not estimate one. What is stated is therefore only when we retrieved the document.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 5 - 10 mg/l | 50 mg/l | — | Single value · Härtebereich 2 (mittel) |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 2 (mittel) |
| Escherichia coli (E. coli) | 0 Unit not stated in the document | 0/100 ml | — | Single value · Härtebereich 2 (mittel) |
| Sulphate | 20 - 60 mg/l | 250 mg/l | — | Single value · Härtebereich 2 (mittel) |
| Sodium | 10 - 20 mg/l | 200 mg/l | — | Single value · Härtebereich 2 (mittel) |
* 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 (54 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Unit not stated in the document | 0/100 ml | — | Single value · Härtebereich 2 (mittel) |
| Intestinal enterococci | 0 Unit not stated in the document | 0/100 ml | — | Single value · Härtebereich 2 (mittel) |
Chemical parameters (28)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Single value · Härtebereich 2 (mittel) |
| Acrylamide | <0,00001 mg/l below limit of quantification | 0.1 µg/l | < 10 % * | Single value · Härtebereich 2 (mittel) |
| Antimony | < 0,002 mg/l below limit of quantification | 5 µg/l | < 40 % * | Single value · Härtebereich 2 (mittel) |
| Arsenic | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 2 (mittel) |
| Benzene | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value · Härtebereich 2 (mittel) |
| Benzo(a)pyrene | <0,000002 mg/l below limit of quantification | 10 ng/l | < 20 % * | Single value · Härtebereich 2 (mittel) |
| Bisphenol A | <0,000005 mg/l below limit of quantification | 2.5 µg/l | < 0.2 % * | Single value · Härtebereich 2 (mittel) |
| Boron | <0,02 mg/l below limit of quantification | 1 mg/l | < 2 % * | Single value · Härtebereich 2 (mittel) |
| Bromate | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 2 (mittel) |
| Cadmium | < 0,001 mg/l below limit of quantification | 3 µg/l | < 33 % * | Single value · Härtebereich 2 (mittel) |
| Chlorate | <0,03 mg/l below limit of quantification | 70 µg/l | < 43 % * | Single value · Härtebereich 2 (mittel) |
| Chlorite | <0,06 mg/l below limit of quantification | 0.2 mg/l | < 30 % * | Single value · Härtebereich 2 (mittel) |
| Chromium | < 0,001 mg/l below limit of quantification | 25 µg/l | < 4 % * | Single value · Härtebereich 2 (mittel) |
| Copper | < 0,001 mg/l below limit of quantification | 2 mg/l | < < 0.1 % * | Single value · Härtebereich 2 (mittel) |
| Cyanide | < 0,01 mg/l below limit of quantification | 50 µg/l | < 20 % * | Single value · Härtebereich 2 (mittel) |
| Epichlorohydrin | <0,00003 mg/l below limit of quantification | 0.1 µg/l | < 30 % * | Single value · Härtebereich 2 (mittel) |
| Fluoride | < 0,1 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Single value · Härtebereich 2 (mittel) |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 2 (mittel) |
| Mercury | < 0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value · Härtebereich 2 (mittel) |
| Nickel | < 0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Single value · Härtebereich 2 (mittel) |
| Nitrate | 5 - 10 mg/l | 50 mg/l | — | Single value · Härtebereich 2 (mittel) |
| Nitrite | < 0,1 mg/l below limit of quantification | 0.5 mg/l | < 20 % * | Single value · Härtebereich 2 (mittel) |
| Pesticides | *** mg/l not detectable | 0.1 µg/l | — | Single value · Härtebereich 2 (mittel) |
| Polycyclic aromatic hydrocarbons | *** mg/l not detectable | 0.1 µg/l | — | Single value · Härtebereich 2 (mittel) |
| Selenium | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 2 (mittel) |
| Trihalomethanes — Total | <0,02 mg/l below limit of quantification | 50 µg/l | < 40 % * | Single value · Härtebereich 2 (mittel) |
| Uranium | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value · Härtebereich 2 (mittel) |
| Vinyl chloride | <0,0001 mg/l below limit of quantification | 0.5 µg/l | < 20 % * | Single value · Härtebereich 2 (mittel) |
* 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 (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 0,05 mg/l below limit of quantification | 0.2 mg/l | < 25 % * | Single value · Härtebereich 2 (mittel) |
| Ammonium | <0,02 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value · Härtebereich 2 (mittel) |
| Calcite dissolution capacity | <5 mg/l CaCO3 below limit of quantification | 5 mg/l CaCO3 | — | Single value · Härtebereich 2 (mittel) |
| Chloride | 15 - 40 mg/l | 250 mg/l | — | Single value · Härtebereich 2 (mittel) |
| Clostridium perfringens (including spores) | 0 Unit not stated in the document | 0/100 ml | — | Single value · Härtebereich 2 (mittel) |
| Coliform bacteria | 0 Unit not stated in the document | 0/100 ml | — | Single value · Härtebereich 2 (mittel) |
| Colony count 22 °C | 0 - 10 | ohne anormale Veränderung | — | Single value · Härtebereich 2 (mittel) |
| Colony count 36 °C | 0 - 10 | ohne anormale Veränderung | — | Single value · Härtebereich 2 (mittel) |
| Colour | 0,02 – 0,3 m-1 | 0.5 m⁻¹ | — | Single value · Härtebereich 2 (mittel) |
| Conductivity (25 °C) | 300 – 600 µS/cm | 2,790 µS/cm | — | Single value · Härtebereich 2 (mittel) |
| Iron | < 0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Single value · Härtebereich 2 (mittel) |
| Manganese | < 0,001 mg/l below limit of quantification | 50 µg/l | < 2 % * | Single value · Härtebereich 2 (mittel) |
| Odour | Ohne | für den Verbraucher annehmbar | — | Single value · Härtebereich 2 (mittel) |
| pH | 7,7 - 8,5 - | 6,5–9,5 | — | Single value · Härtebereich 2 (mittel) |
| Sodium | 10 - 20 mg/l | 200 mg/l | — | Single value · Härtebereich 2 (mittel) |
| Sulphate | 20 - 60 mg/l | 250 mg/l | — | Single value · Härtebereich 2 (mittel) |
| Taste | Ohne | für den Verbraucher annehmbar | — | Single value · Härtebereich 2 (mittel) |
| Total organic carbon (TOC) | 1,0 – 2,5 mg/l | ohne anormale Veränderung | — | Single value · Härtebereich 2 (mittel) |
| Turbidity | 0,02 – 0,5 NTU | 1 NTU | — | Single value · Härtebereich 2 (mittel) |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Treatment substances (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorine dioxide | <0,1 mg/l below limit of quantification | — | — | Single value · Härtebereich 2 (mittel) |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 35 - 70 mg/l | — | — | Single value · Härtebereich 2 (mittel) |
| Magnesium | 8 - 14 mg/l | — | — | Single value · Härtebereich 2 (mittel) |
| Phosphate | <0,003 mg/l below limit of quantification | — | — | Single value · Härtebereich 2 (mittel) |
| Potassium | 1 - 2 mg/l | — | — | Single value · Härtebereich 2 (mittel) |
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.
Source: https://www.stawag.de/fileadmin/stawag/content/Dokumente/Wasser/Trinkwasseranalyse_Aachen_2024.pdf · retrieved on 25/07/2026
Postcodes in this zone: 52159
Roetgen TW Netzeinspeisung
WAGAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
3.7 °dH
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | 0,000003 mg/l | — | — | Mean |
| Nitrate | <7 mg/l below limit of quantification | 50 mg/l | < 14 % * | Mean |
| Lead | <0,0002 mg/l below limit of quantification | 10 µg/l | < 2 % * | Mean |
| Sulphate | 24 mg/l | 250 mg/l | 10 % | Mean |
| Sodium | 13 mg/l | 200 mg/l | 7 % | 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 (100 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Intestinal enterococci | 0 1/100ml | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (67)
| 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 |
| 1,2-Dichloropropane | <0,00008 mg/l below limit of quantification | — | — | Mean |
| Acrylamide | <0,00001 mg/l below limit of quantification | 0.1 µg/l | < 10 % * | Mean |
| Aldrin | <0,00001 mg/l below limit of quantification | 30 ng/l | < 33 % * | Mean |
| Antimony | <0,0002 mg/l below limit of quantification | 5 µg/l | < 4 % * | Mean |
| Arsenic | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Mean |
| Atrazine | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Bentazone | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Benzene | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Mean |
| Benzo(a)pyrene | <0,002 µg/l below limit of quantification | 10 ng/l | < 20 % * | Mean |
| Benzo(b)fluoranthene | <0,005 µg/l below limit of quantification | — | — | Mean |
| Benzo(ghi)perylene | <0,005 µg/l below limit of quantification | — | — | Mean |
| Benzo(k)fluoranthene | <0,005 µg/l below limit of quantification | — | — | Mean |
| Bisphenol A | <0,000005 mg/l below limit of quantification | 2.5 µg/l | < 0.2 % * | Mean |
| Boron | 0,008 mg/l | 1 mg/l | 0.8 % | Mean |
| Bromate | <0,004 mg/l below limit of quantification | 10 µg/l | < 40 % * | Mean |
| Cadmium | <0,0005 mg/l below limit of quantification | 3 µg/l | < 17 % * | Mean |
| Carbofuran | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Chlorate | 0,022 mg/l | 70 µg/l | 31 % | Mean |
| Chloridazon | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Chlorite | 0,133 mg/l | 0.2 mg/l | 67 % | Mean |
| Chlorotoluron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Chromium | <0,005 mg/l below limit of quantification | 25 µg/l | < 20 % * | Mean |
| Clopyralid | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Copper | <0,005 mg/l below limit of quantification | 2 mg/l | < 0.3 % * | Mean |
| Dibromoacetic acid | <0,001 mg/l below limit of quantification | — | — | Mean |
| Dibromochloromethane | <0,2 µg/l below limit of quantification | — | — | Mean |
| Dicamba | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Dichloroacetic acid | <0,001 mg/l below limit of quantification | — | — | Mean |
| Dichloromethane | <5 µg/l below limit of quantification | — | — | Mean |
| Dichlorprop | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Dieldrin | <0,000002 mg/l below limit of quantification | 30 ng/l | < 7 % * | Mean |
| Diuron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Epichlorohydrin | <0,00003 mg/l below limit of quantification | 0.1 µg/l | < 30 % * | Mean |
| Fluoride | <0,6 mg/l below limit of quantification | 1.5 mg/l | < 40 % * | Mean |
| Heptachlor | <0,00001 mg/l below limit of quantification | 30 ng/l | < 33 % * | Mean |
| Heptachlor epoxide | <0,000002 mg/l below limit of quantification | 30 ng/l | < 7 % * | Mean |
| Hexazinone | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Isoproturon | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Lead | <0,0002 mg/l below limit of quantification | 10 µg/l | < 2 % * | Mean |
| Lindane | <0,00003 mg/l below limit of quantification | — | — | Mean |
| MCPA | <0,00002 mg/l below limit of quantification | — | — | Mean |
| Mecoprop | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Mercury | <0,0002 mg/l below limit of quantification | 1 µg/l | < 20 % * | Mean |
| Metazachlor | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Methabenzthiazuron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Metobromuron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Metolachlor | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Metoxuron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Monobromoacetic acid | <0,001 mg/l below limit of quantification | — | — | Mean |
| Monochloroacetic acid | <0,001 mg/l below limit of quantification | — | — | Mean |
| Monuron | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Nickel | <0,005 mg/l below limit of quantification | 20 µg/l | < 25 % * | Mean |
| Nitrate | <7 mg/l below limit of quantification | 50 mg/l | < 14 % * | Mean |
| Nitrite | <0,010 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Mean |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Mean |
| Simazine | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Terbuthylazine | <0,00003 mg/l below limit of quantification | — | — | Mean |
| Tetrachloroethene | <0,2 µg/l below limit of quantification | — | — | Mean |
| Tetrachloromethane | <0,2 µg/l below limit of quantification | — | — | Mean |
| Tribromomethane (bromoform) | <1 µg/l below limit of quantification | — | — | Mean |
| Trichloroacetic acid | <0,001 mg/l below limit of quantification | — | — | Mean |
| Trichloroethene | <0,2 µg/l below limit of quantification | — | — | Mean |
| Trichloromethane (chloroform) | 3,09 µg/l | — | — | Mean |
| Trihalomethanes — Total | 0,004 mg/l | 50 µg/l | 8 % | Mean |
| Uranium | <0,0002 mg/l below limit of quantification | 10 µg/l | < 2 % * | Mean |
| Vinyl chloride | <0,0001 mg/l below limit of quantification | 0.5 µg/l | < 20 % * | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
PFAS (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of 4 PFAS | 0,000000 mg/l | — | — | Mean |
| Sum of PFAS | 0,000003 mg/l | — | — | Mean |
Indicator parameters (13)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0,008 mg/l | 0.2 mg/l | 4 % | Mean |
| Ammonium | <0,030 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Mean |
| Chloride | 17 mg/l | 250 mg/l | 7 % | Mean |
| Clostridium perfringens (including spores) | 0 1/100ml | 0/100 ml | — | Maximum · Median 0 |
| Colony count 22 °C | 0 1/ml | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 1/ml | ohne anormale Veränderung | — | Mean |
| Iron | <0,006 mg/l below limit of quantification | 0.2 mg/l | < 3 % * | Mean |
| Manganese | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean |
| Sodium | 13 mg/l | 200 mg/l | 7 % | Mean |
| Sulphate | 24 mg/l | 250 mg/l | 10 % | Mean |
| Temperature | 9,2 °C | — | — | Mean |
| Total organic carbon (TOC) | 1,5 mg/l | ohne anormale Veränderung | — | Mean |
| Turbidity | <0,03 FNU below limit of quantification | 1 NTU | — | Mean |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Treatment substances (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorine dioxide | 0,06 mg/l | — | — | Mean |
| Total chlorine | 0,16 mg/l | — | — | Mean |
Further parameters (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 0,828 mmol/l | — | — | Mean |
| Barium | 0,012 mg/l | — | — | Mean |
| Calcium | 0,525 mmol/l | — | — | Mean |
| Carbonate hardness | 2,4 °dH | — | — | Mean |
| Hardness range (WRMG) | weich | — | — | Mean |
| Hydrogen carbonate | 52 mg/l | — | — | Mean |
| Magnesium | 0,127 mmol/l | — | — | Mean |
| Oxygen | 9,9 mg/l | — | — | Mean |
| Phosphate | <0,010 mg/l below limit of quantification | — | — | Mean |
| Potassium | 0,059 mmol/l | — | — | Mean |
| Saturation index | 0,29 - | — | — | Mean |
| Silicate / silicic acid | 2,1 mg/l | — | — | Mean |
| Sum of alkaline earth metals | 0,655 mmol/l | — | — | Mean |
| Total hardness | 3,7 °dH | — | — | Mean |
| Zinc | <0,010 mg/l below limit of quantification | — | — | 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.
Source: https://www.wag-nordeifel.de/fileadmin/wag/content/Dokumente/Roetgen-MinMax_2025-IV.pdf · 09.02.2026/Est · 01.01.2025 bis 31.12.2025 · retrieved on 13/07/2026
Postcodes in this zone: 52159
Roetgen TW Netzeinspeisung / Filterwerk 52159 Roetgen
WAGAssigned 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 | 0,000003 | — | — | Mean |
| Nitrate | <7 below limit of quantification Unit not stated in the document | 50 mg/l | — | Mean |
| Lead | <0,0002 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
| Sulphate | 24 Unit not stated in the document | 250 mg/l | — | Mean |
| Sodium | 13 Unit not stated in the document | 200 mg/l | — | Mean |
Show all recorded parameters (99 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Intestinal enterococci | 0 Unit not stated in the document | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (67)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0003 below limit of quantification Unit not stated in the document | 3 µg/l | — | Mean |
| 1,2-Dichloropropane | <0,00008 below limit of quantification | — | — | Mean |
| Acrylamide | <0,00001 below limit of quantification Unit not stated in the document | 0.1 µg/l | — | Mean |
| Aldrin | <0,00001 below limit of quantification Unit not stated in the document | 30 ng/l | — | Mean |
| Antimony | <0,0002 below limit of quantification Unit not stated in the document | 5 µg/l | — | Mean |
| Arsenic | <0,0005 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
| Atrazine | <0,00003 below limit of quantification | — | — | Mean |
| Bentazone | <0,00002 below limit of quantification | — | — | Mean |
| Benzene | <0,0001 below limit of quantification Unit not stated in the document | 1 µg/l | — | Mean |
| Benzo(a)pyrene | <0,002 below limit of quantification Unit not stated in the document | 10 ng/l | — | Mean |
| Benzo(b)fluoranthene | <0,005 below limit of quantification | — | — | Mean |
| Benzo(ghi)perylene | <0,005 below limit of quantification | — | — | Mean |
| Benzo(k)fluoranthene | <0,005 below limit of quantification | — | — | Mean |
| Bisphenol A | <0,000005 below limit of quantification Unit not stated in the document | 2.5 µg/l | — | Mean |
| Boron | 0,008 Unit not stated in the document | 1 mg/l | — | Mean |
| Bromate | <0,004 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
| Cadmium | <0,0005 below limit of quantification Unit not stated in the document | 3 µg/l | — | Mean |
| Carbofuran | <0,00003 below limit of quantification | — | — | Mean |
| Chlorate | 0,022 Unit not stated in the document | 70 µg/l | — | Mean |
| Chloridazon | <0,00003 below limit of quantification | — | — | Mean |
| Chlorite | 0,133 Unit not stated in the document | 0.2 mg/l | — | Mean |
| Chlorotoluron | <0,00003 below limit of quantification | — | — | Mean |
| Chromium | <0,005 below limit of quantification Unit not stated in the document | 25 µg/l | — | Mean |
| Clopyralid | <0,00003 below limit of quantification | — | — | Mean |
| Copper | <0,005 below limit of quantification Unit not stated in the document | 2 mg/l | — | Mean |
| Dibromoacetic acid | <0,001 below limit of quantification | — | — | Mean |
| Dibromochloromethane | <0,2 below limit of quantification | — | — | Mean |
| Dicamba | <0,00003 below limit of quantification | — | — | Mean |
| Dichloroacetic acid | <0,001 below limit of quantification | — | — | Mean |
| Dichloromethane | <5 below limit of quantification | — | — | Mean |
| Dichlorprop | <0,00003 below limit of quantification | — | — | Mean |
| Dieldrin | <0,000002 below limit of quantification Unit not stated in the document | 30 ng/l | — | Mean |
| Diuron | <0,00003 below limit of quantification | — | — | Mean |
| Epichlorohydrin | <0,00003 below limit of quantification Unit not stated in the document | 0.1 µg/l | — | Mean |
| Fluoride | <0,6 below limit of quantification Unit not stated in the document | 1.5 mg/l | — | Mean |
| Heptachlor | <0,00001 below limit of quantification Unit not stated in the document | 30 ng/l | — | Mean |
| Heptachlor epoxide | <0,000002 below limit of quantification Unit not stated in the document | 30 ng/l | — | Mean |
| Hexazinone | <0,00003 below limit of quantification | — | — | Mean |
| Isoproturon | <0,00003 below limit of quantification | — | — | Mean |
| Lead | <0,0002 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
| Lindane | <0,00003 below limit of quantification | — | — | Mean |
| MCPA | <0,00002 below limit of quantification | — | — | Mean |
| Mecoprop | <0,00003 below limit of quantification | — | — | Mean |
| Mercury | <0,0002 below limit of quantification Unit not stated in the document | 1 µg/l | — | Mean |
| Metazachlor | <0,00003 below limit of quantification | — | — | Mean |
| Methabenzthiazuron | <0,00003 below limit of quantification | — | — | Mean |
| Metobromuron | <0,00003 below limit of quantification | — | — | Mean |
| Metolachlor | <0,00003 below limit of quantification | — | — | Mean |
| Metoxuron | <0,00003 below limit of quantification | — | — | Mean |
| Monobromoacetic acid | <0,001 below limit of quantification | — | — | Mean |
| Monochloroacetic acid | <0,001 below limit of quantification | — | — | Mean |
| Monuron | <0,00003 below limit of quantification | — | — | Mean |
| Nickel | <0,005 below limit of quantification Unit not stated in the document | 20 µg/l | — | Mean |
| Nitrate | <7 below limit of quantification Unit not stated in the document | 50 mg/l | — | Mean |
| Nitrite | <0,010 below limit of quantification Unit not stated in the document | 0.5 mg/l | — | Mean |
| Selenium | <0,001 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
| Simazine | <0,00003 below limit of quantification | — | — | Mean |
| Terbuthylazine | <0,00003 below limit of quantification | — | — | Mean |
| Tetrachloroethene | <0,2 below limit of quantification | — | — | Mean |
| Tetrachloromethane | <0,2 below limit of quantification | — | — | Mean |
| Tribromomethane (bromoform) | <1 below limit of quantification | — | — | Mean |
| Trichloroacetic acid | <0,001 below limit of quantification | — | — | Mean |
| Trichloroethene | <0,2 below limit of quantification | — | — | Mean |
| Trichloromethane (chloroform) | 3,09 | — | — | Mean |
| Trihalomethanes — Total | 0,004 Unit not stated in the document | 50 µg/l | — | Mean |
| Uranium | <0,0002 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
| Vinyl chloride | <0,0001 below limit of quantification Unit not stated in the document | 0.5 µg/l | — | Mean |
PFAS (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of 4 PFAS | 0,000000 | — | — | Mean |
| Sum of PFAS | 0,000003 | — | — | Mean |
Indicator parameters (13)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0,008 Unit not stated in the document | 0.2 mg/l | — | Mean |
| Ammonium | <0,030 below limit of quantification Unit not stated in the document | 0.5 mg/l | — | Mean |
| Chloride | 17 Unit not stated in the document | 250 mg/l | — | Mean |
| Clostridium perfringens (including spores) | 0 Unit not stated in the document | 0/100 ml | — | Maximum · Median 0 |
| Colony count 22 °C | 0 | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 | ohne anormale Veränderung | — | Mean |
| Iron | <0,006 below limit of quantification Unit not stated in the document | 0.2 mg/l | — | Mean |
| Manganese | <0,005 below limit of quantification Unit not stated in the document | 50 µg/l | — | Mean |
| Sodium | 13 Unit not stated in the document | 200 mg/l | — | Mean |
| Sulphate | 24 Unit not stated in the document | 250 mg/l | — | Mean |
| Temperature | 9,2 | — | — | Mean |
| Total organic carbon (TOC) | 1,5 | ohne anormale Veränderung | — | Mean |
| Turbidity | <0,03 below limit of quantification Unit not stated in the document | 1 NTU | — | Mean |
Treatment substances (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorine dioxide | 0,06 | — | — | Mean |
| Total chlorine | 0,16 | — | — | Mean |
Further parameters (14)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 0,828 | — | — | Mean |
| Barium | 0,012 | — | — | Mean |
| Calcium | 0,525 | — | — | Mean |
| Carbonate hardness | 2,4 | — | — | Mean |
| Hydrogen carbonate | 52 | — | — | Mean |
| Magnesium | 0,127 | — | — | Mean |
| Oxygen | 9,9 | — | — | Mean |
| Phosphate | <0,010 below limit of quantification | — | — | Mean |
| Potassium | 0,059 | — | — | Mean |
| Saturation index | 0,29 | — | — | Mean |
| Silicate / silicic acid | 2,1 | — | — | Mean |
| Sum of alkaline earth metals | 0,655 | — | — | Mean |
| Total hardness | 3,7 | — | — | Mean |
| Zinc | <0,010 below limit of quantification | — | — | 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.
Source: https://www.stawag.de/fileadmin/stawag/content/Dokumente/Wasser/Roetgen-MinMax_2025-IV.pdf · 09.02.2026 · 01.01.2025 bis 31.12.2025 · retrieved on 13/07/2026
Postcodes in this zone: 52159
Wasserversorger
enwor – energie & wasser vor ort GmbH (Wasserwerke Stolberg: Roetgen, Wehe, Binsfeldhammer)Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
No date is given for these values. The water supplier publishes the analysis without a sampling date and without a report date. When the water was examined is not apparent from the source — we do not add a date and we do not estimate one. What is stated is therefore only when we retrieved the document.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 5 mg/l | 50 mg/l | 10 % | Mean · Wasserversorger |
| Lead | < 0.002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Mean · Wasserversorger |
| Sodium | 12.4 mg/l | 200 mg/l | 6 % | Mean · Wasserversorger |
* 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 (6 — most recent value per parameter)
Chemical parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Copper | < 0.001 mg/l below limit of quantification | 2 mg/l | < < 0.1 % * | Mean · Wasserversorger |
| Lead | < 0.002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Mean · Wasserversorger |
| Nickel | < 0.002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Mean · Wasserversorger |
| Nitrate | 5 mg/l | 50 mg/l | 10 % | Mean · Wasserversorger |
* 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 (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sodium | 12.4 mg/l | 200 mg/l | 6 % | Mean · Wasserversorger |
Further parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Total hardness | 3.5 | — | — | Mean · Wasserversorger |
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.
Source: https://xn--wasserqualitt-mfb.ivario.com/stolberg.php · retrieved on 13/07/2026
Postcodes in this zone: 52159
Wasserwerksausgang
Wasserversorgungszweckverband PerlenbachAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
3.9 °dH
Hardness range 1
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | n.n. µg/L not detectable | — | — | Mean |
| Nitrate | 1,9 mg/L | 50 mg/l | 4 % | Single value · 18.11.2025 |
| Lead | <0,003 mg/L below limit of quantification | 10 µg/l | < 30 % * | Single value · 18.11.2025 |
| Escherichia coli (E. coli) | 0 MPN/100 mL | 0/100 ml | — | Maximum |
| Sulphate | 6,2 mg/L | 250 mg/l | 2 % | Single value · 18.11.2025 |
| Sodium | 4,1 mg/L | 200 mg/l | 2 % | Single value · 18.11.2025 |
* 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 (122 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 MPN/100 mL | 0/100 ml | — | Maximum |
| Intestinal enterococci | 0 KBE/100 mL | 0/100 ml | — | Maximum |
| Somatic coliphages | 0 PFU/100 mL | 50/100 ml UBA guide value | — | Mean |
For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.
Chemical parameters (69)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0007 mg/L below limit of quantification | 3 µg/l | < 23 % * | Single value · 18.11.2025 |
| 1,2-Dichloropropane | < 0,08 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| 2,4-D | < 0,02 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Acrylamide | <0,00003 mg/L below limit of quantification | 0.1 µg/l | < 30 % * | Single value · 18.11.2025 |
| Alachlor | < 0,01 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Antimony | <0,001 mg/L below limit of quantification | 5 µg/l | < 20 % * | Single value · 18.11.2025 |
| Arsenic | <0,001 mg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · 18.11.2025 |
| Atrazine | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Bentazone | < 0,02 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Benzene | <0,00005 mg/L below limit of quantification | 1 µg/l | < 5 % * | Single value · 18.11.2025 |
| Benzo(a)pyrene | <0,000002 mg/L below limit of quantification | 10 ng/l | < 20 % * | Single value · 18.11.2025 |
| Benzo(b)fluoranthene | <0,000005 mg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Benzo(ghi)perylene | <0,000005 mg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Benzo(k)fluoranthene | <0,000005 mg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Bisphenol A | <0,000010 mg/L below limit of quantification | 2.5 µg/l | < 0.4 % * | Single value · 18.11.2025 |
| Boron | <0,01 mg/L below limit of quantification | 1 mg/l | < 1 % * | Single value · 18.11.2025 |
| Bromacil | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Bromate | <0,001 mg/L below limit of quantification | 10 µg/l | < 10 % * | Single value · 18.11.2025 |
| Bromodichloromethane | 0,0019 mg/L | — | — | Single value · 18.11.2025 |
| Cadmium | <0,0003 mg/L below limit of quantification | 3 µg/l | < 10 % * | Single value · 18.11.2025 |
| Carbofuran | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Chlorfenvinphos | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Chloridazon | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Chlorotoluron | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Chromium | <0,0005 mg/L below limit of quantification | 25 µg/l | < 2 % * | Single value · 18.11.2025 |
| Clopyralid | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Copper | <0,005 mg/L below limit of quantification | 2 mg/l | < 0.3 % * | Single value · 18.11.2025 |
| Cyanide | <0,005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Single value · 18.11.2025 |
| Dibromoacetic acid | <0,001 mg/L below limit of quantification | — | — | Mean |
| Dibromochloromethane | 0,001 mg/L | — | — | Single value · 18.11.2025 |
| Dicamba | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Dichloroacetic acid | <0,001 mg/L below limit of quantification | — | — | Mean |
| Dichlorprop | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Diuron | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Epichlorohydrin | <0,00003 mg/L below limit of quantification | 0.1 µg/l | < 30 % * | Single value · 18.11.2025 |
| Fluoride | 0,05 mg/L | 1.5 mg/l | 3 % | Single value · 18.11.2025 |
| Haloacetic acids (HAA) | n.n. mg/L not detectable | — | — | Mean |
| Hexazinone | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Isoproturon | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Lead | <0,003 mg/L below limit of quantification | 10 µg/l | < 30 % * | Single value · 18.11.2025 |
| Lindane | < 0,005 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| MCPA | < 0,02 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Mecoprop | < 0,02 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Mercury | <0,0001 mg/L below limit of quantification | 1 µg/l | < 10 % * | Single value · 18.11.2025 |
| Metazachlor | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Methabenzthiazuron | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Metobromuron | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Metolachlor | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Metoxuron | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Microcystin-LR | <0,00007 mg/L below limit of quantification | — | — | Mean |
| Monobromoacetic acid | <0,001 mg/L below limit of quantification | — | — | Mean |
| Monochloroacetic acid | <0,003 mg/L below limit of quantification | — | — | Mean |
| Monuron | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Nickel | <0,002 mg/L below limit of quantification | 20 µg/l | < 10 % * | Single value · 18.11.2025 |
| Nitrate | 1,9 mg/L | 50 mg/l | 4 % | Single value · 18.11.2025 |
| Nitrite | <0,05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Mean |
| Polycyclic aromatic hydrocarbons | n.b. mg/L not determined | 0.1 µg/l | — | Single value · 18.11.2025 |
| Propazine | < 0,02 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Selenium | <0,003 mg/L below limit of quantification | 10 µg/l | < 30 % * | Single value · 18.11.2025 |
| Simazine | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Terbuthylazine | < 0,03 µg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Tetrachloroethene | <0,0003 mg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Tribromomethane (bromoform) | 0,0002 mg/L | — | — | Single value · 18.11.2025 |
| Trichloroacetic acid | <0,001 mg/L below limit of quantification | — | — | Mean |
| Trichloroethene | <0,0003 mg/L below limit of quantification | — | — | Single value · 18.11.2025 |
| Trichloromethane (chloroform) | 0,003 mg/L | — | — | Single value · 18.11.2025 |
| Trihalomethanes — Total | 0,0061 mg/L | 50 µg/l | 12 % | Single value · 18.11.2025 |
| Uranium | <0,0001 mg/L below limit of quantification | 10 µg/l | < 1 % * | Single value · 18.11.2025 |
| Vinyl chloride | <0,00005 mg/L below limit of quantification | 0.5 µg/l | < 10 % * | Single value · 18.11.2025 |
* 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 (21)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorobutane sulfonic acid (PFBS) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorobutanoic acid (PFBA) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorodecane sulfonic acid (PFDS) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorodecanoic acid (PFDA) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorododecane sulfonic acid (PFDoDS) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorododecanoic acid (PFDoDA) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluoroheptane sulfonic acid (PFHpS) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluoroheptanoic acid (PFHpA) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorohexane sulfonic acid (PFHxS) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorohexanoic acid (PFHxA) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorononane sulfonic acid (PFNS) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorononanoic acid (PFNA) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorooctanesulfonic acid (PFOS) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorooctanoic acid (PFOA) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluoropentanesulfonic acid (PFPeS) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluoropentanoic acid (PFPeA) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorotridecanesulfonic acid (PFTrDS) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluorotridecanoic acid (PFTrDA) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluoroundecanesulfonic acid (PFUnDS) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Perfluoroundecanoic acid (PFUnDA) | <0,0010 µg/L below limit of quantification | — | — | Mean |
| Sum of PFAS | n.n. µg/L not detectable | — | — | Mean |
Indicator parameters (17)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,01 mg/L below limit of quantification | 0.2 mg/l | < 5 % * | Single value · 18.11.2025 |
| Ammonium | <0,02 mg/L below limit of quantification | 0.5 mg/l | < 4 % * | Single value · 18.11.2025 |
| Chloride | 22 mg/L | 250 mg/l | 9 % | Single value · 18.11.2025 |
| Clostridium perfringens (including spores) | 0 KBE/100 mL | 0/100 ml | — | Maximum |
| Coliform bacteria | 0 MPN/100 mL | 0/100 ml | — | Maximum |
| Colony count 22 °C | 0 KBE/mL | ohne anormale Veränderung | — | Single value · 18.11.2025 |
| Colour | <0,05 1/m below limit of quantification | 0.5 m⁻¹ | — | Single value · 18.11.2025 |
| Conductivity (25 °C) | 164 µS/cm | 2,790 µS/cm | — | Single value · 18.11.2025 |
| Iron | <0,01 mg/L below limit of quantification | 0.2 mg/l | < 5 % * | Single value · 18.11.2025 |
| Manganese | <0,005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Single value · 18.11.2025 |
| Odour | ohne | für den Verbraucher annehmbar | — | Single value · 18.11.2025 |
| pH | 8,62 | 6,5–9,5 | — | Single value · 18.11.2025 |
| Sodium | 4,1 mg/L | 200 mg/l | 2 % | Single value · 18.11.2025 |
| Sulphate | 6,2 mg/L | 250 mg/l | 2 % | Single value · 18.11.2025 |
| Temperature | 8,5 °C | — | — | Mean |
| Total organic carbon (TOC) | 0,58 mg/L | ohne anormale Veränderung | — | Single value · 18.11.2025 |
| Turbidity | <0,050 NTU below limit of quantification | 1 NTU | — | Single value · 18.11.2025 |
* 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.
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Indicative dose | not determined Unit not stated in the document | 0.1 mSv/a | — | Single value |
| Radon-222 | <10 Bq/L below limit of quantification | 100 Bq/l | — | Single value · 17.12.2018 |
Treatment substances (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Free chlorine | 0,21 mg/L | — | — | Mean |
| Total chlorine | 0,22 mg/L | — | — | Mean |
Further parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 0,42 mmol/L | — | — | Mean |
| Carbonate hardness | 2,1 °dH | — | — | Mean |
| Hardness range (WRMG) | 1 | — | — | Mean |
| Hydrogen carbonate | 45,8 mg/L | — | — | Mean |
| Magnesium | 0,21 mmol/L | — | — | Mean |
| Potassium | 0,02 mmol/L | — | — | Mean |
| Spectral absorption coefficient 254 nm (SAC 254) | 1,0 1/m | — | — | Mean |
| Total hardness | 3,9 °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.
Source: https://www.wasserwerk-perlenbach.de/cms/module/2388/download/979/ · Jahr 2025 (Einzelanalyse vom 18.11.2025); Anlage 4.I: Jahr 2018, Analyse vom 17.12.2018 · retrieved on 19/08/2026
Postcodes in this zone: 52159
Frequently asked questions about drinking water in Roetgen
- Who supplies the drinking water in Roetgen?
- STAWAG. The values shown here come from the supply zone Härtebereich 1 (weich) 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.