Drinking water in Aachen-Süd
4 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)
Stadtwerke Aachen AGAssigned 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 | 10 mg/l | 50 mg/l | 20 % | Maximum · 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 | 30 mg/l | 250 mg/l | 12 % | Maximum · Härtebereich 1 (weich) |
| Sodium | 20 mg/l | 200 mg/l | 10 % | Maximum · 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 | 0,05 mg/l | 70 µg/l | 71 % | Maximum · Härtebereich 1 (weich) |
| Chlorite | 0,15 mg/l | 0.2 mg/l | 75 % | Maximum · 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 | 10 mg/l | 50 mg/l | 20 % | Maximum · 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 determined | 0.1 µg/l | — | Single value · Härtebereich 1 (weich) |
| Polycyclic aromatic hydrocarbons | *** mg/l not determined | 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 | 20 mg/l | 250 mg/l | 8 % | Maximum · 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 | 10 | ohne anormale Veränderung | — | Maximum · Härtebereich 1 (weich) |
| Colony count 36 °C | 10 | ohne anormale Veränderung | — | Maximum · Härtebereich 1 (weich) |
| Colour | 0,3 m-1 | 0.5 m⁻¹ | — | Maximum · Härtebereich 1 (weich) |
| Conductivity (25 °C) | 320 µS/cm | 2,790 µS/cm | — | Maximum · 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 | 9,0 - | 6,5–9,5 | — | Maximum · Härtebereich 1 (weich) |
| Sodium | 20 mg/l | 200 mg/l | 10 % | Maximum · Härtebereich 1 (weich) |
| Sulphate | 30 mg/l | 250 mg/l | 12 % | Maximum · Härtebereich 1 (weich) |
| Taste | ohne | für den Verbraucher annehmbar | — | Single value · Härtebereich 1 (weich) |
| Total organic carbon (TOC) | 2,5 mg/l | ohne anormale Veränderung | — | Maximum · Härtebereich 1 (weich) |
| Turbidity | 0,5 NTU | 1 NTU | — | Maximum · 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 | 35 mg/l | — | — | Maximum · Härtebereich 1 (weich) |
| Magnesium | 8 mg/l | — | — | Maximum · Härtebereich 1 (weich) |
| Phosphate | <0,003 mg/l below limit of quantification | — | — | Single value · Härtebereich 1 (weich) |
| Potassium | 2 mg/l | — | — | Maximum · 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 11/07/2026
Postcodes in this zone: 52076
Show 3 more supply zones
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 determined | 0.1 µg/l | — | Single value · Härtebereich 1 (weich) |
| Polycyclic aromatic hydrocarbons | *** mg/l not determined | 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: 52076
Härtebereich 2 (mittel)
Stadtwerke Aachen AGAssigned 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 | 10 mg/l | 50 mg/l | 20 % | Maximum · 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 | 60 mg/l | 250 mg/l | 24 % | Maximum · Härtebereich 2 (mittel) |
| Sodium | 20 mg/l | 200 mg/l | 10 % | Maximum · 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 | 10 mg/l | 50 mg/l | 20 % | Maximum · 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 determined | 0.1 µg/l | — | Single value · Härtebereich 2 (mittel) |
| Polycyclic aromatic hydrocarbons | *** mg/l not determined | 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 | 40 mg/l | 250 mg/l | 16 % | Maximum · 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 | 10 | ohne anormale Veränderung | — | Maximum · Härtebereich 2 (mittel) |
| Colony count 36 °C | 10 | ohne anormale Veränderung | — | Maximum · Härtebereich 2 (mittel) |
| Colour | 0,3 m-1 | 0.5 m⁻¹ | — | Maximum · Härtebereich 2 (mittel) |
| Conductivity (25 °C) | 600 µS/cm | 2,790 µS/cm | — | Maximum · 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 | 8,5 - | 6,5–9,5 | — | Maximum · Härtebereich 2 (mittel) |
| Sodium | 20 mg/l | 200 mg/l | 10 % | Maximum · Härtebereich 2 (mittel) |
| Sulphate | 60 mg/l | 250 mg/l | 24 % | Maximum · Härtebereich 2 (mittel) |
| Taste | Ohne | für den Verbraucher annehmbar | — | Single value · Härtebereich 2 (mittel) |
| Total organic carbon (TOC) | 2,5 mg/l | ohne anormale Veränderung | — | Maximum · Härtebereich 2 (mittel) |
| Turbidity | 0,5 NTU | 1 NTU | — | Maximum · 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 | 70 mg/l | — | — | Maximum · Härtebereich 2 (mittel) |
| Magnesium | 14 mg/l | — | — | Maximum · Härtebereich 2 (mittel) |
| Phosphate | <0,003 mg/l below limit of quantification | — | — | Single value · Härtebereich 2 (mittel) |
| Potassium | 2 mg/l | — | — | Maximum · 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 11/07/2026
Postcodes in this zone: 52076
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 determined | 0.1 µg/l | — | Single value · Härtebereich 2 (mittel) |
| Polycyclic aromatic hydrocarbons | *** mg/l not determined | 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: 52076
Frequently asked questions about drinking water in Aachen-Süd
- How much nitrate is in the drinking water in Aachen-Süd?
- Stadtwerke Aachen AG publishes a nitrate value of 10 mg/l for the supply zone Härtebereich 1 (weich). The statutory parametric value is 50 mg/l; the measured value represents 20 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
- Who supplies the drinking water in Aachen-Süd?
- Stadtwerke Aachen AG. 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.