Drinking water in Norderstedt
3 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.
Wasserwerk Friedrichsgabe
Stadtwerke NorderstedtAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 03/04/2025. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.
Water hardness
11.6 °dH
Hardness range mittel
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <0,5 (+) mg/l below limit of quantification | 50 mg/l | < 1 % * | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Sulphate | 72 mg/l | 250 mg/l | 29 % | Single value |
| Sodium | 16,5 mg/l | 200 mg/l | 8 % | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (79 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Single value |
Chemical parameters (32)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0005 mg/l below limit of quantification | 3 µg/l | < 17 % * | Single value |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Single value |
| Arsenic | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Benzene | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Benzo(a)pyrene | <0,000002 mg/l below limit of quantification | 10 ng/l | < 20 % * | Single value |
| Benzo(b)fluoranthene | <0,000002 mg/l below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | <0,000002 mg/l below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | <0,000002 mg/l below limit of quantification | — | — | Single value |
| Boron | 0,0240 mg/l | 1 mg/l | 2 % | Single value |
| Bromate | 0,00021 mg/l | 10 µg/l | 2 % | Single value |
| Bromodichloromethane | <0,00020 mg/l below limit of quantification | — | — | Single value |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Single value |
| Chromium | <0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Single value |
| Copper | <0,003 mg/l below limit of quantification | 2 mg/l | < 0.2 % * | Single value |
| Cyanide | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Single value |
| Dibromochloromethane | <0,00020 mg/l below limit of quantification | — | — | Single value |
| Fluoride | 0,11 mg/l | 1.5 mg/l | 7 % | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Single value |
| Nitrate | <0,5 (+) mg/l below limit of quantification | 50 mg/l | < 1 % * | Single value |
| Nitrite | <0,001 (NWG) mg/l not detectable | 0.5 mg/l | — | Single value |
| Polycyclic aromatic hydrocarbons | n.b. mg/l not determined | 0.1 µg/l | — | Single value |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Tetrachloroethene | <0,00010 mg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene and Trichloroethene (sum) | 0,00041 mg/l | 10 µg/l | 4 % | Single value |
| Tribromomethane (bromoform) | <0,00030 mg/l below limit of quantification | — | — | Single value |
| Trichloroethene | 0,00041 mg/l | — | — | Single value |
| Trichloromethane (chloroform) | <0,00010 mg/l below limit of quantification | — | — | Single value |
| Trihalomethanes — Total | n.b. mg/l not determined | 50 µg/l | — | Single value |
| Uranium | <0,01 µg/l below limit of quantification | 10 µg/l | < 0.1 % * | Single value |
| Vinyl chloride | <0,0001 mg/l below limit of quantification | 0.5 µg/l | < 20 % * | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
PFAS (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorobutane sulfonic acid (PFBS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorobutanoic acid (PFBA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorodecane sulfonic acid (PFDS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorodecanoic acid (PFDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorododecanoic acid (PFDoDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoroheptane sulfonic acid (PFHpS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoroheptanoic acid (PFHpA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorohexane sulfonic acid (PFHxS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorohexanoic acid (PFHxA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorononane sulfonic acid (PFNS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorononanoic acid (PFNA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorooctanesulfonic acid (PFOS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorooctanoic acid (PFOA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoropentanesulfonic acid (PFPeS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoropentanoic acid (PFPeA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorotridecanesulfonic acid (PFTrDS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorotridecanoic acid (PFTrDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoroundecanoic acid (PFUnDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
Indicator parameters (17)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0,01 mg/l | 0.2 mg/l | 5 % | Single value |
| Ammonium | <0,005 (NWG) mg/l not detectable | 0.5 mg/l | — | Single value |
| Calcite dissolution capacity | 0 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 29 mg/l | 250 mg/l | 12 % | Single value |
| Coliform bacteria | 0 KBE/100ml | 0/100 ml | — | Single value |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Single value |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Single value |
| Conductivity (25 °C) | 476 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | <0,003 (NWG) mg/l not detectable | 0.2 mg/l | — | Single value |
| Manganese | <0,002 (NWG) mg/l not detectable | 50 µg/l | — | Single value |
| Odour | ohne | für den Verbraucher annehmbar | — | Single value |
| pH | 7,95 | 6,5–9,5 | — | Single value |
| Sodium | 16,5 mg/l | 200 mg/l | 8 % | Single value |
| Sulphate | 72 mg/l | 250 mg/l | 29 % | Single value |
| Temperature | 21,3 °C | — | — | Single value |
| Total organic carbon (TOC) | 1,3 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | 0,06 NTU | 1 NTU | — | Single value |
Further parameters (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,57 mmol/l | — | — | Single value |
| Base capacity to pH 8.2 | 0,20 mmol/l | — | — | Single value |
| Calcium | 74,2 mg/l | — | — | Single value |
| Carbonate hardness | 7,1 °dH | — | — | Single value |
| Free carbon dioxide | 6,7 mg/l | — | — | Single value |
| Hardness range (WRMG) | mittel | — | — | Single value |
| Hydrogen carbonate | 153,8 mg/l | — | — | Single value |
| Magnesium | 5,39 mg/l | — | — | Single value |
| Potassium | 1,74 mg/l | — | — | Single value |
| Total hardness | 2,07 mmol/l | — | — | Single value |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://www.stadtwerke-norderstedt.de/fileadmin/user_upload/Dokumente/Wasser/2025/04.25_WWF_Gruppe_AB.pdf · 29.04.2025 · Probenahme 03.04.2025 · retrieved on 11/07/2026
Postcodes in this zone: 22844 , 22846 , 22848 , 22850 , 22851
Show 2 more supply zones
Wasserwerk Garstedt
Stadtwerke NorderstedtAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 03/04/2025. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.
Water hardness
12.7 °dH
Hardness range mittel
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 0,834 mg/l | 50 mg/l | 2 % | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Sulphate | 39 mg/l | 250 mg/l | 16 % | Single value |
| Sodium | 10,2 mg/l | 200 mg/l | 5 % | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (79 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Single value |
Chemical parameters (32)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0005 mg/l below limit of quantification | 3 µg/l | < 17 % * | Single value |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Single value |
| Arsenic | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Benzene | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Benzo(a)pyrene | <0,000002 mg/l below limit of quantification | 10 ng/l | < 20 % * | Single value |
| Benzo(b)fluoranthene | <0,000002 mg/l below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | <0,000002 mg/l below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | <0,000002 mg/l below limit of quantification | — | — | Single value |
| Boron | 0,0295 mg/l | 1 mg/l | 3 % | Single value |
| Bromate | 0,00024 mg/l | 10 µg/l | 2 % | Single value |
| Bromodichloromethane | <0,00020 mg/l below limit of quantification | — | — | Single value |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Single value |
| Chromium | <0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Single value |
| Copper | <0,003 mg/l below limit of quantification | 2 mg/l | < 0.2 % * | Single value |
| Cyanide | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Single value |
| Dibromochloromethane | <0,00020 mg/l below limit of quantification | — | — | Single value |
| Fluoride | 0,08 mg/l | 1.5 mg/l | 5 % | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Single value |
| Nitrate | 0,834 mg/l | 50 mg/l | 2 % | Single value |
| Nitrite | <0,005 (+) mg/l below limit of quantification | 0.5 mg/l | < 1 % * | Single value |
| Polycyclic aromatic hydrocarbons | n.b. mg/l not determined | 0.1 µg/l | — | Single value |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Tetrachloroethene | <0,00010 mg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene and Trichloroethene (sum) | n.b. mg/l not determined | 10 µg/l | — | Single value |
| Tribromomethane (bromoform) | <0,00030 mg/l below limit of quantification | — | — | Single value |
| Trichloroethene | <0,00020 mg/l below limit of quantification | — | — | Single value |
| Trichloromethane (chloroform) | <0,00010 mg/l below limit of quantification | — | — | Single value |
| Trihalomethanes — Total | n.b. mg/l not determined | 50 µg/l | — | Single value |
| Uranium | <0,01 µg/l below limit of quantification | 10 µg/l | < 0.1 % * | Single value |
| Vinyl chloride | <0,0001 mg/l below limit of quantification | 0.5 µg/l | < 20 % * | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
PFAS (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorobutane sulfonic acid (PFBS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorobutanoic acid (PFBA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorodecane sulfonic acid (PFDS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorodecanoic acid (PFDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorododecanoic acid (PFDoDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoroheptane sulfonic acid (PFHpS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoroheptanoic acid (PFHpA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorohexane sulfonic acid (PFHxS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorohexanoic acid (PFHxA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorononane sulfonic acid (PFNS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorononanoic acid (PFNA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorooctanesulfonic acid (PFOS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorooctanoic acid (PFOA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoropentanesulfonic acid (PFPeS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoropentanoic acid (PFPeA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorotridecanesulfonic acid (PFTrDS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorotridecanoic acid (PFTrDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoroundecanoic acid (PFUnDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
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 |
| Ammonium | <0,020 (+) mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value |
| Calcite dissolution capacity | -12 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 22 mg/l | 250 mg/l | 9 % | Single value |
| Coliform bacteria | 0 KBE/100ml | 0/100 ml | — | Single value |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Single value |
| Colony count 36 °C | 0 KBE/ml | ohne anormale Veränderung | — | Single value |
| Conductivity (25 °C) | 470 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | <0,003 (NWG) mg/l not detectable | 0.2 mg/l | — | Single value |
| Manganese | <0,002 (NWG) mg/l not detectable | 50 µg/l | — | Single value |
| Odour | ohne | für den Verbraucher annehmbar | — | Single value |
| pH | 7,85 | 6,5–9,5 | — | Single value |
| Sodium | 10,2 mg/l | 200 mg/l | 5 % | Single value |
| Sulphate | 39 mg/l | 250 mg/l | 16 % | Single value |
| Temperature | 20,5 °C | — | — | Single value |
| Total organic carbon (TOC) | 1,6 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | 0,08 NTU | 1 NTU | — | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 3,59 mmol/l | — | — | Single value |
| Base capacity to pH 8.2 | 0,09 mmol/l | — | — | Single value |
| Calcium | 79,8 mg/l | — | — | Single value |
| Carbonate hardness | 9,9 °dH | — | — | Single value |
| Free carbon dioxide | 6,1 mg/l | — | — | Single value |
| Hardness range (WRMG) | mittel | — | — | Single value |
| Hydrogen carbonate | 216,0 mg/l | — | — | Single value |
| Magnesium | 6,87 mg/l | — | — | Single value |
| Potassium | 1,69 mg/l | — | — | Single value |
| Total hardness | 2,27 mmol/l | — | — | Single value |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://www.stadtwerke-norderstedt.de/fileadmin/user_upload/Dokumente/Wasser/2025/04.25_WWG_Gruppe_AB.pdf · 29.04.2025 · Probenahme 03.04.2025 09:30 · retrieved on 11/07/2026
Postcodes in this zone: 22844 , 22846 , 22848 , 22850 , 22851
Wasserwerk Harksheide
Stadtwerke NorderstedtAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 03/04/2025. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.
Water hardness
8.9 °dH
Hardness range mittel
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 1,27 mg/l | 50 mg/l | 3 % | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Sulphate | 34 mg/l | 250 mg/l | 14 % | Single value |
| Sodium | 11,3 mg/l | 200 mg/l | 6 % | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (80 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Single value |
Chemical parameters (33)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0005 mg/l below limit of quantification | 3 µg/l | < 17 % * | Single value |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Single value |
| Arsenic | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Benzene | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Benzo(a)pyrene | <0,000002 mg/l below limit of quantification | 10 ng/l | < 20 % * | Single value |
| Benzo(b)fluoranthene | <0,000002 mg/l below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | <0,000002 mg/l below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | <0,000002 mg/l below limit of quantification | — | — | Single value |
| Bisphenol A | <0,00005 (NWG) mg/l not detectable | 2.5 µg/l | — | Single value |
| Boron | 0,0155 mg/l | 1 mg/l | 2 % | Single value |
| Bromate | 0,00017 mg/l | 10 µg/l | 2 % | Single value |
| Bromodichloromethane | <0,00020 mg/l below limit of quantification | — | — | Single value |
| Cadmium | <0,0003 mg/l below limit of quantification | 3 µg/l | < 10 % * | Single value |
| Chromium | <0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Single value |
| Copper | <0,003 mg/l below limit of quantification | 2 mg/l | < 0.2 % * | Single value |
| Cyanide | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Single value |
| Dibromochloromethane | <0,00020 mg/l below limit of quantification | — | — | Single value |
| Fluoride | 0,11 mg/l | 1.5 mg/l | 7 % | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Single value |
| Nitrate | 1,27 mg/l | 50 mg/l | 3 % | Single value |
| Nitrite | <0,005 (+) mg/l below limit of quantification | 0.5 mg/l | < 1 % * | Single value |
| Polycyclic aromatic hydrocarbons | n.b. mg/l not determined | 0.1 µg/l | — | Single value |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Tetrachloroethene | <0,00010 mg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene and Trichloroethene (sum) | n.b. mg/l not determined | 10 µg/l | — | Single value |
| Tribromomethane (bromoform) | <0,00030 mg/l below limit of quantification | — | — | Single value |
| Trichloroethene | <0,00020 mg/l below limit of quantification | — | — | Single value |
| Trichloromethane (chloroform) | <0,00010 mg/l below limit of quantification | — | — | Single value |
| Trihalomethanes — Total | n.b. mg/l not determined | 50 µg/l | — | Single value |
| Uranium | 0,02 µg/l | 10 µg/l | 0.2 % | Single value |
| Vinyl chloride | <0,0001 mg/l below limit of quantification | 0.5 µg/l | < 20 % * | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
PFAS (18)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorobutane sulfonic acid (PFBS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorobutanoic acid (PFBA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorodecane sulfonic acid (PFDS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorodecanoic acid (PFDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorododecanoic acid (PFDoDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoroheptane sulfonic acid (PFHpS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoroheptanoic acid (PFHpA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorohexane sulfonic acid (PFHxS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorohexanoic acid (PFHxA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorononane sulfonic acid (PFNS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorononanoic acid (PFNA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorooctanesulfonic acid (PFOS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorooctanoic acid (PFOA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoropentanesulfonic acid (PFPeS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoropentanoic acid (PFPeA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorotridecanesulfonic acid (PFTrDS) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluorotridecanoic acid (PFTrDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
| Perfluoroundecanoic acid (PFUnDA) | <0,0010 µg/l below limit of quantification | — | — | Single value |
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 |
| Ammonium | <0,005 (NWG) mg/l not detectable | 0.5 mg/l | — | Single value |
| Calcite dissolution capacity | 4 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 26 mg/l | 250 mg/l | 10 % | Single value |
| Coliform bacteria | 0 KBE/100ml | 0/100 ml | — | Single value |
| Colony count 22 °C | 0 KBE/ml | ohne anormale Veränderung | — | Single value |
| Colony count 36 °C | 3 KBE/ml | ohne anormale Veränderung | — | Single value |
| Conductivity (25 °C) | 371 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | <0,010 (+) mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value |
| Manganese | <0,002 (NWG) mg/l not detectable | 50 µg/l | — | Single value |
| Odour | ohne | für den Verbraucher annehmbar | — | Single value |
| pH | 7,87 | 6,5–9,5 | — | Single value |
| Sodium | 11,3 mg/l | 200 mg/l | 6 % | Single value |
| Sulphate | 34 mg/l | 250 mg/l | 14 % | Single value |
| Temperature | 20,3 °C | — | — | Single value |
| Total organic carbon (TOC) | 1,9 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | 0,08 NTU | 1 NTU | — | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,30 mmol/l | — | — | Single value |
| Base capacity to pH 8.2 | 0,13 mmol/l | — | — | Single value |
| Calcium | 57,4 mg/l | — | — | Single value |
| Carbonate hardness | 6,3 °dH | — | — | Single value |
| Free carbon dioxide | 6,3 mg/l | — | — | Single value |
| Hardness range (WRMG) | mittel | — | — | Single value |
| Hydrogen carbonate | 137,3 mg/l | — | — | Single value |
| Magnesium | 3,80 mg/l | — | — | Single value |
| Potassium | 1,02 mg/l | — | — | Single value |
| Total hardness | 1,59 mmol/l | — | — | Single value |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://www.stadtwerke-norderstedt.de/fileadmin/user_upload/Dokumente/Wasser/2025/04.25_WWH_Gruppe_AB.pdf · 29.04.2025 · Probenahme 03.04.2025 08:45 · retrieved on 11/07/2026
Postcodes in this zone: 22844 , 22846 , 22848 , 22850 , 22851
Frequently asked questions about drinking water in Norderstedt
- How hard is the water in Norderstedt?
- Stadtwerke Norderstedt publishes a total hardness of 2,07 mmol/l for the supply zone Wasserwerk Friedrichsgabe — that corresponds to 11.6 °dH. The hardness range is a classification under the German Detergents and Cleaning Products Act (soft below 8,4 °dH, medium 8,4 to 14 °dH, hard above that) and not a quality verdict — it indicates how much calcium and magnesium is dissolved in the water. Basis: 29.04.2025, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Norderstedt?
- Stadtwerke Norderstedt publishes a nitrate value of <0,5 (+) mg/l for the supply zone Wasserwerk Friedrichsgabe. The statutory parametric value is 50 mg/l; the measured value lies below it and cannot be specified more precisely below the limit of quantification. Basis: 29.04.2025, retrieved on 11/07/2026.
- Who supplies the drinking water in Norderstedt?
- Stadtwerke Norderstedt. The values shown here come from the supply zone Wasserwerk Friedrichsgabe 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.