Drinking water in 41366
For this postcode NEW NiederrheinWasser GmbH publishes several supply zones. Which of them serves an individual address is not published — below are the values of the zone with the most documented parameters, the remaining 7 underneath.
How to read the share of the parametric value
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 Viersen, Aachener Weg 21, 41747 Viersen
NEW NiederrheinWasser GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
13 °dH
Hardness range medium
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 28,1 mg/l | 50 mg/l | 56 % | Single value |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Sulphate | 125,8 mg/l | 250 mg/l | 50 % | Single value |
Show all recorded parameters (101 — 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 (71)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,1,1-Trichloroethane | <0,2 µg/l below limit of quantification | — | — | Single value |
| 1,2-dichloroethane | <0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Single value |
| Acrylamide | <0,03 µg/l below limit of quantification | 0.1 µg/l | < 30 % * | Single value |
| AMPA | <0,03 µg/l below limit of quantification | — | — | Single value |
| Atrazine | 0,01 µg/l | — | — | Single value |
| Bentazone | <0,02 µg/l below limit of quantification | — | — | Single value |
| Benzene | <0,20 µg/l below limit of quantification | 1 µg/l | < 20 % * | Single value |
| Benzo(a)pyrene | <0,002 µg/l below limit of quantification | 10 ng/l | < 20 % * | Single value |
| Benzo(b)fluoranthene | <0,005 µg/l below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | <0,005 µg/l below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | <0,005 µg/l below limit of quantification | — | — | Single value |
| Bisphenol A | <0,01 µg/l below limit of quantification | 2.5 µg/l | < 0.4 % * | Single value |
| Bromacil | <0,03 µg/l below limit of quantification | — | — | Single value |
| Bromate | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Bromodichloromethane | <0,2 µg/l below limit of quantification | — | — | Single value |
| Bromoxynil | <0,03 µg/l below limit of quantification | — | — | Single value |
| Carbofuran | <0,03 µg/l below limit of quantification | — | — | Single value |
| Chloridazon | <0,02 µg/l below limit of quantification | — | — | Single value |
| Chlorotoluron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Chromium | <0,5 µg/l below limit of quantification | 25 µg/l | < 2 % * | Single value |
| cis-1,2-Dichloroethene | <1,0 µg/l below limit of quantification | — | — | Single value |
| Copper | <10 µg/l below limit of quantification | 2 mg/l | < 0.5 % * | Single value |
| Cyanide | <0,01 mg/l below limit of quantification | 50 µg/l | < 20 % * | Single value |
| Desethylatrazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Desisopropylatrazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Dibromochloromethane | <0,2 µg/l below limit of quantification | — | — | Single value |
| Dichloromethane | <0,3 µg/l below limit of quantification | — | — | Single value |
| Dichlorprop | <0,02 µg/l below limit of quantification | — | — | Single value |
| Diflufenican | <0,02 µg/l below limit of quantification | — | — | Single value |
| Dimethenamid | <0,03 µg/l below limit of quantification | — | — | Single value |
| Diuron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Epichlorohydrin | <0,03 µg/l below limit of quantification | 0.1 µg/l | < 30 % * | Single value |
| Ethidimuron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Ethofumesate | <0,02 µg/l below limit of quantification | — | — | Single value |
| Flufenacet | <0,03 µg/l below limit of quantification | — | — | Single value |
| Fluoranthene | <0,005 µg/l below limit of quantification | — | — | Single value |
| Fluoride | <0,100 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Single value |
| Glyphosate | <0,03 µg/l below limit of quantification | — | — | Single value |
| Hexazinone | <0,03 µg/l below limit of quantification | — | — | Single value |
| Imidacloprid | <0,03 µg/l below limit of quantification | — | — | Single value |
| Isoproturon | <0,03 µg/l below limit of quantification | — | — | Single value |
| Lenacil | <0,03 µg/l below limit of quantification | — | — | Single value |
| MCPA | <0,03 µg/l below limit of quantification | — | — | Single value |
| Mecoprop | <0,02 µg/l below limit of quantification | — | — | Single value |
| Mercury | <0,1 µg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Metalaxyl | <0,03 µg/l below limit of quantification | — | — | Single value |
| Metamitron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Metazachlor | <0,03 µg/l below limit of quantification | — | — | Single value |
| Methabenzthiazuron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Metobromuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metribuzin | <0,02 µg/l below limit of quantification | — | — | Single value |
| Monuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Nicosulfuron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Nitrate | 28,1 mg/l | 50 mg/l | 56 % | Single value |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value |
| Pendimethalin | <0,02 µg/l below limit of quantification | — | — | Single value |
| Propazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Propiconazole | <0,03 µg/l below limit of quantification | — | — | Single value |
| Prosulfocarb | <0,03 µg/l below limit of quantification | — | — | Single value |
| Quinmerac | <0,02 µg/l below limit of quantification | — | — | Single value |
| Simazine | <0,01 µg/l below limit of quantification | — | — | Single value |
| Terbuthylazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Terbutryn | <0,02 µg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene | <0,20 µg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene and Trichloroethene (sum) | <1,0 µg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Tetrachloromethane | <0,2 µg/l below limit of quantification | — | — | Single value |
| Tribromomethane (bromoform) | <0,3 µg/l below limit of quantification | — | — | Single value |
| Trichloroethene | <0,2 µg/l below limit of quantification | — | — | Single value |
| Trichloromethane (chloroform) | <0,2 µg/l below limit of quantification | — | — | Single value |
| Trihalomethanes — Total | <0,1 µg/l below limit of quantification | 50 µg/l | < 0.2 % * | Single value |
| Vinyl chloride | <0,1 µg/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 (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| HFPO-DA (GenX) | <0,0010 µg/l below limit of quantification | — | — | Single value |
Metabolites (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Desphenyl-chloridazon | 1,60 µg/l | — | — | Single value |
Indicator parameters (16)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <10 µg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value |
| Ammonium | 0,055 mg/l | 0.5 mg/l | 11 % | Single value |
| Calcite dissolution capacity | 3,5 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 44,5 mg/l | 250 mg/l | 18 % | Single value |
| Coliform bacteria | 0 KBE/100ml | 0/100 ml | — | Single value |
| Colour | 0 Unit not stated in the document | 0.5 m⁻¹ | — | Single value |
| Conductivity (25 °C) | 532 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | 0,013 mg/l | 0.2 mg/l | 6 % | Single value |
| Manganese | 0,002 mg/l | 50 µg/l | 4 % | Single value |
| Odour | 00 | für den Verbraucher annehmbar | — | Single value |
| Oxidisability | 0,38 mg/l | 5 mg/l O2 | — | Single value |
| pH | 7,54 | 6,5–9,5 | — | Single value |
| Sulphate | 125,8 mg/l | 250 mg/l | 50 % | Single value |
| Temperature | 11,4 °C | — | — | Single value |
| Total organic carbon (TOC) | 0,58 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | 0,18 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 |
|---|---|---|---|---|
| Calcium | 64,4 mg/l | — | — | Single value |
| Carbonate hardness | 3,4 °dH | — | — | Single value |
| Free carbon dioxide | 2,6 mg/l | — | — | Single value |
| Hydrogen carbonate | 75,1 mg/l | — | — | Single value |
| Non-carbonate hardness | 9,6 °dH | — | — | Single value |
| Oxygen | 11,0 mg/l | — | — | Single value |
| Phosphate | <0,05 mg/l below limit of quantification | — | — | Single value |
| Potassium | 3,8 mg/l | — | — | Single value |
| Saturation index | -0,341 | — | — | Single value |
| Total hardness | 13,0 °dH | — | — | Single value |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://www.new.de/mediathek/WW102REIN_2025-10-06.pdf · 23.02.2026 · 06.10.2025 · retrieved on 11/07/2026
Show 7 more supply zones in this postcode
WW Rasseln 003
NEW NiederrheinWasser GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
12.1 °dH
Hardness range medium
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 36,6 mg/l | 50 mg/l | 73 % | Single value |
Show all recorded parameters (7 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 36,6 mg/l | 50 mg/l | 73 % | Single value |
Indicator parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| pH | 7,43 | 6,5–9,5 | — | Single value |
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Gross alpha activity | < 0,025 Bq/l below limit of quantification | — | — | Single value |
| Indicative dose | < 0,100 mSv/a below limit of quantification | 0.1 mSv/a | — | Single value |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 66,4 mg/l | — | — | Single value |
| Magnesium | 12,2 mg/l | — | — | Single value |
| Total hardness | 12,1 °dH | — | — | Single value |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Source: https://trinkwasseranalyse.new.de/ · 20.01.2026 · retrieved on 11/07/2026
WW Dülken 101
NEW NiederrheinWasser GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 32,5 mg/l | 50 mg/l | 65 % | Single value |
Show all recorded parameters (6 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 32,5 mg/l | 50 mg/l | 65 % | Single value |
Indicator parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| pH | 7,82 | 6,5–9,5 | — | Single value |
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Gross alpha activity | < 0,025 Bq/l below limit of quantification | — | — | Single value · 09/2016 - 06/2017 (Erstuntersuchung) |
| Indicative dose | < 0,100 mSv/a below limit of quantification | 0.1 mSv/a | — | Single value · 09/2016 - 06/2017 (Erstuntersuchung) |
Further parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 60,1 mg/l | — | — | Single value |
| Magnesium | 15,1 mg/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://trinkwasseranalyse.new.de/ · 13.01.2026 · retrieved on 11/07/2026
WW Gatzweiler 009
NEW NiederrheinWasser GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 22,2 mg/l | 50 mg/l | 44 % | Single value |
Show all recorded parameters (6 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 22,2 mg/l | 50 mg/l | 44 % | Single value |
Indicator parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| pH | 7,98 | 6,5–9,5 | — | Single value |
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Gross alpha activity | < 0,025 Bq/l below limit of quantification | — | — | Single value |
| Indicative dose | < 0,100 mSv/a below limit of quantification | 0.1 mSv/a | — | Single value |
Further parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 69,4 mg/l | — | — | Single value |
| Magnesium | 10,6 mg/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://trinkwasseranalyse.new.de/ · 07.01.2026 · retrieved on 11/07/2026
WW Helenabrunn 001
NEW NiederrheinWasser GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 18,4 mg/l | 50 mg/l | 37 % | Single value |
Show all recorded parameters (6 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 18,4 mg/l | 50 mg/l | 37 % | Single value |
Indicator parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| pH | 7,97 | 6,5–9,5 | — | Single value |
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Gross alpha activity | <0,025 Bg/l below limit of quantification | — | — | Single value · Ergebnisse der Erstuntersuchungen 09/2016 - 06/2017 |
| Indicative dose | <0,100 mSv/a below limit of quantification | 0.1 mSv/a | — | Single value · Ergebnisse der Erstuntersuchungen 09/2016 - 06/2017 |
Further parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 77,9 mg/l | — | — | Single value |
| Magnesium | 12,8 mg/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://trinkwasseranalyse.new.de/ · vom 20.01.2026 · retrieved on 11/07/2026
WW Hoppbruch 013
NEW NiederrheinWasser GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 7,1 mg/l | 50 mg/l | 14 % | Single value |
Show all recorded parameters (6 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 7,1 mg/l | 50 mg/l | 14 % | Single value |
Indicator parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| pH | 7,65 | 6,5–9,5 | — | Single value |
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Gross alpha activity | < 0,025 Bq/l below limit of quantification | — | — | Single value |
| Indicative dose | < 0,100 mSv/a below limit of quantification | 0.1 mSv/a | — | Single value |
Further parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 63,9 mg/l | — | — | Single value |
| Magnesium | 17,2 mg/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://trinkwasseranalyse.new.de/ · 06.01.2026 · retrieved on 11/07/2026
WW Reststrauch 011
NEW NiederrheinWasser GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 5,6 mg/l | 50 mg/l | 11 % | Single value |
Show all recorded parameters (6 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 5,6 mg/l | 50 mg/l | 11 % | Single value |
Indicator parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| pH | 7,56 | 6,5–9,5 | — | Single value |
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Gross alpha activity | < 0,025 Bq/l below limit of quantification | — | — | Single value |
| Indicative dose | < 0,100 mSv/a below limit of quantification | 0.1 mSv/a | — | Single value |
Further parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 85,1 mg/l | — | — | Single value |
| Magnesium | 13,0 mg/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://trinkwasseranalyse.new.de/ · 06.01.2026 · retrieved on 11/07/2026
WW Viersen 102
NEW NiederrheinWasser GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 28,6 mg/l | 50 mg/l | 57 % | Single value |
Show all recorded parameters (6 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 28,6 mg/l | 50 mg/l | 57 % | Single value |
Indicator parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| pH | 7,68 | 6,5–9,5 | — | Single value |
Radiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Gross alpha activity | < 0,025 Bq/l below limit of quantification | — | — | Single value |
| Indicative dose | < 0,100 mSv/a below limit of quantification | 0.1 mSv/a | — | Single value |
Further parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 64,4 mg/l | — | — | Single value |
| Magnesium | 15,7 mg/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://trinkwasseranalyse.new.de/ · vom 13.01.2026 · retrieved on 11/07/2026
Frequent questions about postcode 41366
- How hard is the water in Postcode 41366?
- NEW NiederrheinWasser GmbH publishes a total hardness of 13 °dH for the supply zone Wasserwerk Viersen, Aachener Weg 21, 41747 Viersen (hardness range medium). 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: 23.02.2026, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Postcode 41366?
- NEW NiederrheinWasser GmbH publishes a nitrate value of 28,1 mg/l for the supply zone Wasserwerk Viersen, Aachener Weg 21, 41747 Viersen. The statutory parametric value is 50 mg/l; the measured value represents 56 % of the parametric value. Basis: 23.02.2026, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 41366?
- NEW NiederrheinWasser GmbH. The values shown here come from the supply zone Wasserwerk Viersen, Aachener Weg 21, 41747 Viersen 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.