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Drinking water in Wuppertal-Beyenburg (dazu gehört u.a. Frielinghausen, Herbringhausen, Spiekern) sowie Dahlhausen, Weuste und Kemna

5 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.

Water hardness
11.3 °dH
Hardness range mittel
Key values Benrath
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0,000005 mg/l Mean · Benrath
Nitrate 22 mg/l 50 mg/l
44 %
Mean · Benrath
Lead <0,0002 mg/l
below limit of quantification
10 µg/l
< 2 % *
Mean · Benrath
Escherichia coli (E. coli) 0 Anz./100 ml 0/100 ml Single value · Benrath
Sulphate 70 mg/l 250 mg/l
28 %
Mean · Benrath
Sodium 39,1 mg/l 200 mg/l
20 %
Mean · Benrath

* 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 (68 — most recent value per parameter)

Microbiology (3)

Microbiology – Benrath
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anz./100 ml 0/100 ml Single value · Benrath
Intestinal enterococci 0 Anz./100 ml 0/100 ml Single value · Benrath
Somatic coliphages <1 PFU/100 ml
below limit of quantification
50/100 ml
UBA guide value
Mean · Benrath

For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.

Chemical parameters (30)

Chemical parameters – Benrath
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 % *
Mean · Benrath
Antimony <0,0001 mg/l
below limit of quantification
5 µg/l
< 2 % *
Mean · Benrath
Arsenic 0,0006 mg/l 10 µg/l
6 %
Mean · Benrath
Benzene <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean · Benrath
Benzo(a)pyrene <0,000010 mg/l
below limit of quantification
10 ng/l
< 100 % *
Mean · Benrath
Bisphenol A <0,00003 mg/l
below limit of quantification
2.5 µg/l
< 1 % *
Mean · Benrath
Boron 0,039 mg/l 1 mg/l
4 %
Mean · Benrath
Bromate <0,0005 mg/l
below limit of quantification
10 µg/l
< 5 % *
Mean · Benrath
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean · Benrath
Chlorate - mg/l
not determined
70 µg/l Mean · Benrath
Chlorite - mg/l
not determined
0.2 mg/l Mean · Benrath
Chromium 0,0005 mg/l 25 µg/l
2 %
Mean · Benrath
Copper <0,001 mg/l
below limit of quantification
2 mg/l
< < 0.1 % *
Mean · Benrath
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean · Benrath
Fluoride <0,20 mg/l
below limit of quantification
1.5 mg/l
< 13 % *
Mean · Benrath
Haloacetic acids (HAA) n. b. mg/l
not determined
Mean · Benrath
Lead <0,0002 mg/l
below limit of quantification
10 µg/l
< 2 % *
Mean · Benrath
Mercury <0,00005 mg/l
below limit of quantification
1 µg/l
< 5 % *
Mean · Benrath
Microcystin-LR <0,00005 mg/l
below limit of quantification
Mean · Benrath
Nickel <0,0004 mg/l
below limit of quantification
20 µg/l
< 2 % *
Mean · Benrath
Nitrate 22 mg/l 50 mg/l
44 %
Mean · Benrath
Nitrite <0,03 mg/l
below limit of quantification
0.5 mg/l
< 6 % *
Mean · Benrath
Pesticides n. b. mg/l
not determined
0.1 µg/l Mean · Benrath
Pesticides — Total n. b. mg/l
not determined
0.5 µg/l Mean · Benrath
Polycyclic aromatic hydrocarbons n.b. mg/l
not determined
0.1 µg/l Mean · Benrath
Selenium 0,0004 mg/l 10 µg/l
4 %
Mean · Benrath
Tetrachloroethene <0,0001 mg/l
below limit of quantification
Mean · Benrath
Trichloroethene <0,0001 mg/l
below limit of quantification
Mean · Benrath
Trihalomethanes — Total n.b. mg/l
not determined
50 µg/l Mean · Benrath
Uranium 0,0005 mg/l 10 µg/l
5 %
Mean · Benrath

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (2)

PFAS – Benrath
Parameter Value Parametric value Share of the parametric value Reference
Sum of 4 PFAS <0,000001 mg/l
below limit of quantification
Mean · Benrath
Sum of PFAS 0,000005 mg/l Mean · Benrath

Indicator parameters (20)

Indicator parameters – Benrath
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 0,015 mg/l 0.2 mg/l
8 %
Mean · Benrath
Ammonium <0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Mean · Benrath
Calcite dissolution capacity -2,39 mg/l CaCO3 5 mg/l CaCO3 Mean · Benrath
Chloride 69 mg/l 250 mg/l
28 %
Mean · Benrath
Clostridium perfringens (including spores) 0 Anz./100 ml 0/100 ml Single value · Benrath
Coliform bacteria 0 Anz./100 ml 0/100 ml Single value · Benrath
Colony count 22 °C 0 KBE/ml ohne anormale Veränderung Mean · Benrath
Colony count 36 °C 0 KBE/ml ohne anormale Veränderung Mean · Benrath
Colour <0,10 1/m
below limit of quantification
0.5 m⁻¹ Mean · Benrath
Conductivity (25 °C) 608 µS/cm 2,790 µS/cm Mean · Benrath
Iron <0,020 mg/l
below limit of quantification
0.2 mg/l
< 10 % *
Mean · Benrath
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean · Benrath
Odour o. a. V. - für den Verbraucher annehmbar Mean · Benrath
pH 7,9 - 6,5–9,5 Mean · Benrath
Sodium 39,1 mg/l 200 mg/l
20 %
Mean · Benrath
Sulphate 70 mg/l 250 mg/l
28 %
Mean · Benrath
Taste o. a. V. - für den Verbraucher annehmbar Mean · Benrath
Temperature 13,3 °C Mean · Benrath
Total organic carbon (TOC) 0,77 mg/l ohne anormale Veränderung Mean · Benrath
Turbidity <0,05 NTU
below limit of quantification
1 NTU Mean · Benrath

* 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 (13)

Further parameters – Benrath
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 2,19 mmol/l Mean · Benrath
AOX (adsorbable organically bound halogens) <0,010 mg/l
below limit of quantification
Mean · Benrath
Calcium 62 mg/l Mean · Benrath
Carbonate hardness 6,1 °dH Mean · Benrath
Dissolved organic carbon (DOC) 0,7 mg/l Mean · Benrath
Hardness range (WRMG) mittel Mean · Benrath
Magnesium 12 mg/l Mean · Benrath
Oxygen 9,6 mg/l Mean · Benrath
Phosphate <0,03 mg/l
below limit of quantification
Mean · Benrath
Potassium 4,0 mg/l Mean · Benrath
Saturation index 0,13 Mean · Benrath
Total hardness 11,3 °dH Mean · Benrath
Zinc <0,0020 mg/l
below limit of quantification
Mean · Benrath

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.wuppertal.de/microsite/wasserversorgung/wasserversorgung/index.php · Jahresmittelwerte 2025 · retrieved on 11/07/2026

Postcodes in this zone: 42399

Show 4 more supply zones

Dabringhausen

WSW Wuppertal
Water hardness
5.1 °dH
Hardness range weich
Key values Dabringhausen
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,000001 mg/l
below limit of quantification
Mean · Dabringhausen
Nitrate 7,2 mg/l 50 mg/l
14 %
Mean · Dabringhausen
Lead <0,0002 mg/l
below limit of quantification
10 µg/l
< 2 % *
Mean · Dabringhausen
Escherichia coli (E. coli) 0 Anz./100 ml 0/100 ml Single value · Dabringhausen
Sulphate 14 mg/l 250 mg/l
6 %
Mean · Dabringhausen
Sodium 5,4 mg/l 200 mg/l
3 %
Mean · Dabringhausen

* 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 (68 — most recent value per parameter)

Microbiology (3)

Microbiology – Dabringhausen
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anz./100 ml 0/100 ml Single value · Dabringhausen
Intestinal enterococci 0 Anz./100 ml 0/100 ml Single value · Dabringhausen
Somatic coliphages <1 PFU/100 ml
below limit of quantification
50/100 ml
UBA guide value
Mean · Dabringhausen

For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.

Chemical parameters (30)

Chemical parameters – Dabringhausen
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 % *
Mean · Dabringhausen
Antimony <0,0001 mg/l
below limit of quantification
5 µg/l
< 2 % *
Mean · Dabringhausen
Arsenic <0,0003 mg/l
below limit of quantification
10 µg/l
< 3 % *
Mean · Dabringhausen
Benzene <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean · Dabringhausen
Benzo(a)pyrene <0,000010 mg/l
below limit of quantification
10 ng/l
< 100 % *
Mean · Dabringhausen
Bisphenol A <0,00003 mg/l
below limit of quantification
2.5 µg/l
< 1 % *
Mean · Dabringhausen
Boron <0,010 mg/l
below limit of quantification
1 mg/l
< 1 % *
Mean · Dabringhausen
Bromate <0,0005 mg/l
below limit of quantification
10 µg/l
< 5 % *
Mean · Dabringhausen
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean · Dabringhausen
Chlorate - mg/l
not determined
70 µg/l Mean · Dabringhausen
Chlorite - mg/l
not determined
0.2 mg/l Mean · Dabringhausen
Chromium <0,0005 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean · Dabringhausen
Copper <0,0010 mg/l
below limit of quantification
2 mg/l
< < 0.1 % *
Mean · Dabringhausen
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean · Dabringhausen
Fluoride <0,20 mg/l
below limit of quantification
1.5 mg/l
< 13 % *
Mean · Dabringhausen
Haloacetic acids (HAA) n. b. mg/l
not determined
Mean · Dabringhausen
Lead <0,0002 mg/l
below limit of quantification
10 µg/l
< 2 % *
Mean · Dabringhausen
Mercury <0,00005 mg/l
below limit of quantification
1 µg/l
< 5 % *
Mean · Dabringhausen
Microcystin-LR <0,00005 mg/l
below limit of quantification
Mean · Dabringhausen
Nickel <0,0004 mg/l
below limit of quantification
20 µg/l
< 2 % *
Mean · Dabringhausen
Nitrate 7,2 mg/l 50 mg/l
14 %
Mean · Dabringhausen
Nitrite <0,03 mg/l
below limit of quantification
0.5 mg/l
< 6 % *
Mean · Dabringhausen
Pesticides n. b. mg/l
not determined
0.1 µg/l Mean · Dabringhausen
Pesticides — Total n. b. mg/l
not determined
0.5 µg/l Mean · Dabringhausen
Polycyclic aromatic hydrocarbons n. b. mg/l
not determined
0.1 µg/l Mean · Dabringhausen
Selenium <0,0002 mg/l
below limit of quantification
10 µg/l
< 2 % *
Mean · Dabringhausen
Tetrachloroethene <0,0001 mg/l
below limit of quantification
Mean · Dabringhausen
Trichloroethene <0,0001 mg/l
below limit of quantification
Mean · Dabringhausen
Trihalomethanes — Total n. b. mg/l
not determined
50 µg/l Mean · Dabringhausen
Uranium <0,0001 mg/l
below limit of quantification
10 µg/l
< 1 % *
Mean · Dabringhausen

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (2)

PFAS – Dabringhausen
Parameter Value Parametric value Share of the parametric value Reference
Sum of 4 PFAS <0,000001 mg/l
below limit of quantification
Mean · Dabringhausen
Sum of PFAS <0,000001 mg/l
below limit of quantification
Mean · Dabringhausen

Indicator parameters (20)

Indicator parameters – Dabringhausen
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 0,007 mg/l 0.2 mg/l
3 %
Mean · Dabringhausen
Ammonium <0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Mean · Dabringhausen
Calcite dissolution capacity 2,07 mg/l CaCO3 5 mg/l CaCO3 Mean · Dabringhausen
Chloride 8 mg/l 250 mg/l
3 %
Mean · Dabringhausen
Clostridium perfringens (including spores) 0 Anz./100 ml 0/100 ml Single value · Dabringhausen
Coliform bacteria 0 Anz./100 ml 0/100 ml Single value · Dabringhausen
Colony count 22 °C 0 KBE/ml ohne anormale Veränderung Mean · Dabringhausen
Colony count 36 °C 0 KBE/ml ohne anormale Veränderung Mean · Dabringhausen
Colour <0,10 1/m
below limit of quantification
0.5 m⁻¹ Mean · Dabringhausen
Conductivity (25 °C) 211 µS/cm 2,790 µS/cm Mean · Dabringhausen
Iron <0,020 mg/l
below limit of quantification
0.2 mg/l
< 10 % *
Mean · Dabringhausen
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean · Dabringhausen
Odour o. a. V. - für den Verbraucher annehmbar Mean · Dabringhausen
pH 8,0 - 6,5–9,5 Mean · Dabringhausen
Sodium 5,4 mg/l 200 mg/l
3 %
Mean · Dabringhausen
Sulphate 14 mg/l 250 mg/l
6 %
Mean · Dabringhausen
Taste o. a. V. - für den Verbraucher annehmbar Mean · Dabringhausen
Temperature 7,2 °C Mean · Dabringhausen
Total organic carbon (TOC) 1,07 mg/l ohne anormale Veränderung Mean · Dabringhausen
Turbidity 0,06 NTU 1 NTU Mean · Dabringhausen

* 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 (13)

Further parameters – Dabringhausen
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 1,46 mmol/l Mean · Dabringhausen
AOX (adsorbable organically bound halogens) <0,010 mg/l
below limit of quantification
Mean · Dabringhausen
Calcium 31 mg/l Mean · Dabringhausen
Carbonate hardness 4,1 °dH Mean · Dabringhausen
Dissolved organic carbon (DOC) 1,0 mg/l Mean · Dabringhausen
Hardness range (WRMG) weich Mean · Dabringhausen
Magnesium 3,5 mg/l Mean · Dabringhausen
Oxygen 11,2 mg/l Mean · Dabringhausen
Phosphate <0,03 mg/l
below limit of quantification
Mean · Dabringhausen
Potassium 1,6 mg/l Mean · Dabringhausen
Saturation index -0,23 Mean · Dabringhausen
Total hardness 5,1 °dH Mean · Dabringhausen
Zinc <0,0020 mg/l
below limit of quantification
Mean · Dabringhausen

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.wuppertal.de/microsite/wasserversorgung/wasserversorgung/index.php · Jahresmittelwerte 2025 · retrieved on 11/07/2026

Postcodes in this zone: 42399

Herbringhausen

WSW Wuppertal
Water hardness
5.5 °dH
Hardness range weich
Key values Herbringhausen
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS <0,000001 mg/l
below limit of quantification
Mean · Herbringhausen
Nitrate 7,1 mg/l 50 mg/l
14 %
Mean · Herbringhausen
Lead <0,0002 mg/l
below limit of quantification
10 µg/l
< 2 % *
Mean · Herbringhausen
Escherichia coli (E. coli) 0 Anz./100 ml 0/100 ml Single value · Herbringhausen
Sulphate 11 mg/l 250 mg/l
4 %
Mean · Herbringhausen
Sodium 6,2 mg/l 200 mg/l
3 %
Mean · Herbringhausen

* 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 (68 — most recent value per parameter)

Microbiology (3)

Microbiology – Herbringhausen
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anz./100 ml 0/100 ml Single value · Herbringhausen
Intestinal enterococci 0 Anz./100 ml 0/100 ml Single value · Herbringhausen
Somatic coliphages 2 PFU/100 ml 50/100 ml
UBA guide value
Mean · Herbringhausen

For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.

Chemical parameters (30)

Chemical parameters – Herbringhausen
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 % *
Mean · Herbringhausen
Antimony <0,0001 mg/l
below limit of quantification
5 µg/l
< 2 % *
Mean · Herbringhausen
Arsenic <0,0003 mg/l
below limit of quantification
10 µg/l
< 3 % *
Mean · Herbringhausen
Benzene <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean · Herbringhausen
Benzo(a)pyrene <0,000010 mg/l
below limit of quantification
10 ng/l
< 100 % *
Mean · Herbringhausen
Bisphenol A <0,00003 mg/l
below limit of quantification
2.5 µg/l
< 1 % *
Mean · Herbringhausen
Boron <0,010 mg/l
below limit of quantification
1 mg/l
< 1 % *
Mean · Herbringhausen
Bromate <0,0005 mg/l
below limit of quantification
10 µg/l
< 5 % *
Mean · Herbringhausen
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean · Herbringhausen
Chlorate - mg/l
not determined
70 µg/l Mean · Herbringhausen
Chlorite - mg/l
not determined
0.2 mg/l Mean · Herbringhausen
Chromium <0,0005 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean · Herbringhausen
Copper <0,0010 mg/l
below limit of quantification
2 mg/l
< < 0.1 % *
Mean · Herbringhausen
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean · Herbringhausen
Fluoride <0,20 mg/l
below limit of quantification
1.5 mg/l
< 13 % *
Mean · Herbringhausen
Haloacetic acids (HAA) n. b. mg/l
not determined
Mean · Herbringhausen
Lead <0,0002 mg/l
below limit of quantification
10 µg/l
< 2 % *
Mean · Herbringhausen
Mercury <0,00005 mg/l
below limit of quantification
1 µg/l
< 5 % *
Mean · Herbringhausen
Microcystin-LR <0,00005 mg/l
below limit of quantification
Mean · Herbringhausen
Nickel 0,0005 mg/l 20 µg/l
3 %
Mean · Herbringhausen
Nitrate 7,1 mg/l 50 mg/l
14 %
Mean · Herbringhausen
Nitrite <0,03 mg/l
below limit of quantification
0.5 mg/l
< 6 % *
Mean · Herbringhausen
Pesticides n. b. mg/l
not determined
0.1 µg/l Mean · Herbringhausen
Pesticides — Total n. b. mg/l
not determined
0.5 µg/l Mean · Herbringhausen
Polycyclic aromatic hydrocarbons n. b. mg/l
not determined
0.1 µg/l Mean · Herbringhausen
Selenium <0,0002 mg/l
below limit of quantification
10 µg/l
< 2 % *
Mean · Herbringhausen
Tetrachloroethene <0,0001 mg/l
below limit of quantification
Mean · Herbringhausen
Trichloroethene <0,0001 mg/l
below limit of quantification
Mean · Herbringhausen
Trihalomethanes — Total n. b. mg/l
not determined
50 µg/l Mean · Herbringhausen
Uranium <0,0001 mg/l
below limit of quantification
10 µg/l
< 1 % *
Mean · Herbringhausen

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (2)

PFAS – Herbringhausen
Parameter Value Parametric value Share of the parametric value Reference
Sum of 4 PFAS <0,000001 mg/l
below limit of quantification
Mean · Herbringhausen
Sum of PFAS <0,000001 mg/l
below limit of quantification
Mean · Herbringhausen

Indicator parameters (20)

Indicator parameters – Herbringhausen
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 0,005 mg/l 0.2 mg/l
3 %
Mean · Herbringhausen
Ammonium <0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Mean · Herbringhausen
Calcite dissolution capacity -0,30 mg/l CaCO3 5 mg/l CaCO3 Mean · Herbringhausen
Chloride 10 mg/l 250 mg/l
4 %
Mean · Herbringhausen
Clostridium perfringens (including spores) 0 Anz./100 ml 0/100 ml Single value · Herbringhausen
Coliform bacteria 0 Anz./100 ml 0/100 ml Single value · Herbringhausen
Colony count 22 °C 0 KBE/ml ohne anormale Veränderung Mean · Herbringhausen
Colony count 36 °C 0 KBE/ml ohne anormale Veränderung Mean · Herbringhausen
Colour <0,10 1/m
below limit of quantification
0.5 m⁻¹ Mean · Herbringhausen
Conductivity (25 °C) 230 µS/cm 2,790 µS/cm Mean · Herbringhausen
Iron <0,020 mg/l
below limit of quantification
0.2 mg/l
< 10 % *
Mean · Herbringhausen
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean · Herbringhausen
Odour o. a. V. - für den Verbraucher annehmbar Mean · Herbringhausen
pH 8,2 - 6,5–9,5 Mean · Herbringhausen
Sodium 6,2 mg/l 200 mg/l
3 %
Mean · Herbringhausen
Sulphate 11 mg/l 250 mg/l
4 %
Mean · Herbringhausen
Taste o. a. V. - für den Verbraucher annehmbar Mean · Herbringhausen
Temperature 8,7 °C Mean · Herbringhausen
Total organic carbon (TOC) 0,95 mg/l ohne anormale Veränderung Mean · Herbringhausen
Turbidity 0,08 NTU 1 NTU Mean · Herbringhausen

* 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 (13)

Further parameters – Herbringhausen
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 1,65 mmol/l Mean · Herbringhausen
AOX (adsorbable organically bound halogens) <0,010 mg/l
below limit of quantification
Mean · Herbringhausen
Calcium 35 mg/l Mean · Herbringhausen
Carbonate hardness 4,6 °dH Mean · Herbringhausen
Dissolved organic carbon (DOC) 0,9 mg/l Mean · Herbringhausen
Hardness range (WRMG) weich Mean · Herbringhausen
Magnesium 3,1 mg/l Mean · Herbringhausen
Oxygen 10,5 mg/l Mean · Herbringhausen
Phosphate <0,03 mg/l
below limit of quantification
Mean · Herbringhausen
Potassium 1,3 mg/l Mean · Herbringhausen
Saturation index 0,04 Mean · Herbringhausen
Total hardness 5,5 °dH Mean · Herbringhausen
Zinc <0,0020 mg/l
below limit of quantification
Mean · Herbringhausen

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.wuppertal.de/microsite/wasserversorgung/wasserversorgung/index.php · Jahresmittelwerte 2025 · retrieved on 11/07/2026

Postcodes in this zone: 42399

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
3.5 °dH
Hardness range weich
Key values Wasserwerk Rohland
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS n.b. mg/l
not determined
Single value · Wasserwerk Rohland
Nitrate 10,4 mg/l 50 mg/l
21 %
Single value · Wasserwerk Rohland
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Wasserwerk Rohland
Escherichia coli (E. coli) 0 /100ml 0/100 ml Single value · Wasserwerk Rohland
Sulphate 12,5 mg/l 250 mg/l
5 %
Single value · Wasserwerk Rohland
Sodium 7,8 mg/l 200 mg/l
4 %
Single value · Wasserwerk Rohland

* 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 (78 — most recent value per parameter)

Microbiology (2)

Microbiology – Wasserwerk Rohland
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 /100ml 0/100 ml Single value · Wasserwerk Rohland
Intestinal enterococci 0 /100ml 0/100 ml Single value · Wasserwerk Rohland

Chemical parameters (27)

Chemical parameters – Wasserwerk Rohland
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,0003 mg/l
below limit of quantification
3 µg/l
< 10 % *
Single value · Wasserwerk Rohland
Antimony <0,001 mg/l
below limit of quantification
5 µg/l
< 20 % *
Single value · Wasserwerk Rohland
Arsenic <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Wasserwerk Rohland
Benzene <0,0002 mg/l
below limit of quantification
1 µg/l
< 20 % *
Single value · Wasserwerk Rohland
Benzo(a)pyrene <0,000001 mg/l
below limit of quantification
10 ng/l
< 10 % *
Single value · Wasserwerk Rohland
Bisphenol A <0,0001 mg/l
below limit of quantification
2.5 µg/l
< 4 % *
Single value · Wasserwerk Rohland
Boron <0,05 mg/l
below limit of quantification
1 mg/l
< 5 % *
Single value · Wasserwerk Rohland
Bromate <0,003 mg/l
below limit of quantification
10 µg/l
< 30 % *
Single value · Wasserwerk Rohland
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Single value · Wasserwerk Rohland
Chlorate 0,029 mg/l 70 µg/l
41 %
Single value · Wasserwerk Rohland
Chlorite 0,14 mg/l 0.2 mg/l
70 %
Single value · Wasserwerk Rohland
Chromium <0,001 mg/l
below limit of quantification
25 µg/l
< 4 % *
Single value · Wasserwerk Rohland
Copper <0,10 mg/l
below limit of quantification
2 mg/l
< 5 % *
Single value · Wasserwerk Rohland
Cyanide <0,01 mg/l
below limit of quantification
50 µg/l
< 20 % *
Single value · Wasserwerk Rohland
Dichloromethane <0,001 mg/l
below limit of quantification
Single value · Wasserwerk Rohland
Fluoride <0,05 mg/l
below limit of quantification
1.5 mg/l
< 3 % *
Single value · Wasserwerk Rohland
Haloacetic acids (HAA) 0,0008 mg/l Single value · Wasserwerk Rohland
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Wasserwerk Rohland
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Single value · Wasserwerk Rohland
Nickel 0,002 mg/l 20 µg/l
10 %
Single value · Wasserwerk Rohland
Nitrate 10,4 mg/l 50 mg/l
21 %
Single value · Wasserwerk Rohland
Nitrite <0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Single value · Wasserwerk Rohland
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Wasserwerk Rohland
Tetrachloroethene and Trichloroethene (sum) n.b. mg/l
not determined
10 µg/l Single value · Wasserwerk Rohland
Tetrachloromethane <0,0001 mg/l
below limit of quantification
Single value · Wasserwerk Rohland
Trihalomethanes — Total <0,0001 mg/l
below limit of quantification
50 µg/l
< 0.2 % *
Single value · Wasserwerk Rohland
Uranium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Wasserwerk Rohland

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (2)

PFAS – Wasserwerk Rohland
Parameter Value Parametric value Share of the parametric value Reference
Sum of 4 PFAS n.b. mg/l
not determined
Single value · Wasserwerk Rohland
Sum of PFAS n.b. mg/l
not determined
Single value · Wasserwerk Rohland

Indicator parameters (17)

Indicator parameters – Wasserwerk Rohland
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 0,01 mg/l 0.2 mg/l
5 %
Single value · Wasserwerk Rohland
Ammonium <0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Single value · Wasserwerk Rohland
Calcite dissolution capacity 2,5 mg/l CaCO3 5 mg/l CaCO3 Single value · Wasserwerk Rohland
Chloride 13,4 mg/l 250 mg/l
5 %
Single value · Wasserwerk Rohland
Clostridium perfringens (including spores) 0 /100ml 0/100 ml Single value · Wasserwerk Rohland
Coliform bacteria 0 /100ml 0/100 ml Single value · Wasserwerk Rohland
Colony count 22 °C <1 /ml
below limit of quantification
ohne anormale Veränderung Single value · Wasserwerk Rohland
Colony count 36 °C <1 /ml
below limit of quantification
ohne anormale Veränderung Single value · Wasserwerk Rohland
Colour <0,1 m-1
below limit of quantification
0.5 m⁻¹ Single value · Wasserwerk Rohland
Conductivity (25 °C) 178 µS/cm 2,790 µS/cm Single value · Wasserwerk Rohland
Iron <0,03 mg/l
below limit of quantification
0.2 mg/l
< 15 % *
Single value · Wasserwerk Rohland
Manganese <0,001 mg/l
below limit of quantification
50 µg/l
< 2 % *
Single value · Wasserwerk Rohland
pH 8,00 6,5–9,5 Single value · Wasserwerk Rohland
Sodium 7,8 mg/l 200 mg/l
4 %
Single value · Wasserwerk Rohland
Sulphate 12,5 mg/l 250 mg/l
5 %
Single value · Wasserwerk Rohland
Total organic carbon (TOC) 1,1 mg/l ohne anormale Veränderung Single value · Wasserwerk Rohland
Turbidity 0,07 NTU 1 NTU Single value · Wasserwerk Rohland

* 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 (30)

Further parameters – Wasserwerk Rohland
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 0,86 mmol/l Single value · Wasserwerk Rohland
Amidotrizoic acid <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Atenolol <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Base capacity to pH 8.2 0,009 mmol/l Single value · Wasserwerk Rohland
Bezafibrate <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Calcium 0,475 mmol/l Single value · Wasserwerk Rohland
Carbamazepine <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Carbonate hardness 2,5 °dH Single value · Wasserwerk Rohland
Clofibric acid <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Diclofenac <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Hardness range (WRMG) weich Single value · Wasserwerk Rohland
Hydrogen carbonate 52,5 mg/l Single value · Wasserwerk Rohland
Iomeprol <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Iopamidol <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Iopromide <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Magnesium 0,134 mmol/l Single value · Wasserwerk Rohland
Metoprolol <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Oxygen 9,8 mg/l Single value · Wasserwerk Rohland
Phenazone <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Phosphate <0,01 mg/l
below limit of quantification
Single value · Wasserwerk Rohland
Potassium 0,033 mmol/l Single value · Wasserwerk Rohland
Primidone <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Propyphenazone <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Sotalol <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Sulfamethoxazole <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Total hardness 3,5 °dH Single value · Wasserwerk Rohland
Tributyl phosphate <0,025 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Trimethoprim <0,010 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Triphenyl phosphate <0,025 µg/l
below limit of quantification
Single value · Wasserwerk Rohland
Zinc 0,002 mg/l Single value · Wasserwerk Rohland

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.avu.de/wp-content/uploads/AVU-Trinkwasseranalyse-2025.pdf · Jahresmittelwerte 2025 · retrieved on 08/07/2026

Postcodes in this zone: 42399

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
7.3 °dH
Hardness range weich
Key values Wasserwerk Volmarstein
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0,000025 mg/l Single value · Wasserwerk Volmarstein
Nitrate 3,7 mg/l 50 mg/l
7 %
Single value · Wasserwerk Volmarstein
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Wasserwerk Volmarstein
Escherichia coli (E. coli) 0 /100ml 0/100 ml Single value · Wasserwerk Volmarstein
Sulphate 44,6 mg/l 250 mg/l
18 %
Single value · Wasserwerk Volmarstein
Sodium 23,0 mg/l 200 mg/l
12 %
Single value · Wasserwerk Volmarstein

* 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 (60 — most recent value per parameter)

Microbiology (2)

Microbiology – Wasserwerk Volmarstein
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 /100ml 0/100 ml Single value · Wasserwerk Volmarstein
Intestinal enterococci 0 /100ml 0/100 ml Single value · Wasserwerk Volmarstein

Chemical parameters (27)

Chemical parameters – Wasserwerk Volmarstein
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,0003 mg/l
below limit of quantification
3 µg/l
< 10 % *
Single value · Wasserwerk Volmarstein
Antimony <0,001 mg/l
below limit of quantification
5 µg/l
< 20 % *
Single value · Wasserwerk Volmarstein
Arsenic <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Wasserwerk Volmarstein
Benzene <0,0002 mg/l
below limit of quantification
1 µg/l
< 20 % *
Single value · Wasserwerk Volmarstein
Benzo(a)pyrene <0,000001 mg/l
below limit of quantification
10 ng/l
< 10 % *
Single value · Wasserwerk Volmarstein
Bisphenol A <0,001 mg/l
below limit of quantification
2.5 µg/l
< 40 % *
Single value · Wasserwerk Volmarstein
Boron 0,08 mg/l 1 mg/l
8 %
Single value · Wasserwerk Volmarstein
Bromate <0,003 mg/l
below limit of quantification
10 µg/l
< 30 % *
Single value · Wasserwerk Volmarstein
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Single value · Wasserwerk Volmarstein
Chlorate <0,02 mg/l
below limit of quantification
70 µg/l
< 29 % *
Single value · Wasserwerk Volmarstein
Chlorite 0,08 mg/l 0.2 mg/l
40 %
Single value · Wasserwerk Volmarstein
Chromium <0,001 mg/l
below limit of quantification
25 µg/l
< 4 % *
Single value · Wasserwerk Volmarstein
Copper <0,10 mg/l
below limit of quantification
2 mg/l
< 5 % *
Single value · Wasserwerk Volmarstein
Cyanide <0,01 mg/l
below limit of quantification
50 µg/l
< 20 % *
Single value · Wasserwerk Volmarstein
Dichloromethane <0,001 mg/l
below limit of quantification
Single value · Wasserwerk Volmarstein
Fluoride 0,14 mg/l 1.5 mg/l
9 %
Single value · Wasserwerk Volmarstein
Haloacetic acids (HAA) - mg/l
not determined
Single value · Wasserwerk Volmarstein
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Wasserwerk Volmarstein
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Single value · Wasserwerk Volmarstein
Nickel <0,001 mg/l
below limit of quantification
20 µg/l
< 5 % *
Single value · Wasserwerk Volmarstein
Nitrate 3,7 mg/l 50 mg/l
7 %
Single value · Wasserwerk Volmarstein
Nitrite <0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Single value · Wasserwerk Volmarstein
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Wasserwerk Volmarstein
Tetrachloroethene and Trichloroethene (sum) n.b. mg/l
not determined
10 µg/l Single value · Wasserwerk Volmarstein
Tetrachloromethane <0,0001 mg/l
below limit of quantification
Single value · Wasserwerk Volmarstein
Trihalomethanes — Total 0,009 mg/l 50 µg/l
18 %
Single value · Wasserwerk Volmarstein
Uranium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Wasserwerk Volmarstein

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (2)

PFAS – Wasserwerk Volmarstein
Parameter Value Parametric value Share of the parametric value Reference
Sum of 4 PFAS 0,000010 mg/l Single value · Wasserwerk Volmarstein
Sum of PFAS 0,000025 mg/l Single value · Wasserwerk Volmarstein

Indicator parameters (17)

Indicator parameters – Wasserwerk Volmarstein
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 · Wasserwerk Volmarstein
Ammonium <0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Single value · Wasserwerk Volmarstein
Calcite dissolution capacity -0,1 mg/l CaCO3 5 mg/l CaCO3 Single value · Wasserwerk Volmarstein
Chloride 36,3 mg/l 250 mg/l
15 %
Single value · Wasserwerk Volmarstein
Clostridium perfringens (including spores) 0 /100ml 0/100 ml Single value · Wasserwerk Volmarstein
Coliform bacteria 0 /100ml 0/100 ml Single value · Wasserwerk Volmarstein
Colony count 22 °C <1 /ml
below limit of quantification
ohne anormale Veränderung Single value · Wasserwerk Volmarstein
Colony count 36 °C <1 /ml
below limit of quantification
ohne anormale Veränderung Single value · Wasserwerk Volmarstein
Colour <0,1 m-1
below limit of quantification
0.5 m⁻¹ Single value · Wasserwerk Volmarstein
Conductivity (25 °C) 424 µS/cm 2,790 µS/cm Single value · Wasserwerk Volmarstein
Iron 0,001 mg/l 0.2 mg/l
0.5 %
Single value · Wasserwerk Volmarstein
Manganese <0,001 mg/l
below limit of quantification
50 µg/l
< 2 % *
Single value · Wasserwerk Volmarstein
pH 7,93 6,5–9,5 Single value · Wasserwerk Volmarstein
Sodium 23,0 mg/l 200 mg/l
12 %
Single value · Wasserwerk Volmarstein
Sulphate 44,6 mg/l 250 mg/l
18 %
Single value · Wasserwerk Volmarstein
Total organic carbon (TOC) 1,4 mg/l ohne anormale Veränderung Single value · Wasserwerk Volmarstein
Turbidity 0,07 NTU 1 NTU Single value · Wasserwerk Volmarstein

* 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 (12)

Further parameters – Wasserwerk Volmarstein
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 1,77 mmol/l Single value · Wasserwerk Volmarstein
Base capacity to pH 8.2 0,153 mmol/l Single value · Wasserwerk Volmarstein
Calcium 0,957 mmol/l Single value · Wasserwerk Volmarstein
Carbonate hardness 5,2 °dH Single value · Wasserwerk Volmarstein
Hardness range (WRMG) weich Single value · Wasserwerk Volmarstein
Hydrogen carbonate 108,0 mg/l Single value · Wasserwerk Volmarstein
Magnesium 0,302 mmol/l Single value · Wasserwerk Volmarstein
Oxygen 10,0 mg/l Single value · Wasserwerk Volmarstein
Phosphate 0,08 mg/l Single value · Wasserwerk Volmarstein
Potassium 0,113 mmol/l Single value · Wasserwerk Volmarstein
Total hardness 7,3 °dH Single value · Wasserwerk Volmarstein
Zinc 0,002 mg/l Single value · Wasserwerk Volmarstein

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.avu.de/wp-content/uploads/AVU-Trinkwasseranalyse-2025.pdf · Jahresmittelwerte 2025 · retrieved on 08/07/2026

Postcodes in this zone: 42399

Frequently asked questions about drinking water in Wuppertal-Beyenburg (dazu gehört u.a. Frielinghausen, Herbringhausen, Spiekern) sowie Dahlhausen, Weuste und Kemna

How hard is the water in Wuppertal-Beyenburg (dazu gehört u.a. Frielinghausen, Herbringhausen, Spiekern) sowie Dahlhausen, Weuste und Kemna?
WSW Wuppertal publishes a total hardness of 11.3 °dH for the supply zone Benrath (hardness range mittel). The hardness range is a classification under the German Detergents and Cleaning Products Act (soft below 8,4 °dH, medium 8,4 to 14 °dH, hard above that) and not a quality verdict — it indicates how much calcium and magnesium is dissolved in the water. Basis: Publication by the water supplier, retrieved on 11/07/2026.
How much nitrate is in the drinking water in Wuppertal-Beyenburg (dazu gehört u.a. Frielinghausen, Herbringhausen, Spiekern) sowie Dahlhausen, Weuste und Kemna?
WSW Wuppertal publishes a nitrate value of 22 mg/l for the supply zone Benrath. The statutory parametric value is 50 mg/l; the measured value represents 44 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
Who supplies the drinking water in Wuppertal-Beyenburg (dazu gehört u.a. Frielinghausen, Herbringhausen, Spiekern) sowie Dahlhausen, Weuste und Kemna?
WSW Wuppertal. The values shown here come from the supply zone Benrath 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.