Skip to content
maunawai.info

Drinking water in 45886

For this postcode the responsible water supplier 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 9 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.

Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350)

Gelsenwasser
Water hardness
7.7 °dH
Hardness range weich
Key values Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350)
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 9,2 mg/l 50 mg/l
18 %
Mean
Lead <0,0005 mg/l
below limit of quantification
10 µg/l
< 5 % *
Mean
Escherichia coli (E. coli) 0 KBE/100 ml 0/100 ml Mean
Sulphate 42 mg/l 250 mg/l
17 %
Mean
Sodium 41 mg/l 200 mg/l
21 %
Mean

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

Show all recorded parameters (59 — most recent value per parameter)

Microbiology (2)

Microbiology – Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350)
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 KBE/100 ml 0/100 ml Mean
Intestinal enterococci 0 KBE/100 ml 0/100 ml Mean

Chemical parameters (26)

Chemical parameters – Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350)
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,05 µg/l
below limit of quantification
3 µg/l
< 2 % *
Mean
Antimony <0,001 mg/l
below limit of quantification
5 µg/l
< 20 % *
Mean
Arsenic <0,0005 mg/l
below limit of quantification
10 µg/l
< 5 % *
Mean
Benzene <0,05 µg/l
below limit of quantification
1 µg/l
< 5 % *
Mean
Benzo(a)pyrene <0,0025 µg/l
below limit of quantification
10 ng/l
< 25 % *
Mean
Bisphenol A <0,015 µg/l
below limit of quantification
2.5 µg/l
< 0.6 % *
Mean
Boron 0,07 mg/l 1 mg/l
7 %
Mean
Bromate <0,0030 mg/l
below limit of quantification
10 µg/l
< 30 % *
Mean
Cadmium <0,0003 mg/l
below limit of quantification
3 µg/l
< 10 % *
Mean
Chlorate <0,003 mg/l
below limit of quantification
70 µg/l
< 4 % *
Mean
Chlorite <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Chromium <0,0004 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean
Copper <0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Fluoride 0,11 mg/l 1.5 mg/l
7 %
Mean
Lead <0,0005 mg/l
below limit of quantification
10 µg/l
< 5 % *
Mean
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Nickel <0,002 mg/l
below limit of quantification
20 µg/l
< 10 % *
Mean
Nitrate 9,2 mg/l 50 mg/l
18 %
Mean
Nitrite 0,01 mg/l 0.5 mg/l
2 %
Mean
Pesticides — Total <0,025 µg/l
below limit of quantification
0.5 µg/l
< 5 % *
Mean
Polycyclic aromatic hydrocarbons <0,005 µg/l
below limit of quantification
0.1 µg/l
< 5 % *
Mean
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Tetrachloroethene and Trichloroethene (sum) <0,05 µg/l
below limit of quantification
10 µg/l
< 0.5 % *
Mean
Trihalomethanes — Total <0,050 µg/l
below limit of quantification
50 µg/l
< 0.1 % *
Mean
Uranium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean

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

Indicator parameters (18)

Indicator parameters – Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350)
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Ammonium <0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Mean
Calcite dissolution capacity 1 mg/l 5 mg/l CaCO3 Mean
Chloride 55 mg/l 250 mg/l
22 %
Mean
Clostridium perfringens (including spores) 0 KBE/100 ml 0/100 ml Mean
Coliform bacteria 0 KBE/100 ml 0/100 ml Mean
Colony count 22 °C 0 KBE/ml ohne anormale Veränderung Mean
Colony count 36 °C 0 KBE/ml ohne anormale Veränderung Mean
Colour <0,10 1/m
below limit of quantification
0.5 m⁻¹ Mean
Conductivity (25 °C) 491 µS/cm 2,790 µS/cm Mean
Iron <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Manganese <0,002 mg/l
below limit of quantification
50 µg/l
< 4 % *
Mean
pH 7,9 6,5–9,5 Mean
Sodium 41 mg/l 200 mg/l
21 %
Mean
Sulphate 42 mg/l 250 mg/l
17 %
Mean
Temperature 14,1 °C Mean
Total organic carbon (TOC) 0,8 mg/l ohne anormale Veränderung Mean
Turbidity <0,05 FNU
below limit of quantification
1 NTU Mean

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

Radiology (2)

Radiology – Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350)
Parameter Value Parametric value Share of the parametric value Reference
Indicative dose <0,1 mSv/a
below limit of quantification
0.1 mSv/a Mean
Radon-222 <10 Bq/l
below limit of quantification
100 Bq/l Mean

Further parameters (11)

Further parameters – Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350)
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 2,2 mmol/l Mean
Base capacity to pH 8.2 0,06 mmol/l Mean
Calcium 42 mg/l Mean
Carbonate hardness 6,2 °dH Mean
Hardness range (WRMG) weich Mean
Magnesium 7,9 mg/l Mean
Oxygen 10,5 mg/l Mean
Phosphate 0,23 mg/l Mean
Potassium 4,4 mg/l Mean
Silicate / silicic acid 4,9 mg/l Mean
Total hardness 7,7 °dH Mean

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Show 9 more supply zones in this postcode

Versorgungsbereich 2 - Nördlich der Ruhr ohne Homberg und Baerl (Ruhrort nur nördlich Vinckekanal)

Stadtwerke Duisburg
Water hardness
10.7 °dH
Hardness range mittel
Key values Versorgungsbereich 2 - Nördlich der Ruhr ohne Homberg und Baerl (Ruhrort nur nördlich Vinckekanal)
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 14 ng/l 0.1 µg/l
14 %
Mean · Q1 2026
Nitrate 11 mg/l 50 mg/l
22 %
Mean · Q1 2026
Lead n.n. µg/l
not detectable
10 µg/l Mean · Q1 2026
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Mean · Q1 2026
Sulphate 50 mg/l 250 mg/l
20 %
Mean · Q1 2026
Sodium 18 mg/l 200 mg/l
9 %
Mean · Q1 2026
Show all recorded parameters (64 — most recent value per parameter)

Microbiology (2)

Microbiology – Versorgungsbereich 2 - Nördlich der Ruhr ohne Homberg und Baerl (Ruhrort nur nördlich Vinckekanal)
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Mean · Q1 2026
Intestinal enterococci 0 KBE/100ml 0/100 ml Mean · Q1 2026

Chemical parameters (28)

Chemical parameters – Versorgungsbereich 2 - Nördlich der Ruhr ohne Homberg und Baerl (Ruhrort nur nördlich Vinckekanal)
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane n.n. µg/l
not detectable
3 µg/l Mean · Q1 2026
Acrylamide n.n. µg/l
not detectable
0.1 µg/l Mean · Q1 2026
Antimony n.n. µg/l
not detectable
5 µg/l Mean · Q1 2026
Arsenic n.n. µg/l
not detectable
10 µg/l Mean · Q1 2026
Benzene n.n. µg/l
not detectable
1 µg/l Mean · Q1 2026
Benzo(a)pyrene n.n. µg/l
not detectable
10 ng/l Mean · Q1 2026
Bisphenol A n.n. µg/l
not detectable
2.5 µg/l Mean · Q1 2026
Boron 49 µg/l 1 mg/l
5 %
Mean · Q1 2026
Bromate n.n. µg/l
not detectable
10 µg/l Mean · Q1 2026
Cadmium n.n. µg/l
not detectable
3 µg/l Mean · Q1 2026
Chlorate 3,0 µg/l 70 µg/l
4 %
Mean · Q1 2026
Chromium n.n. µg/l
not detectable
25 µg/l Mean · Q1 2026
Copper n.n. mg/l
not detectable
2 mg/l Mean · Q1 2026
Cyanide n.n. µg/l
not detectable
50 µg/l Mean · Q1 2026
Epichlorohydrin n.n. µg/l
not detectable
0.1 µg/l Mean · Q1 2026
Fluoride 0,1 mg/l 1.5 mg/l
7 %
Mean · Q1 2026
Lead n.n. µg/l
not detectable
10 µg/l Mean · Q1 2026
Mercury n.n. µg/l
not detectable
1 µg/l Mean · Q1 2026
Nickel 0,9 µg/l 20 µg/l
4 %
Mean · Q1 2026
Nitrate 11 mg/l 50 mg/l
22 %
Mean · Q1 2026
Nitrite n.n. mg/l
not detectable
0.5 mg/l Mean · Q1 2026
Pesticides — Total n.n. µg/l
not detectable
0.5 µg/l Mean · Q1 2026
Polycyclic aromatic hydrocarbons n.n µg/l
not detectable
0.1 µg/l Mean · Q1 2026
Selenium n.n. µg/l
not detectable
10 µg/l Mean · Q1 2026
Tetrachloroethene and Trichloroethene (sum) n.n µg/l
not detectable
10 µg/l Mean · Q1 2026
Trihalomethanes — Total n.n. µg/l
not detectable
50 µg/l Mean · Q1 2026
Uranium 0,4 µg/l 10 µg/l
4 %
Mean · Q1 2026
Vinyl chloride n.n. µg/l
not detectable
0.5 µg/l Mean · Q1 2026

PFAS (2)

PFAS – Versorgungsbereich 2 - Nördlich der Ruhr ohne Homberg und Baerl (Ruhrort nur nördlich Vinckekanal)
Parameter Value Parametric value Share of the parametric value Reference
Sum of 4 PFAS 5,1 ng/l Mean · Q1 2026
Sum of PFAS 14 ng/l 0.1 µg/l
14 %
Mean · Q1 2026

Indicator parameters (20)

Indicator parameters – Versorgungsbereich 2 - Nördlich der Ruhr ohne Homberg und Baerl (Ruhrort nur nördlich Vinckekanal)
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 12 µg/l 0.2 mg/l
6 %
Mean · Q1 2026
Ammonium n.n. µg/l
not detectable
0.5 mg/l Mean · Q1 2026
Calcite dissolution capacity eingehalten mg/l 5 mg/l CaCO3 Mean · Q1 2026
Chloride 30 mg/l 250 mg/l
12 %
Mean · Q1 2026
Clostridium perfringens (including spores) 0 KBE/100ml 0/100 ml Mean · Q1 2026
Coliform bacteria 0 KBE/100ml 0/100 ml Mean · Q1 2026
Colony count 22 °C 0 KBE/ml ohne anormale Veränderung Mean · Q1 2026
Colony count 36 °C 1 KBE/ml ohne anormale Veränderung Mean · Q1 2026
Colour 0,2 1/m 0.5 m⁻¹ Mean · Q1 2026
Conductivity (25 °C) 477 µS/cm 2,790 µS/cm Mean · Q1 2026
Iron n.n. mg/l
not detectable
0.2 mg/l Mean · Q1 2026
Manganese 1,7 µg/l 50 µg/l
3 %
Mean · Q1 2026
Odour ohne für den Verbraucher annehmbar Mean · Q1 2026
pH 7,4 6,5–9,5 Mean · Q1 2026
Sodium 18 mg/l 200 mg/l
9 %
Mean · Q1 2026
Sulphate 50 mg/l 250 mg/l
20 %
Mean · Q1 2026
Taste ohne für den Verbraucher annehmbar Mean · Q1 2026
Temperature 11 °C Mean · Q1 2026
Total organic carbon (TOC) eingehalten mg/l ohne anormale Veränderung Mean · Q1 2026
Turbidity 0,1 NTU 1 NTU Mean · Q1 2026

Further parameters (12)

Further parameters – Versorgungsbereich 2 - Nördlich der Ruhr ohne Homberg und Baerl (Ruhrort nur nördlich Vinckekanal)
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 2,8 mol/m³ Mean · Q1 2026
Base capacity to pH 8.2 0,2 mol/m³ Mean · Q1 2026
Calcium 70 mg/l Mean · Q1 2026
Carbonate hardness 7,9 °dH Mean · Q1 2026
Hardness range (WRMG) mittel Mean · Q1 2026
Magnesium 4,8 mg/l Mean · Q1 2026
Oxygen 7,8 mg/l Mean · Q1 2026
Phosphate n.n. mg/l
not detectable
Mean · Q1 2026
Potassium 4,8 mg/l Mean · Q1 2026
Silicate / silicic acid 8,1 mg/l Mean · Q1 2026
Spectral absorption coefficient 254 nm (SAC 254) 6,1 1/m Mean · Q1 2026
Total hardness 1,9 mmol/l Mean · Q1 2026

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-duisburg.de/fileadmin/user_upload/Veroeffentlichungen/Trinkwasseranalyse_Nord.pdf · Jahresmittelwerte 2025 und Quartal 2026/1 · retrieved on 11/07/2026
Water hardness
11.3 °dH
Hardness range mittel
Key values Haltern
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 11,6 mg/l 50 mg/l
23 %
Mean
Lead <0,0005 mg/l
below limit of quantification
10 µg/l
< 5 % *
Mean
Escherichia coli (E. coli) 0 KBE/100 ml 0/100 ml Mean
Sulphate 48 mg/l 250 mg/l
19 %
Mean
Sodium 19 mg/l 200 mg/l
9 %
Mean

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

Show all recorded parameters (59 — most recent value per parameter)

Microbiology (2)

Microbiology – Haltern
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 KBE/100 ml 0/100 ml Mean
Intestinal enterococci 0 KBE/100 ml 0/100 ml Mean

Chemical parameters (26)

Chemical parameters – Haltern
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,05 µg/l
below limit of quantification
3 µg/l
< 2 % *
Mean
Antimony <0,001 mg/l
below limit of quantification
5 µg/l
< 20 % *
Mean
Arsenic 0,0007 mg/l 10 µg/l
7 %
Mean
Benzene <0,05 µg/l
below limit of quantification
1 µg/l
< 5 % *
Mean
Benzo(a)pyrene <0,0025 µg/l
below limit of quantification
10 ng/l
< 25 % *
Mean
Bisphenol A <0,015 µg/l
below limit of quantification
2.5 µg/l
< 0.6 % *
Mean
Boron 0,06 mg/l 1 mg/l
6 %
Mean
Bromate <0,0030 mg/l
below limit of quantification
10 µg/l
< 30 % *
Mean
Cadmium <0,0003 mg/l
below limit of quantification
3 µg/l
< 10 % *
Mean
Chlorate 0,003 mg/l 70 µg/l
4 %
Mean
Chlorite <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Chromium <0,0004 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean
Copper <0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Fluoride 0,16 mg/l 1.5 mg/l
11 %
Mean
Lead <0,0005 mg/l
below limit of quantification
10 µg/l
< 5 % *
Mean
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Nickel <0,002 mg/l
below limit of quantification
20 µg/l
< 10 % *
Mean
Nitrate 11,6 mg/l 50 mg/l
23 %
Mean
Nitrite 0,06 mg/l 0.5 mg/l
12 %
Mean
Pesticides — Total <0,025 µg/l
below limit of quantification
0.5 µg/l
< 5 % *
Mean
Polycyclic aromatic hydrocarbons <0,005 µg/l
below limit of quantification
0.1 µg/l
< 5 % *
Mean
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Tetrachloroethene and Trichloroethene (sum) <0,05 µg/l
below limit of quantification
10 µg/l
< 0.5 % *
Mean
Trihalomethanes — Total 0,05 µg/l 50 µg/l
0.1 %
Mean
Uranium 0,001 mg/l 10 µg/l
10 %
Mean

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

Indicator parameters (18)

Indicator parameters – Haltern
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Ammonium <0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Mean
Calcite dissolution capacity 0 mg/l 5 mg/l CaCO3 Mean
Chloride 26 mg/l 250 mg/l
10 %
Mean
Clostridium perfringens (including spores) 0 KBE/100 ml 0/100 ml Mean
Coliform bacteria 0 KBE/100 ml 0/100 ml Mean
Colony count 22 °C 0 KBE/ml ohne anormale Veränderung Mean
Colony count 36 °C 0 KBE/ml ohne anormale Veränderung Mean
Colour 0,2 1/m 0.5 m⁻¹ Mean
Conductivity (25 °C) 487 µS/cm 2,790 µS/cm Mean
Iron <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Manganese 0,002 mg/l 50 µg/l
4 %
Mean
pH 7,55 6,5–9,5 Mean
Sodium 19 mg/l 200 mg/l
9 %
Mean
Sulphate 48 mg/l 250 mg/l
19 %
Mean
Temperature 13,3 °C Mean
Total organic carbon (TOC) 3 mg/l ohne anormale Veränderung Mean
Turbidity <0,05 FNU
below limit of quantification
1 NTU Mean

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

Radiology (2)

Radiology – Haltern
Parameter Value Parametric value Share of the parametric value Reference
Indicative dose <0,1 mSv/a
below limit of quantification
0.1 mSv/a Mean
Radon-222 <10 Bq/l
below limit of quantification
100 Bq/l Mean

Further parameters (11)

Further parameters – Haltern
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 2,97 mmol/l Mean
Base capacity to pH 8.2 0,21 mmol/l Mean
Calcium 73 mg/l Mean
Carbonate hardness 8,4 °dH Mean
Hardness range (WRMG) mittel Mean
Magnesium 4,8 mg/l Mean
Oxygen 6,9 mg/l Mean
Phosphate 0,12 mg/l Mean
Potassium 5,3 mg/l Mean
Silicate / silicic acid 8,6 mg/l Mean
Total hardness 11,3 °dH Mean

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Wasserwerk Bucholtwelmen

Gelsenwasser

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

Water hardness
14.7 °dH
Hardness range hart
Key values Wasserwerk Bucholtwelmen
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 15 mg/l 50 mg/l
30 %
Mean
Lead <0,0005 mg/l
below limit of quantification
10 µg/l
< 5 % *
Mean
Escherichia coli (E. coli) 0 KBE/100 ml 0/100 ml Mean
Sulphate 83 mg/l 250 mg/l
33 %
Mean
Sodium 15 mg/l 200 mg/l
8 %
Mean

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

Show all recorded parameters (57 — most recent value per parameter)

Microbiology (2)

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

Chemical parameters (24)

Chemical parameters – Wasserwerk Bucholtwelmen
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,05 µg/l
below limit of quantification
3 µg/l
< 2 % *
Mean
Antimony <0,001 mg/l
below limit of quantification
5 µg/l
< 20 % *
Mean
Arsenic <0,0005 mg/l
below limit of quantification
10 µg/l
< 5 % *
Mean
Benzene <0,05 µg/l
below limit of quantification
1 µg/l
< 5 % *
Mean
Benzo(a)pyrene <0,0025 µg/l
below limit of quantification
10 ng/l
< 25 % *
Mean
Bisphenol A <0,015 µg/l
below limit of quantification
2.5 µg/l
< 0.6 % *
Mean
Boron 0,05 mg/l 1 mg/l
5 %
Mean
Bromate <0,0030 mg/l
below limit of quantification
10 µg/l
< 30 % *
Mean
Cadmium <0,0003 mg/l
below limit of quantification
3 µg/l
< 10 % *
Mean
Chromium <0,0004 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean
Copper <0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Fluoride 0,1 mg/l 1.5 mg/l
7 %
Mean
Lead <0,0005 mg/l
below limit of quantification
10 µg/l
< 5 % *
Mean
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Nickel <0,002 mg/l
below limit of quantification
20 µg/l
< 10 % *
Mean
Nitrate 15 mg/l 50 mg/l
30 %
Mean
Nitrite <0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean
Pesticides — Total <0,025 µg/l
below limit of quantification
0.5 µg/l
< 5 % *
Mean
Polycyclic aromatic hydrocarbons <0,005 µg/l
below limit of quantification
0.1 µg/l
< 5 % *
Mean
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Tetrachloroethene and Trichloroethene (sum) 0,06 µg/l 10 µg/l
0.6 %
Mean
Trihalomethanes — Total <0,050 µg/l
below limit of quantification
50 µg/l
< 0.1 % *
Mean
Uranium 0,001 mg/l 10 µg/l
10 %
Mean

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

Indicator parameters (18)

Indicator parameters – Wasserwerk Bucholtwelmen
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Ammonium <0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Mean
Calcite dissolution capacity 2 mg/l 5 mg/l CaCO3 Mean
Chloride 27 mg/l 250 mg/l
11 %
Mean
Clostridium perfringens (including spores) 0 KBE/100 ml 0/100 ml Mean
Coliform bacteria 0 KBE/100 ml 0/100 ml Mean
Colony count 22 °C 0 KBE/ml ohne anormale Veränderung Mean
Colony count 36 °C 0 KBE/ml ohne anormale Veränderung Mean
Colour 0,1 1/m 0.5 m⁻¹ Mean
Conductivity (25 °C) 606 µS/cm 2,790 µS/cm Mean
Iron <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Manganese <0,002 mg/l
below limit of quantification
50 µg/l
< 4 % *
Mean
pH 7,42 6,5–9,5 Mean
Sodium 15 mg/l 200 mg/l
8 %
Mean
Sulphate 83 mg/l 250 mg/l
33 %
Mean
Temperature 11,1 °C Mean
Total organic carbon (TOC) 2,1 mg/l ohne anormale Veränderung Mean
Turbidity 0,05 FNU 1 NTU Mean

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

Radiology (2)

Radiology – Wasserwerk Bucholtwelmen
Parameter Value Parametric value Share of the parametric value Reference
Indicative dose <0,1 mSv/a
below limit of quantification
0.1 mSv/a Mean
Radon-222 13 Bq/l 100 Bq/l Mean

Further parameters (11)

Further parameters – Wasserwerk Bucholtwelmen
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 3,45 mmol/l Mean
Base capacity to pH 8.2 0,34 mmol/l Mean
Calcium 93 mg/l Mean
Carbonate hardness 9,7 °dH Mean
Hardness range (WRMG) hart Mean
Magnesium 7,6 mg/l Mean
Oxygen 6,8 mg/l Mean
Phosphate 0,06 mg/l Mean
Potassium 5,5 mg/l Mean
Silicate / silicic acid 12,4 mg/l Mean
Total hardness 14,7 °dH Mean

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Versorgungsgebiet der Stadtwerke Essen AG (Herkunft des Trinkwassers: Verbundwasserwerk Essen, Wassergewinnung Essen GmbH)

Gelsenwasser

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

Water hardness
Hardness range 1,38
Key values Versorgungsgebiet der Stadtwerke Essen AG (Herkunft des Trinkwassers: Verbundwasserwerk Essen, Wassergewinnung Essen GmbH)
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 9 mg/l 50 mg/l
18 %
Median
Sulphate 42 mg/l 250 mg/l
17 %
Median
Sodium 41 mg/l 200 mg/l
21 %
Median
Show all recorded parameters (17 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Versorgungsgebiet der Stadtwerke Essen AG (Herkunft des Trinkwassers: Verbundwasserwerk Essen, Wassergewinnung Essen GmbH)
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 9 mg/l 50 mg/l
18 %
Median

Indicator parameters (8)

Indicator parameters – Versorgungsgebiet der Stadtwerke Essen AG (Herkunft des Trinkwassers: Verbundwasserwerk Essen, Wassergewinnung Essen GmbH)
Parameter Value Parametric value Share of the parametric value Reference
Calcite dissolution capacity 0,8 mg/l 5 mg/l CaCO3 Median
Chloride 55 mg/l 250 mg/l
22 %
Median
Conductivity (25 °C) 491 µS/cm 2,790 µS/cm Median
pH 7,90 6,5–9,5 Median
Sodium 41 mg/l 200 mg/l
21 %
Median
Sulphate 42 mg/l 250 mg/l
17 %
Median
Temperature 14,1 °C Median
Total organic carbon (TOC) 0,8 mg/l ohne anormale Veränderung Median

Further parameters (8)

Further parameters – Versorgungsgebiet der Stadtwerke Essen AG (Herkunft des Trinkwassers: Verbundwasserwerk Essen, Wassergewinnung Essen GmbH)
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 2,20 mmol/l Median
Base capacity to pH 8.2 0,06 mmol/l Median
Calcium 42 mg/l Median
Hardness range (WRMG) 1,38 mmol/l Median
Magnesium 7,9 mg/l Median
Oxygen 10,5 mg/l Median
Potassium 4,4 mg/l Median
Silicate / silicic acid 2,3 mg/l Median

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.gelsenwasser.de/fileadmin/Gelsenwasser/80_footer/8.1-tw_parameter/essen_inst.pdf · Median 2025 (Jahresmittelwert) · retrieved on 13/07/2026

Wasserwerk Haltern

Gelsenwasser

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

Water hardness
Hardness range 2,02
Key values Wasserwerk Haltern
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 12 mg/l 50 mg/l
24 %
Median
Sulphate 48 mg/l 250 mg/l
19 %
Median
Sodium 19 mg/l 200 mg/l
9 %
Median
Show all recorded parameters (17 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Wasserwerk Haltern
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 12 mg/l 50 mg/l
24 %
Median

Indicator parameters (8)

Indicator parameters – Wasserwerk Haltern
Parameter Value Parametric value Share of the parametric value Reference
Calcite dissolution capacity 0,2 mg/l 5 mg/l CaCO3 Median
Chloride 26 mg/l 250 mg/l
10 %
Median
Conductivity (25 °C) 487 µS/cm 2,790 µS/cm Median
pH 7,55 6,5–9,5 Median
Sodium 19 mg/l 200 mg/l
9 %
Median
Sulphate 48 mg/l 250 mg/l
19 %
Median
Temperature 13,3 °C Median
Total organic carbon (TOC) 3,0 mg/l ohne anormale Veränderung Median

Further parameters (8)

Further parameters – Wasserwerk Haltern
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 2,97 mmol/l Median
Base capacity to pH 8.2 0,21 mmol/l Median
Calcium 73 mg/l Median
Hardness range (WRMG) 2,02 mmol/l Median
Magnesium 4,8 mg/l Median
Oxygen 6,9 mg/l Median
Potassium 5,3 mg/l Median
Silicate / silicic acid 4,0 mg/l Median

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.

Wasserwerk Haltern, Gelsenwasser AG

Gelsenwasser

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

Water hardness
Hardness range 2,02
Key values Wasserwerk Haltern, Gelsenwasser AG
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 12 mg/l 50 mg/l
24 %
Median
Sulphate 48 mg/l 250 mg/l
19 %
Median
Sodium 19 mg/l 200 mg/l
9 %
Median
Show all recorded parameters (17 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Wasserwerk Haltern, Gelsenwasser AG
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 12 mg/l 50 mg/l
24 %
Median

Indicator parameters (8)

Indicator parameters – Wasserwerk Haltern, Gelsenwasser AG
Parameter Value Parametric value Share of the parametric value Reference
Calcite dissolution capacity 0,2 mg/l 5 mg/l CaCO3 Median
Chloride 26 mg/l 250 mg/l
10 %
Median
Conductivity (25 °C) 487 µS/cm 2,790 µS/cm Median
pH 7,55 6,5–9,5 Median
Sodium 19 mg/l 200 mg/l
9 %
Median
Sulphate 48 mg/l 250 mg/l
19 %
Median
Temperature 13,3 °C Median
Total organic carbon (TOC) 3,0 mg/l ohne anormale Veränderung Median

Further parameters (8)

Further parameters – Wasserwerk Haltern, Gelsenwasser AG
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 2,97 mmol/l Median
Base capacity to pH 8.2 0,21 mmol/l Median
Calcium 73 mg/l Median
Hardness range (WRMG) 2,02 mmol/l Median
Magnesium 4,8 mg/l Median
Oxygen 6,9 mg/l Median
Potassium 5,3 mg/l Median
Silicate / silicic acid 4,0 mg/l Median

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.

Wasserwerk Echthausen Ortsteile Hemmerde, Lünern, Siddinghausen, Westhemmerde (Mischwasser)

Gelsenwasser

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

No date is given for these values. The water supplier publishes the analysis without a sampling date and without a report date. When the water was examined is not apparent from the source — we do not add a date and we do not estimate one. What is stated is therefore only when we retrieved the document.

Water hardness
Hardness range weich

No core values are available for this zone yet.

Show all recorded parameters (1 — most recent value per parameter)

Further parameters (1)

Further parameters – Wasserwerk Echthausen Ortsteile Hemmerde, Lünern, Siddinghausen, Westhemmerde (Mischwasser)
Parameter Value Parametric value Share of the parametric value Reference
Hardness range (WRMG) weich Single value · Wasserwerk Echthausen – Ortsteile Hemmerde, Lünern, Siddinghausen, Westhemmerde (Mischwasser)

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.gelsenwasser.de/wasser/wasserhaerte/unna · retrieved on 11/07/2026

Wasserwerk Halingen/Fröndenberg Ortsteile Hemmerde, Lünern, Siddinghausen, Westhemmerde (Mischwasser)

Gelsenwasser

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

No date is given for these values. The water supplier publishes the analysis without a sampling date and without a report date. When the water was examined is not apparent from the source — we do not add a date and we do not estimate one. What is stated is therefore only when we retrieved the document.

Water hardness
Hardness range weich

No core values are available for this zone yet.

Show all recorded parameters (1 — most recent value per parameter)

Further parameters (1)

Further parameters – Wasserwerk Halingen/Fröndenberg Ortsteile Hemmerde, Lünern, Siddinghausen, Westhemmerde (Mischwasser)
Parameter Value Parametric value Share of the parametric value Reference
Hardness range (WRMG) weich Single value · Wasserwerk Halingen/Fröndenberg – Ortsteile Hemmerde, Lünern, Siddinghausen, Westhemmerde (Mischwasser)

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.gelsenwasser.de/wasser/wasserhaerte/unna · retrieved on 11/07/2026

Wasserwerk Halingen/Fröndenberg Übriges Stadtgebiet Unna

Gelsenwasser

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

No date is given for these values. The water supplier publishes the analysis without a sampling date and without a report date. When the water was examined is not apparent from the source — we do not add a date and we do not estimate one. What is stated is therefore only when we retrieved the document.

Water hardness
Hardness range weich

No core values are available for this zone yet.

Show all recorded parameters (1 — most recent value per parameter)

Further parameters (1)

Further parameters – Wasserwerk Halingen/Fröndenberg Übriges Stadtgebiet Unna
Parameter Value Parametric value Share of the parametric value Reference
Hardness range (WRMG) weich Single value · Wasserwerk Halingen/Fröndenberg – Übriges Stadtgebiet Unna

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.gelsenwasser.de/wasser/wasserhaerte/unna · retrieved on 11/07/2026

Frequent questions about postcode 45886

How hard is the water in Postcode 45886?
Gelsenwasser publishes a total hardness of 7.7 °dH for the supply zone Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350) (hardness range weich). 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 Postcode 45886?
Gelsenwasser publishes a nitrate value of 9,2 mg/l for the supply zone Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350). The statutory parametric value is 50 mg/l; the measured value represents 18 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
Who supplies the drinking water in Postcode 45886?
Gelsenwasser. The values shown here come from the supply zone Verbundwasserwerk Essen; Entnahmestelle: Trinkwasser Essen nach UV Ltg. Überruhr, WAA 2 (00-0350) 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.