How hard is the water in Postcode 44628?

Stadtwerke Duisburg publishes a total hardness of 1,9 mmol/l for the supply zone Versorgungsbereich 2 - Nördlich der Ruhr ohne Homberg und Baerl (Ruhrort nur nördlich Vinckekanal) — that corresponds to 10.7 °dH. The hardness range is a classification under the German Detergents and Cleaning Products Act (soft below 8,4 °dH, medium 8,4 to 14 °dH, hard above that) and not a quality verdict — it indicates how much calcium and magnesium is dissolved in the water. Basis: Publication by the water supplier, retrieved on 11/07/2026.

How much nitrate is in the drinking water in Postcode 44628?

Stadtwerke Duisburg publishes a nitrate value of 11 mg/l for the supply zone Versorgungsbereich 2 - Nördlich der Ruhr ohne Homberg und Baerl (Ruhrort nur nördlich Vinckekanal). The statutory parametric value is 50 mg/l; the measured value represents 22 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.

Are PFAS detectable in the drinking water in Postcode 44628?

Stadtwerke Duisburg publishes for the supply zone Versorgungsbereich 2 - Nördlich der Ruhr ohne Homberg und Baerl (Ruhrort nur nördlich Vinckekanal) a sum value PFAS-20 of 14 ng/l (0.014 µg/l). The statutory parametric value is 0.1 µg/l; the measured value represents 14 % of the parametric value. For the sum of the 20 individual substances, this parametric value has applied since 12/01/2026. Basis: Publication by the water supplier, retrieved on 11/07/2026.

Who supplies the drinking water in Postcode 44628?

Stadtwerke Duisburg. The values shown here come from the supply zone Versorgungsbereich 2 - Nördlich der Ruhr ohne Homberg und Baerl (Ruhrort nur nördlich Vinckekanal) 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.

Drinking water values for postcode 44628 — hardness, nitrate, PFAS-20

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

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 – 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 – 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 – 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 – 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

Haltern

Wasserversorgung Herne GmbH (je 50% Stadtwerke Herne AG und Gelsenwasser AG)

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.

Source: https://www.stadtwerke-herne.de/I.Privatkunden/04-Wasser/Trinkwasseranalyse%20Haltern_2025.pdf · 2025 · retrieved on 11/07/2026

Wasserwerk Witten

Wasserversorgung Herne GmbH (je 50% Stadtwerke Herne AG und Gelsenwasser AG)

Water hardness

7.3 °dH

Hardness range weich

Key values Wasserwerk Witten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	10,7 mg/l	50 mg/l	21 %	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	35 mg/l	250 mg/l	14 %	Mean
Sodium	24 mg/l	200 mg/l	12 %	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 – Wasserwerk Witten
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 – Wasserwerk Witten
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
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	0,09 mg/l	1.5 mg/l	6 %	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	10,7 mg/l	50 mg/l	21 %	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 – Wasserwerk Witten
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	38 mg/l	250 mg/l	15 %	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)	404 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	7,92	6,5–9,5	—	Mean
Sodium	24 mg/l	200 mg/l	12 %	Mean
Sulphate	35 mg/l	250 mg/l	14 %	Mean
Temperature	14,4 °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 – Wasserwerk Witten
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 – Wasserwerk Witten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	1,94 mmol/l	—	—	Mean
Base capacity to pH 8.2	0,04 mmol/l	—	—	Mean
Calcium	41 mg/l	—	—	Mean
Carbonate hardness	5,5 °dH	—	—	Mean
Hardness range (WRMG)	weich	—	—	Mean
Magnesium	6,8 mg/l	—	—	Mean
Oxygen	11,2 mg/l	—	—	Mean
Phosphate	0,19 mg/l	—	—	Mean
Potassium	3,8 mg/l	—	—	Mean
Silicate / silicic acid	5 mg/l	—	—	Mean
Total hardness	7,3 °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.

Source: https://www.stadtwerke-herne.de/I.Privatkunden/04-Wasser/Trinkwasseranalyse%20Witten_2025.pdf · Jahresmittelwert 2025 · retrieved on 11/07/2026

Wasserwerk Echthausen

Wasserwerke Westfalen GmbH

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

Water hardness

7.5 °dH

Hardness range weich

Key values Wasserwerk Echthausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	11,7 mg/l	50 mg/l	23 %	Mean · Wasserwerk Echthausen · Source [1]
Lead	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Echthausen · Source [1]
Escherichia coli (E. coli)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Echthausen · Source [1]
Sulphate	33 mg/l	250 mg/l	13 %	Mean · Wasserwerk Echthausen · Source [1]
Sodium	23 mg/l	200 mg/l	12 %	Mean · Wasserwerk Echthausen · Source [1]

* 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 (70 — most recent value per parameter)

Microbiology (2)

Microbiology – Wasserwerk Echthausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Echthausen · Source [1]
Intestinal enterococci	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Echthausen · Source [1]

Chemical parameters (26)

Chemical parameters – Wasserwerk Echthausen
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 · Source [2]
Antimony	< 1,0 µg/l below limit of quantification	5 µg/l	< 20 % *	Mean · Wasserwerk Echthausen · Source [1]
Arsenic	< 0,5 µg/l below limit of quantification	10 µg/l	< 5 % *	Mean · Wasserwerk Echthausen · Source [1]
Benzene	<0,05 µg/l below limit of quantification	1 µg/l	< 5 % *	Mean · Source [2]
Benzo(a)pyrene	<0,0025 µg/l below limit of quantification	10 ng/l	< 25 % *	Mean · Source [2]
Bisphenol A	<0,015 µg/l below limit of quantification	2.5 µg/l	< 0.6 % *	Mean · Source [2]
Boron	< 0,05 mg/l below limit of quantification	1 mg/l	< 5 % *	Mean · Wasserwerk Echthausen · Source [1]
Bromate	< 0,0030 mg/l below limit of quantification	10 µg/l	< 30 % *	Mean · Wasserwerk Echthausen · Source [1]
Cadmium	< 0,3 µg/l below limit of quantification	3 µg/l	< 10 % *	Mean · Wasserwerk Echthausen · Source [1]
Chlorate	< 0,00 mg/l below limit of quantification	70 µg/l	< 0 % *	Mean · Wasserwerk Echthausen · Source [1]
Chlorite	< 0,01 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Echthausen · Source [1]
Chromium	< 0,4 µg/l below limit of quantification	25 µg/l	< 2 % *	Mean · Wasserwerk Echthausen · Source [1]
Copper	< 5 µg/l below limit of quantification	2 mg/l	< 0.3 % *	Mean · Wasserwerk Echthausen · Source [1]
Cyanide	< 0,005 mg/l below limit of quantification	50 µg/l	< 10 % *	Mean · Wasserwerk Echthausen · Source [1]
Fluoride	0,07 mg/l	1.5 mg/l	5 %	Mean · Wasserwerk Echthausen · Source [1]
Lead	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Echthausen · Source [1]
Mercury	< 0,10 µg/l below limit of quantification	1 µg/l	< 10 % *	Mean · Wasserwerk Echthausen · Source [1]
Nickel	< 2 µg/l below limit of quantification	20 µg/l	< 10 % *	Mean · Wasserwerk Echthausen · Source [1]
Nitrate	11,7 mg/l	50 mg/l	23 %	Mean · Wasserwerk Echthausen · Source [1]
Nitrite	0,01 mg/l	0.5 mg/l	2 %	Mean · Wasserwerk Echthausen · Source [1]
Pesticides — Total	<0,025 µg/l below limit of quantification	0.5 µg/l	< 5 % *	Mean · Source [2]
Polycyclic aromatic hydrocarbons	<0,005 µg/l below limit of quantification	0.1 µg/l	< 5 % *	Mean · Source [2]
Selenium	< 1,0 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Echthausen · Source [1]
Tetrachloroethene and Trichloroethene (sum)	<0,05 µg/l below limit of quantification	10 µg/l	< 0.5 % *	Mean · Source [2]
Trihalomethanes — Total	<0,050 µg/l below limit of quantification	50 µg/l	< 0.1 % *	Mean · Source [2]
Uranium	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Echthausen · Source [1]

* 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 (20)

Indicator parameters – Wasserwerk Echthausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	< 10 µg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Echthausen · Source [1]
Ammonium	< 0,05 mg/l below limit of quantification	0.5 mg/l	< 10 % *	Mean · Wasserwerk Echthausen · Source [1]
Calcite dissolution capacity	0 mg/l	5 mg/l CaCO3	—	Mean · Source [2]
Chloride	37 mg/l	250 mg/l	15 %	Mean · Wasserwerk Echthausen · Source [1]
Clostridium perfringens (including spores)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Echthausen · Source [1]
Coliform bacteria	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Echthausen · Source [1]
Colony count 22 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Wasserwerk Echthausen · Source [1]
Colony count 36 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Wasserwerk Echthausen · Source [1]
Colour	< 0,10 1/m below limit of quantification	0.5 m⁻¹	—	Mean · Wasserwerk Echthausen · Source [1]
Conductivity (25 °C)	403 µS/cm	2,790 µS/cm	—	Mean · Wasserwerk Echthausen · Source [1]
Iron	< 0,010 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Echthausen · Source [1]
Manganese	< 0,002 mg/l below limit of quantification	50 µg/l	< 4 % *	Mean · Wasserwerk Echthausen · Source [1]
Odour	unauffällig	für den Verbraucher annehmbar	—	Mean · Wasserwerk Echthausen · Source [1]
pH	7,86	6,5–9,5	—	Mean · Wasserwerk Echthausen · Source [1]
Sodium	23 mg/l	200 mg/l	12 %	Mean · Wasserwerk Echthausen · Source [1]
Sulphate	33 mg/l	250 mg/l	13 %	Mean · Wasserwerk Echthausen · Source [1]
Taste	unauffällig	für den Verbraucher annehmbar	—	Mean · Wasserwerk Echthausen · Source [1]
Temperature	5,2 °C	—	—	Mean · Wasserwerk Echthausen · Source [1]
Total organic carbon (TOC)	0,9 mg/l	ohne anormale Veränderung	—	Mean · Wasserwerk Echthausen · Source [1]
Turbidity	< 0,05 FNU below limit of quantification	1 NTU	—	Mean · Wasserwerk Echthausen · Source [1]

* 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 Echthausen
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 · Source [2]
Radon-222	<10 Bq/l below limit of quantification	100 Bq/l	—	Mean · Source [2]

Further parameters (20)

Further parameters – Wasserwerk Echthausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	1,96 mmol/l	—	—	Mean · Wasserwerk Echthausen · Source [1]
Barium	18 µg/l	—	—	Mean · Wasserwerk Echthausen · Source [1]
Base capacity to pH 8.2	0,05 mmol/l	—	—	Mean · Wasserwerk Echthausen · Source [1]
Bromide	< 0,05 mg/l below limit of quantification	—	—	Mean · Wasserwerk Echthausen · Source [1]
Calcium	44 mg/l	—	—	Mean · Wasserwerk Echthausen · Source [1]
Carbonate hardness	5,5 °dH	—	—	Mean · Wasserwerk Echthausen · Source [1]
Dissolved organic carbon (DOC)	0,8 mg/l	—	—	Mean · Wasserwerk Echthausen · Source [1]
Gadolinium	< 0,1 µg/l below limit of quantification	—	—	Mean · Wasserwerk Echthausen · Source [1]
Hardness range (WRMG)	weich	—	—	Mean · Wasserwerk Echthausen · Source [1]
Lanthanum	< 0,1 µg/l below limit of quantification	—	—	Mean · Wasserwerk Echthausen · Source [1]
Lithium	< 5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Echthausen · Source [1]
Magnesium	6 mg/l	—	—	Mean · Wasserwerk Echthausen · Source [1]
Oxygen	13,1 mg/l	—	—	Mean · Wasserwerk Echthausen · Source [1]
Phosphate	0,12 mg/l	—	—	Mean · Wasserwerk Echthausen · Source [1]
Potassium	2 mg/l	—	—	Mean · Wasserwerk Echthausen · Source [1]
Silicate / silicic acid	1700 µg/l	—	—	Mean · Wasserwerk Echthausen · Source [1]
Strontium	0,17 mg/l	—	—	Mean · Wasserwerk Echthausen · Source [1]
Total hardness	7,5 °dH	—	—	Mean · Wasserwerk Echthausen · Source [1]
Vanadium	< 0,5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Echthausen · Source [1]
Zinc	< 5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Echthausen · Source [1]

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.

Sources: [1] https://www.gelsenwasser.de/twa-gelsenwasser?apikey=edr56zgt54 · Quartals-Mittel 2026/1 · Quartals-Mittel 2026/1 · retrieved on 17/08/2026 [2] https://www.gelsenwasser.de/fileadmin/twa/downloads/www/trinkwasseranalyse_echthausen.pdf · Jahresmittelwert 2025 · retrieved on 25/07/2026

Wasserwerk Halingen

Wasserwerke Westfalen GmbH

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

Water hardness

8.3 °dH

Hardness range weich

Key values Wasserwerk Halingen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	13,3 mg/l	50 mg/l	27 %	Mean · Wasserwerk Halingen · Source [1]
Lead	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Halingen · Source [1]
Escherichia coli (E. coli)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Halingen · Source [1]
Sulphate	36 mg/l	250 mg/l	14 %	Mean · Wasserwerk Halingen · Source [1]
Sodium	31 mg/l	200 mg/l	16 %	Mean · Wasserwerk Halingen · Source [1]

* 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 (70 — most recent value per parameter)

Microbiology (2)

Microbiology – Wasserwerk Halingen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Halingen · Source [1]
Intestinal enterococci	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Halingen · Source [1]

Chemical parameters (26)

Chemical parameters – Wasserwerk Halingen
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 · Source [2]
Antimony	< 1,0 µg/l below limit of quantification	5 µg/l	< 20 % *	Mean · Wasserwerk Halingen · Source [1]
Arsenic	< 0,5 µg/l below limit of quantification	10 µg/l	< 5 % *	Mean · Wasserwerk Halingen · Source [1]
Benzene	<0,05 µg/l below limit of quantification	1 µg/l	< 5 % *	Mean · Source [2]
Benzo(a)pyrene	<0,0025 µg/l below limit of quantification	10 ng/l	< 25 % *	Mean · Source [2]
Bisphenol A	<0,015 µg/l below limit of quantification	2.5 µg/l	< 0.6 % *	Mean · Source [2]
Boron	< 0,05 mg/l below limit of quantification	1 mg/l	< 5 % *	Mean · Wasserwerk Halingen · Source [1]
Bromate	< 0,0030 mg/l below limit of quantification	10 µg/l	< 30 % *	Mean · Wasserwerk Halingen · Source [1]
Cadmium	< 0,3 µg/l below limit of quantification	3 µg/l	< 10 % *	Mean · Wasserwerk Halingen · Source [1]
Chlorate	< 0,00 mg/l below limit of quantification	70 µg/l	< 0 % *	Mean · Wasserwerk Halingen · Source [1]
Chlorite	< 0,01 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Halingen · Source [1]
Chromium	0,4 µg/l	25 µg/l	2 %	Mean · Wasserwerk Halingen · Source [1]
Copper	< 5 µg/l below limit of quantification	2 mg/l	< 0.3 % *	Mean · Wasserwerk Halingen · Source [1]
Cyanide	< 0,005 mg/l below limit of quantification	50 µg/l	< 10 % *	Mean · Wasserwerk Halingen · Source [1]
Fluoride	0,07 mg/l	1.5 mg/l	5 %	Mean · Wasserwerk Halingen · Source [1]
Lead	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Halingen · Source [1]
Mercury	< 0,10 µg/l below limit of quantification	1 µg/l	< 10 % *	Mean · Wasserwerk Halingen · Source [1]
Nickel	< 2 µg/l below limit of quantification	20 µg/l	< 10 % *	Mean · Wasserwerk Halingen · Source [1]
Nitrate	13,3 mg/l	50 mg/l	27 %	Mean · Wasserwerk Halingen · Source [1]
Nitrite	0,01 mg/l	0.5 mg/l	2 %	Mean · Wasserwerk Halingen · Source [1]
Pesticides — Total	<0,025 µg/l below limit of quantification	0.5 µg/l	< 5 % *	Mean · Source [2]
Polycyclic aromatic hydrocarbons	<0,005 µg/l below limit of quantification	0.1 µg/l	< 5 % *	Mean · Source [2]
Selenium	< 1,0 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Halingen · Source [1]
Tetrachloroethene and Trichloroethene (sum)	0,06 µg/l	10 µg/l	0.6 %	Mean · Source [2]
Trihalomethanes — Total	<0,050 µg/l below limit of quantification	50 µg/l	< 0.1 % *	Mean · Source [2]
Uranium	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Halingen · Source [1]

* 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 (20)

Indicator parameters – Wasserwerk Halingen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	< 10 µg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Halingen · Source [1]
Ammonium	< 0,05 mg/l below limit of quantification	0.5 mg/l	< 10 % *	Mean · Wasserwerk Halingen · Source [1]
Calcite dissolution capacity	1 mg/l	5 mg/l CaCO3	—	Mean · Source [2]
Chloride	48 mg/l	250 mg/l	19 %	Mean · Wasserwerk Halingen · Source [1]
Clostridium perfringens (including spores)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Halingen · Source [1]
Coliform bacteria	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Halingen · Source [1]
Colony count 22 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Wasserwerk Halingen · Source [1]
Colony count 36 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Wasserwerk Halingen · Source [1]
Colour	< 0,10 1/m below limit of quantification	0.5 m⁻¹	—	Mean · Wasserwerk Halingen · Source [1]
Conductivity (25 °C)	459 µS/cm	2,790 µS/cm	—	Mean · Wasserwerk Halingen · Source [1]
Iron	< 0,010 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Halingen · Source [1]
Manganese	< 0,002 mg/l below limit of quantification	50 µg/l	< 4 % *	Mean · Wasserwerk Halingen · Source [1]
Odour	unauffällig	für den Verbraucher annehmbar	—	Mean · Wasserwerk Halingen · Source [1]
pH	7,84	6,5–9,5	—	Mean · Wasserwerk Halingen · Source [1]
Sodium	31 mg/l	200 mg/l	16 %	Mean · Wasserwerk Halingen · Source [1]
Sulphate	36 mg/l	250 mg/l	14 %	Mean · Wasserwerk Halingen · Source [1]
Taste	unauffällig	für den Verbraucher annehmbar	—	Mean · Wasserwerk Halingen · Source [1]
Temperature	6,1 °C	—	—	Mean · Wasserwerk Halingen · Source [1]
Total organic carbon (TOC)	0,9 mg/l	ohne anormale Veränderung	—	Mean · Wasserwerk Halingen · Source [1]
Turbidity	< 0,05 FNU below limit of quantification	1 NTU	—	Mean · Wasserwerk Halingen · Source [1]

* 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 Halingen
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 · Source [2]
Radon-222	15 Bq/l	100 Bq/l	—	Mean · Source [2]

Further parameters (20)

Further parameters – Wasserwerk Halingen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	2,19 mmol/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Barium	22 µg/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Base capacity to pH 8.2	0,07 mmol/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Bromide	< 0,05 mg/l below limit of quantification	—	—	Mean · Wasserwerk Halingen · Source [1]
Calcium	49 mg/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Carbonate hardness	6,1 °dH	—	—	Mean · Wasserwerk Halingen · Source [1]
Dissolved organic carbon (DOC)	0,8 mg/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Gadolinium	< 0,1 µg/l below limit of quantification	—	—	Mean · Wasserwerk Halingen · Source [1]
Hardness range (WRMG)	weich	—	—	Mean · Wasserwerk Halingen · Source [1]
Lanthanum	< 0,1 µg/l below limit of quantification	—	—	Mean · Wasserwerk Halingen · Source [1]
Lithium	5 µg/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Magnesium	6,3 mg/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Oxygen	11,1 mg/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Phosphate	0,15 mg/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Potassium	3 mg/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Silicate / silicic acid	2100 µg/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Strontium	0,17 mg/l	—	—	Mean · Wasserwerk Halingen · Source [1]
Total hardness	8,3 °dH	—	—	Mean · Wasserwerk Halingen · Source [1]
Vanadium	< 0,5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Halingen · Source [1]
Zinc	< 5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Halingen · Source [1]

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.

Sources: [1] https://www.gelsenwasser.de/twa-gelsenwasser?apikey=edr56zgt54 · Quartals-Mittel 2026/1 · Quartals-Mittel 2026/1 · retrieved on 17/08/2026 [2] https://www.gelsenwasser.de/fileadmin/twa/downloads/www/trinkwasseranalyse_halingen_01.pdf · 2025 · retrieved on 25/07/2026

Wasserwerk Westhofen 1

Wasserwerke Westfalen GmbH

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

Water hardness

8.2 °dH

Hardness range weich

Key values Wasserwerk Westhofen 1
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	13,5 mg/l	50 mg/l	27 %	Mean · Wasserwerk Westhofen 1
Lead	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Westhofen 1
Escherichia coli (E. coli)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Westhofen 1
Sulphate	38 mg/l	250 mg/l	15 %	Mean · Wasserwerk Westhofen 1
Sodium	29 mg/l	200 mg/l	14 %	Mean · Wasserwerk Westhofen 1

* 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 – Wasserwerk Westhofen 1
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Westhofen 1
Intestinal enterococci	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Westhofen 1

Chemical parameters (18)

Chemical parameters – Wasserwerk Westhofen 1
Parameter	Value	Parametric value	Share of the parametric value	Reference
Antimony	< 1,0 µg/l below limit of quantification	5 µg/l	< 20 % *	Mean · Wasserwerk Westhofen 1
Arsenic	< 0,5 µg/l below limit of quantification	10 µg/l	< 5 % *	Mean · Wasserwerk Westhofen 1
Boron	< 0,05 mg/l below limit of quantification	1 mg/l	< 5 % *	Mean · Wasserwerk Westhofen 1
Bromate	< 0,0030 mg/l below limit of quantification	10 µg/l	< 30 % *	Mean · Wasserwerk Westhofen 1
Cadmium	< 0,3 µg/l below limit of quantification	3 µg/l	< 10 % *	Mean · Wasserwerk Westhofen 1
Chlorate	< 0,00 mg/l below limit of quantification	70 µg/l	< 0 % *	Mean · Wasserwerk Westhofen 1
Chlorite	< 0,01 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Westhofen 1
Chromium	< 0,4 µg/l below limit of quantification	25 µg/l	< 2 % *	Mean · Wasserwerk Westhofen 1
Copper	< 5 µg/l below limit of quantification	2 mg/l	< 0.3 % *	Mean · Wasserwerk Westhofen 1
Cyanide	< 0,005 mg/l below limit of quantification	50 µg/l	< 10 % *	Mean · Wasserwerk Westhofen 1
Fluoride	0,08 mg/l	1.5 mg/l	5 %	Mean · Wasserwerk Westhofen 1
Lead	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Westhofen 1
Mercury	< 0,10 µg/l below limit of quantification	1 µg/l	< 10 % *	Mean · Wasserwerk Westhofen 1
Nickel	< 2 µg/l below limit of quantification	20 µg/l	< 10 % *	Mean · Wasserwerk Westhofen 1
Nitrate	13,5 mg/l	50 mg/l	27 %	Mean · Wasserwerk Westhofen 1
Nitrite	0,01 mg/l	0.5 mg/l	2 %	Mean · Wasserwerk Westhofen 1
Selenium	< 1,0 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Westhofen 1
Uranium	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Westhofen 1

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

Indicator parameters (19)

Indicator parameters – Wasserwerk Westhofen 1
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	< 10 µg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Westhofen 1
Ammonium	< 0,05 mg/l below limit of quantification	0.5 mg/l	< 10 % *	Mean · Wasserwerk Westhofen 1
Chloride	48 mg/l	250 mg/l	19 %	Mean · Wasserwerk Westhofen 1
Clostridium perfringens (including spores)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Westhofen 1
Coliform bacteria	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Westhofen 1
Colony count 22 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Wasserwerk Westhofen 1
Colony count 36 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Wasserwerk Westhofen 1
Colour	< 0,10 1/m below limit of quantification	0.5 m⁻¹	—	Mean · Wasserwerk Westhofen 1
Conductivity (25 °C)	456 µS/cm	2,790 µS/cm	—	Mean · Wasserwerk Westhofen 1
Iron	< 0,010 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Westhofen 1
Manganese	< 0,002 mg/l below limit of quantification	50 µg/l	< 4 % *	Mean · Wasserwerk Westhofen 1
Odour	unauffällig	für den Verbraucher annehmbar	—	Mean · Wasserwerk Westhofen 1
pH	7,9	6,5–9,5	—	Mean · Wasserwerk Westhofen 1
Sodium	29 mg/l	200 mg/l	14 %	Mean · Wasserwerk Westhofen 1
Sulphate	38 mg/l	250 mg/l	15 %	Mean · Wasserwerk Westhofen 1
Taste	unauffällig	für den Verbraucher annehmbar	—	Mean · Wasserwerk Westhofen 1
Temperature	5,9 °C	—	—	Mean · Wasserwerk Westhofen 1
Total organic carbon (TOC)	1 mg/l	ohne anormale Veränderung	—	Mean · Wasserwerk Westhofen 1
Turbidity	< 0,05 FNU below limit of quantification	1 NTU	—	Mean · Wasserwerk Westhofen 1

* 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 (20)

Further parameters – Wasserwerk Westhofen 1
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	2,07 mmol/l	—	—	Mean · Wasserwerk Westhofen 1
Barium	24 µg/l	—	—	Mean · Wasserwerk Westhofen 1
Base capacity to pH 8.2	0,04 mmol/l	—	—	Mean · Wasserwerk Westhofen 1
Bromide	< 0,05 mg/l below limit of quantification	—	—	Mean · Wasserwerk Westhofen 1
Calcium	48 mg/l	—	—	Mean · Wasserwerk Westhofen 1
Carbonate hardness	5,8 °dH	—	—	Mean · Wasserwerk Westhofen 1
Dissolved organic carbon (DOC)	1,1 mg/l	—	—	Mean · Wasserwerk Westhofen 1
Gadolinium	< 0,1 µg/l below limit of quantification	—	—	Mean · Wasserwerk Westhofen 1
Hardness range (WRMG)	weich	—	—	Mean · Wasserwerk Westhofen 1
Lanthanum	< 0,1 µg/l below limit of quantification	—	—	Mean · Wasserwerk Westhofen 1
Lithium	5 µg/l	—	—	Mean · Wasserwerk Westhofen 1
Magnesium	6,6 mg/l	—	—	Mean · Wasserwerk Westhofen 1
Oxygen	13,2 mg/l	—	—	Mean · Wasserwerk Westhofen 1
Phosphate	0,15 mg/l	—	—	Mean · Wasserwerk Westhofen 1
Potassium	3 mg/l	—	—	Mean · Wasserwerk Westhofen 1
Silicate / silicic acid	2200 µg/l	—	—	Mean · Wasserwerk Westhofen 1
Strontium	0,16 mg/l	—	—	Mean · Wasserwerk Westhofen 1
Total hardness	8,2 °dH	—	—	Mean · Wasserwerk Westhofen 1
Vanadium	< 0,5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Westhofen 1
Zinc	< 5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Westhofen 1

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/twa-gelsenwasser?apikey=edr56zgt54 · Quartals-Mittel 2026/1 · Quartals-Mittel 2026/1 · retrieved on 17/08/2026

Wasserwerk Witten

Wasserwerke Westfalen GmbH

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

Water hardness

7 °dH

Hardness range weich

Key values Wasserwerk Witten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	12,7 mg/l	50 mg/l	25 %	Mean · Wasserwerk Witten
Lead	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Witten
Escherichia coli (E. coli)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Witten
Sulphate	32 mg/l	250 mg/l	13 %	Mean · Wasserwerk Witten
Sodium	29 mg/l	200 mg/l	14 %	Mean · Wasserwerk Witten

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

Chemical parameters (18)

Chemical parameters – Wasserwerk Witten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Antimony	< 1,0 µg/l below limit of quantification	5 µg/l	< 20 % *	Mean · Wasserwerk Witten
Arsenic	< 0,5 µg/l below limit of quantification	10 µg/l	< 5 % *	Mean · Wasserwerk Witten
Boron	< 0,05 mg/l below limit of quantification	1 mg/l	< 5 % *	Mean · Wasserwerk Witten
Bromate	< 0,0030 mg/l below limit of quantification	10 µg/l	< 30 % *	Mean · Wasserwerk Witten
Cadmium	< 0,3 µg/l below limit of quantification	3 µg/l	< 10 % *	Mean · Wasserwerk Witten
Chlorate	< 0,00 mg/l below limit of quantification	70 µg/l	< 0 % *	Mean · Wasserwerk Witten
Chlorite	< 0,01 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Witten
Chromium	< 0,4 µg/l below limit of quantification	25 µg/l	< 2 % *	Mean · Wasserwerk Witten
Copper	< 5 µg/l below limit of quantification	2 mg/l	< 0.3 % *	Mean · Wasserwerk Witten
Cyanide	< 0,005 mg/l below limit of quantification	50 µg/l	< 10 % *	Mean · Wasserwerk Witten
Fluoride	0,08 mg/l	1.5 mg/l	5 %	Mean · Wasserwerk Witten
Lead	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Witten
Mercury	< 0,10 µg/l below limit of quantification	1 µg/l	< 10 % *	Mean · Wasserwerk Witten
Nickel	< 2 µg/l below limit of quantification	20 µg/l	< 10 % *	Mean · Wasserwerk Witten
Nitrate	12,7 mg/l	50 mg/l	25 %	Mean · Wasserwerk Witten
Nitrite	0,01 mg/l	0.5 mg/l	2 %	Mean · Wasserwerk Witten
Selenium	< 1,0 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Witten
Uranium	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Witten

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

Indicator parameters (19)

Indicator parameters – Wasserwerk Witten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	< 10 µg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Witten
Ammonium	< 0,05 mg/l below limit of quantification	0.5 mg/l	< 10 % *	Mean · Wasserwerk Witten
Chloride	50 mg/l	250 mg/l	20 %	Mean · Wasserwerk Witten
Clostridium perfringens (including spores)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Witten
Coliform bacteria	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Witten
Colony count 22 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Wasserwerk Witten
Colony count 36 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Wasserwerk Witten
Colour	< 0,10 1/m below limit of quantification	0.5 m⁻¹	—	Mean · Wasserwerk Witten
Conductivity (25 °C)	382 µS/cm	2,790 µS/cm	—	Mean · Wasserwerk Witten
Iron	< 0,010 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Witten
Manganese	< 0,002 mg/l below limit of quantification	50 µg/l	< 4 % *	Mean · Wasserwerk Witten
Odour	unauffällig	für den Verbraucher annehmbar	—	Mean · Wasserwerk Witten
pH	7,9	6,5–9,5	—	Mean · Wasserwerk Witten
Sodium	29 mg/l	200 mg/l	14 %	Mean · Wasserwerk Witten
Sulphate	32 mg/l	250 mg/l	13 %	Mean · Wasserwerk Witten
Taste	unauffällig	für den Verbraucher annehmbar	—	Mean · Wasserwerk Witten
Temperature	6,6 °C	—	—	Mean · Wasserwerk Witten
Total organic carbon (TOC)	0,9 mg/l	ohne anormale Veränderung	—	Mean · Wasserwerk Witten
Turbidity	< 0,05 FNU below limit of quantification	1 NTU	—	Mean · Wasserwerk Witten

* 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 (20)

Further parameters – Wasserwerk Witten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	1,66 mmol/l	—	—	Mean · Wasserwerk Witten
Barium	23 µg/l	—	—	Mean · Wasserwerk Witten
Base capacity to pH 8.2	0,04 mmol/l	—	—	Mean · Wasserwerk Witten
Bromide	< 0,05 mg/l below limit of quantification	—	—	Mean · Wasserwerk Witten
Calcium	39 mg/l	—	—	Mean · Wasserwerk Witten
Carbonate hardness	4,7 °dH	—	—	Mean · Wasserwerk Witten
Dissolved organic carbon (DOC)	0,8 mg/l	—	—	Mean · Wasserwerk Witten
Gadolinium	< 0,1 µg/l below limit of quantification	—	—	Mean · Wasserwerk Witten
Hardness range (WRMG)	weich	—	—	Mean · Wasserwerk Witten
Lanthanum	< 0,1 µg/l below limit of quantification	—	—	Mean · Wasserwerk Witten
Lithium	< 5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Witten
Magnesium	6,8 mg/l	—	—	Mean · Wasserwerk Witten
Oxygen	13,7 mg/l	—	—	Mean · Wasserwerk Witten
Phosphate	0,15 mg/l	—	—	Mean · Wasserwerk Witten
Potassium	3 mg/l	—	—	Mean · Wasserwerk Witten
Silicate / silicic acid	2100 µg/l	—	—	Mean · Wasserwerk Witten
Strontium	0,12 mg/l	—	—	Mean · Wasserwerk Witten
Total hardness	7 °dH	—	—	Mean · Wasserwerk Witten
Vanadium	< 0,5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Witten
Zinc	< 5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Witten

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/twa-gelsenwasser?apikey=edr56zgt54 · Quartals-Mittel 2026/1 · Quartals-Mittel 2026/1 · retrieved on 17/08/2026

Wasserwerk Hengsen

Wasserwerke Westfalen GmbH

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

Water hardness

8.5 °dH

Hardness range mittel

Key values Wasserwerk Hengsen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	13,9 mg/l	50 mg/l	28 %	Mean · Wasserwerk Hengsen
Lead	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Hengsen
Escherichia coli (E. coli)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Hengsen
Sulphate	37 mg/l	250 mg/l	15 %	Mean · Wasserwerk Hengsen
Sodium	28 mg/l	200 mg/l	14 %	Mean · Wasserwerk Hengsen

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

Chemical parameters (18)

Chemical parameters – Wasserwerk Hengsen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Antimony	< 1,0 µg/l below limit of quantification	5 µg/l	< 20 % *	Mean · Wasserwerk Hengsen
Arsenic	< 0,5 µg/l below limit of quantification	10 µg/l	< 5 % *	Mean · Wasserwerk Hengsen
Boron	< 0,05 mg/l below limit of quantification	1 mg/l	< 5 % *	Mean · Wasserwerk Hengsen
Bromate	< 0,0030 mg/l below limit of quantification	10 µg/l	< 30 % *	Mean · Wasserwerk Hengsen
Cadmium	< 0,3 µg/l below limit of quantification	3 µg/l	< 10 % *	Mean · Wasserwerk Hengsen
Chlorate	< 0,00 mg/l below limit of quantification	70 µg/l	< 0 % *	Mean · Wasserwerk Hengsen
Chlorite	< 0,01 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Hengsen
Chromium	< 0,4 µg/l below limit of quantification	25 µg/l	< 2 % *	Mean · Wasserwerk Hengsen
Copper	< 5 µg/l below limit of quantification	2 mg/l	< 0.3 % *	Mean · Wasserwerk Hengsen
Cyanide	< 0,005 mg/l below limit of quantification	50 µg/l	< 10 % *	Mean · Wasserwerk Hengsen
Fluoride	0,08 mg/l	1.5 mg/l	5 %	Mean · Wasserwerk Hengsen
Lead	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Hengsen
Mercury	< 0,10 µg/l below limit of quantification	1 µg/l	< 10 % *	Mean · Wasserwerk Hengsen
Nickel	< 2 µg/l below limit of quantification	20 µg/l	< 10 % *	Mean · Wasserwerk Hengsen
Nitrate	13,9 mg/l	50 mg/l	28 %	Mean · Wasserwerk Hengsen
Nitrite	0,01 mg/l	0.5 mg/l	2 %	Mean · Wasserwerk Hengsen
Selenium	< 1,0 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Hengsen
Uranium	< 1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Wasserwerk Hengsen

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

Indicator parameters (19)

Indicator parameters – Wasserwerk Hengsen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	< 10 µg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Hengsen
Ammonium	< 0,05 mg/l below limit of quantification	0.5 mg/l	< 10 % *	Mean · Wasserwerk Hengsen
Chloride	47 mg/l	250 mg/l	19 %	Mean · Wasserwerk Hengsen
Clostridium perfringens (including spores)	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Hengsen
Coliform bacteria	0 KBE/100 ml	0/100 ml	—	Mean · Wasserwerk Hengsen
Colony count 22 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Wasserwerk Hengsen
Colony count 36 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Wasserwerk Hengsen
Colour	< 0,10 1/m below limit of quantification	0.5 m⁻¹	—	Mean · Wasserwerk Hengsen
Conductivity (25 °C)	455 µS/cm	2,790 µS/cm	—	Mean · Wasserwerk Hengsen
Iron	< 0,010 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Wasserwerk Hengsen
Manganese	< 0,002 mg/l below limit of quantification	50 µg/l	< 4 % *	Mean · Wasserwerk Hengsen
Odour	unauffällig	für den Verbraucher annehmbar	—	Mean · Wasserwerk Hengsen
pH	7,96	6,5–9,5	—	Mean · Wasserwerk Hengsen
Sodium	28 mg/l	200 mg/l	14 %	Mean · Wasserwerk Hengsen
Sulphate	37 mg/l	250 mg/l	15 %	Mean · Wasserwerk Hengsen
Taste	unauffällig	für den Verbraucher annehmbar	—	Mean · Wasserwerk Hengsen
Temperature	6,6 °C	—	—	Mean · Wasserwerk Hengsen
Total organic carbon (TOC)	0,9 mg/l	ohne anormale Veränderung	—	Mean · Wasserwerk Hengsen
Turbidity	< 0,05 FNU below limit of quantification	1 NTU	—	Mean · Wasserwerk Hengsen

* 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 (20)

Further parameters – Wasserwerk Hengsen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	2,13 mmol/l	—	—	Mean · Wasserwerk Hengsen
Barium	24 µg/l	—	—	Mean · Wasserwerk Hengsen
Base capacity to pH 8.2	0,05 mmol/l	—	—	Mean · Wasserwerk Hengsen
Bromide	< 0,05 mg/l below limit of quantification	—	—	Mean · Wasserwerk Hengsen
Calcium	50 mg/l	—	—	Mean · Wasserwerk Hengsen
Carbonate hardness	6 °dH	—	—	Mean · Wasserwerk Hengsen
Dissolved organic carbon (DOC)	0,9 mg/l	—	—	Mean · Wasserwerk Hengsen
Gadolinium	< 0,1 µg/l below limit of quantification	—	—	Mean · Wasserwerk Hengsen
Hardness range (WRMG)	mittel	—	—	Mean · Wasserwerk Hengsen
Lanthanum	< 0,1 µg/l below limit of quantification	—	—	Mean · Wasserwerk Hengsen
Lithium	5 µg/l	—	—	Mean · Wasserwerk Hengsen
Magnesium	6,5 mg/l	—	—	Mean · Wasserwerk Hengsen
Oxygen	12,8 mg/l	—	—	Mean · Wasserwerk Hengsen
Phosphate	0,12 mg/l	—	—	Mean · Wasserwerk Hengsen
Potassium	3 mg/l	—	—	Mean · Wasserwerk Hengsen
Silicate / silicic acid	2300 µg/l	—	—	Mean · Wasserwerk Hengsen
Strontium	0,17 mg/l	—	—	Mean · Wasserwerk Hengsen
Total hardness	8,5 °dH	—	—	Mean · Wasserwerk Hengsen
Vanadium	< 0,5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Hengsen
Zinc	< 5 µg/l below limit of quantification	—	—	Mean · Wasserwerk Hengsen

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/twa-gelsenwasser?apikey=edr56zgt54 · Quartals-Mittel 2026/1 · Quartals-Mittel 2026/1 · retrieved on 17/08/2026

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

Gelsenwasser

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

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.

Source: https://www.gelsenwasser.de/fileadmin/twa/downloads/gelsenwasser/trinkwasseranalyse_essen.pdf · 2025 · retrieved on 11/07/2026

Wasserwerk Hengsen (Pumpwerk Hengsen, 00-0260)

Wasserwerke Westfalen GmbH

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

Water hardness

8.2 °dH

Hardness range weich

Key values Wasserwerk Hengsen (Pumpwerk Hengsen, 00-0260)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	12,1 mg/l	50 mg/l	24 %	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	35 mg/l	250 mg/l	14 %	Mean
Sodium	24 mg/l	200 mg/l	12 %	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 – Wasserwerk Hengsen (Pumpwerk Hengsen, 00-0260)
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 – Wasserwerk Hengsen (Pumpwerk Hengsen, 00-0260)
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 below limit of quantification	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
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	0,09 mg/l	1.5 mg/l	6 %	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	12,1 mg/l	50 mg/l	24 %	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 – Wasserwerk Hengsen (Pumpwerk Hengsen, 00-0260)
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	36 mg/l	250 mg/l	14 %	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)	421 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	7,91	6,5–9,5	—	Mean
Sodium	24 mg/l	200 mg/l	12 %	Mean
Sulphate	35 mg/l	250 mg/l	14 %	Mean
Temperature	13 °C	—	—	Mean
Total organic carbon (TOC)	0,7 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 – Wasserwerk Hengsen (Pumpwerk Hengsen, 00-0260)
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 – Wasserwerk Hengsen (Pumpwerk Hengsen, 00-0260)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	2,21 mmol/l	—	—	Mean
Base capacity to pH 8.2	0,05 mmol/l	—	—	Mean
Calcium	49 mg/l	—	—	Mean
Carbonate hardness	6,2 °dH	—	—	Mean
Hardness range (WRMG)	weich	—	—	Mean
Magnesium	6,2 mg/l	—	—	Mean
Oxygen	10,8 mg/l	—	—	Mean
Phosphate	0,14 mg/l	—	—	Mean
Potassium	3,2 mg/l	—	—	Mean
Silicate / silicic acid	5,9 mg/l	—	—	Mean
Total hardness	8,2 °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.

Source: https://www.gelsenwasser.de/fileadmin/twa/downloads/www/trinkwasseranalyse_hengsen.pdf · 2025 · retrieved on 25/07/2026

Wasserwerk Westhofen 1 / Pumpwerk Westhofen 1 (00-0280)

Wasserwerke Westfalen GmbH

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

Water hardness

8.1 °dH

Hardness range weich

Key values Wasserwerk Westhofen 1 / Pumpwerk Westhofen 1 (00-0280)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	11,2 mg/l	50 mg/l	22 %	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	36 mg/l	250 mg/l	14 %	Mean
Sodium	26 mg/l	200 mg/l	13 %	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 – Wasserwerk Westhofen 1 / Pumpwerk Westhofen 1 (00-0280)
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 – Wasserwerk Westhofen 1 / Pumpwerk Westhofen 1 (00-0280)
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
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	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	0,09 mg/l	1.5 mg/l	6 %	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	11,2 mg/l	50 mg/l	22 %	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 – Wasserwerk Westhofen 1 / Pumpwerk Westhofen 1 (00-0280)
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	39 mg/l	250 mg/l	16 %	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)	429 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	7,88	6,5–9,5	—	Mean
Sodium	26 mg/l	200 mg/l	13 %	Mean
Sulphate	36 mg/l	250 mg/l	14 %	Mean
Temperature	13,3 °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 – Wasserwerk Westhofen 1 / Pumpwerk Westhofen 1 (00-0280)
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 – Wasserwerk Westhofen 1 / Pumpwerk Westhofen 1 (00-0280)
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	47 mg/l	—	—	Mean
Carbonate hardness	6,2 °dH	—	—	Mean
Hardness range (WRMG)	weich	—	—	Mean
Magnesium	6,4 mg/l	—	—	Mean
Oxygen	11,1 mg/l	—	—	Mean
Phosphate	0,17 mg/l	—	—	Mean
Potassium	3,3 mg/l	—	—	Mean
Silicate / silicic acid	5,4 mg/l	—	—	Mean
Total hardness	8,1 °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.

Source: https://www.gelsenwasser.de/fileadmin/twa/downloads/www/trinkwasseranalyse_westhoven.pdf · 2025 · retrieved on 25/07/2026

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.

Source: https://www.gelsenwasser.de/fileadmin/twa/downloads/huenxe_voerde/trinkwasseranalyse_bucholtwelmen.pdf · 2025 · retrieved on 13/07/2026

How to read the share of the parametric value

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

Microbiology (2)

Chemical parameters (28)

PFAS (2)

Indicator parameters (20)

Further parameters (12)

Haltern

Microbiology (2)

Chemical parameters (26)

Indicator parameters (18)

Radiology (2)

Further parameters (11)

Wasserwerk Witten

Microbiology (2)

Chemical parameters (26)

Indicator parameters (18)

Radiology (2)

Further parameters (11)

Wasserwerk Echthausen

Microbiology (2)

Chemical parameters (26)

Indicator parameters (20)

Radiology (2)

Further parameters (20)

Wasserwerk Halingen

Microbiology (2)

Chemical parameters (26)

Indicator parameters (20)

Radiology (2)

Further parameters (20)

Wasserwerk Westhofen 1

Microbiology (2)

Chemical parameters (18)

Indicator parameters (19)

Further parameters (20)

Wasserwerk Witten

Microbiology (2)

Chemical parameters (18)

Indicator parameters (19)

Further parameters (20)

Wasserwerk Hengsen

Microbiology (2)

Chemical parameters (18)

Indicator parameters (19)

Further parameters (20)

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

Microbiology (2)

Chemical parameters (26)

Indicator parameters (18)

Radiology (2)

Further parameters (11)

Wasserwerk Hengsen (Pumpwerk Hengsen, 00-0260)

Microbiology (2)

Chemical parameters (26)

Indicator parameters (18)

Radiology (2)

Further parameters (11)

Wasserwerk Westhofen 1 / Pumpwerk Westhofen 1 (00-0280)

Microbiology (2)

Chemical parameters (26)

Indicator parameters (18)

Radiology (2)

Further parameters (11)

Wasserwerk Bucholtwelmen

Microbiology (2)

Chemical parameters (24)

Indicator parameters (18)

Radiology (2)

Further parameters (11)

Frequent questions about postcode 44628