How hard is the water in Postcode 58313?

Wasserwerke Westfalen GmbH publishes a total hardness of 7.5 °dH for the supply zone Wasserwerk Echthausen (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: Quartals-Mittel 2026/1, retrieved on 17/08/2026.

How much nitrate is in the drinking water in Postcode 58313?

Wasserwerke Westfalen GmbH publishes a nitrate value of 11,7 mg/l for the supply zone Wasserwerk Echthausen. The statutory parametric value is 50 mg/l; the measured value represents 23 % of the parametric value. Basis: Quartals-Mittel 2026/1, retrieved on 17/08/2026.

Who supplies the drinking water in Postcode 58313?

Wasserwerke Westfalen GmbH. The values shown here come from the supply zone Wasserwerk Echthausen 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 in 58313

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.

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]

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]

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

Show 9 more supply zones in this postcode

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]

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]

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]

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]

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

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

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

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

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

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

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

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

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

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

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

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

Source: https://www.gelsenwasser.de/twa-gelsenwasser?apikey=edr56zgt54 · Quartals-Mittel 2026/1 · Quartals-Mittel 2026/1 · retrieved on 17/08/2026

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

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

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

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

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

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

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

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

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

Wasserwerk Witten, Wasserwerke Westfalen GmbH

Wasserwerke Westfalen GmbH

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

Water hardness

Hardness range 1,30

Key values Wasserwerk Witten, Wasserwerke Westfalen GmbH
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	11 mg/l	50 mg/l	22 %	Median
Sulphate	35 mg/l	250 mg/l	14 %	Median
Sodium	24 mg/l	200 mg/l	12 %	Median

Show all recorded parameters (17 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Wasserwerk Witten, Wasserwerke Westfalen GmbH
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	11 mg/l	50 mg/l	22 %	Median

Indicator parameters (8)

Indicator parameters – Wasserwerk Witten, Wasserwerke Westfalen GmbH
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcite dissolution capacity	0,1 mg/l	5 mg/l CaCO3	—	Median
Chloride	38 mg/l	250 mg/l	15 %	Median
Conductivity (25 °C)	404 µS/cm	2,790 µS/cm	—	Median
pH	7,92	6,5–9,5	—	Median
Sodium	24 mg/l	200 mg/l	12 %	Median
Sulphate	35 mg/l	250 mg/l	14 %	Median
Temperature	14,4 °C	—	—	Median
Total organic carbon (TOC)	0,8 mg/l	ohne anormale Veränderung	—	Median

Further parameters (8)

Further parameters – Wasserwerk Witten, Wasserwerke Westfalen GmbH
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	1,94 mmol/l	—	—	Median
Base capacity to pH 8.2	0,04 mmol/l	—	—	Median
Calcium	41 mg/l	—	—	Median
Hardness range (WRMG)	1,30 mmol/l	—	—	Median
Magnesium	6,8 mg/l	—	—	Median
Oxygen	11,2 mg/l	—	—	Median
Potassium	3,8 mg/l	—	—	Median
Silicate / silicic acid	2,3 mg/l	—	—	Median

Source: https://www.gelsenwasser.de/fileadmin/Gelsenwasser/80_footer/8.1-tw_parameter/witten_inst.pdf · Median 2025 · retrieved on 13/07/2026

Wasserwerk Villigst

Wasserwerke Westfalen GmbH

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

These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 31/12/2024. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.

Water hardness

7.7 °dH

Hardness range weich

Key values Wasserwerk Villigst
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	13,3 mg/l	50 mg/l	27 %	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	33 mg/l	250 mg/l	13 %	Mean
Sodium	29 mg/l	200 mg/l	14 %	Mean

Show all recorded parameters (55 — most recent value per parameter)

Microbiology (2)

Microbiology – Wasserwerk Villigst
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 Villigst
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	<0,005 µg/l below limit of quantification	2.5 µg/l	< 0.2 % *	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
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	0,08 mg/l	1.5 mg/l	5 %	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	13,3 mg/l	50 mg/l	27 %	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)	0,1 µg/l	10 µg/l	1 %	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

Indicator parameters (18)

Indicator parameters – Wasserwerk Villigst
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	25 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	<0,10 1/m below limit of quantification	0.5 m⁻¹	—	Mean
Conductivity (25 °C)	411 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	8,03	6,5–9,5	—	Mean
Sodium	29 mg/l	200 mg/l	14 %	Mean
Sulphate	33 mg/l	250 mg/l	13 %	Mean
Temperature	11,5 °C	—	—	Mean
Total organic carbon (TOC)	0,9 mg/l	ohne anormale Veränderung	—	Mean
Turbidity	<0,05 FNU below limit of quantification	1 NTU	—	Mean

Further parameters (11)

Further parameters – Wasserwerk Villigst
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	2,60 mmol/l	—	—	Mean
Base capacity to pH 8.2	0,06 mmol/l	—	—	Mean
Calcium	45 mg/l	—	—	Mean
Carbonate hardness	7,3 °dH	—	—	Mean
Hardness range (WRMG)	weich	—	—	Mean
Magnesium	6,0 mg/l	—	—	Mean
Oxygen	4,0 mg/l	—	—	Mean
Phosphate	0,21 mg/l	—	—	Mean
Potassium	3,1 mg/l	—	—	Mean
Silicate / silicic acid	7,2 mg/l	—	—	Mean
Total hardness	7,7 °dH	—	—	Mean

Source: https://www.gelsenwasser.de/fileadmin/twa/downloads/www/trinkwasseranalyse_villigst.pdf · Jahresmittelwert 2024 · retrieved on 25/07/2026

Wasserwerk Witten

DEW21 – Dortmunder Energie- und Wasserversorgung 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
Sum of PFAS	0,0304 µg/l	0.1 µg/l	30 %	Mean · 2026/1 · Source [6]
Nitrate	12,7 mg/l	50 mg/l	25 %	Mean · Quartalsmittel 2026/1 · Source [3]
Lead	<1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Escherichia coli (E. coli)	0 KBE/100 ml	0/100 ml	—	Mean · Quartals-Mittel 2026/1 · Source [5]
Sulphate	32 mg/l	250 mg/l	13 %	Mean · Quartalsmittel 2026/1 · Source [3]
Sodium	29 mg/l	200 mg/l	14 %	Mean · Quartalsmittel 2026/1 · Source [3]

Show all recorded parameters (186 — 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 · Quartals-Mittel 2026/1 · Source [5]
Intestinal enterococci	0 KBE/100 ml	0/100 ml	—	Mean · Quartals-Mittel 2026/1 · Source [5]

Chemical parameters (94)

Chemical parameters – Wasserwerk Witten
Parameter	Value	Parametric value	Share of the parametric value	Reference
1,1,1-Trichloroethane	<0,1 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
1,2-dichloroethane	<0,1 µg/l below limit of quantification	3 µg/l	< 3 % *	Mean · 2026/1 · Source [1]
2,4-D	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
2,6-Dichlorobenzamide (BAM)	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Acrylamide	<0,01 µg/l below limit of quantification	0.1 µg/l	< 10 % *	Mean · 2025 · Source [1]
Aldrin	<0,015 µg/l below limit of quantification	30 ng/l	< 50 % *	Mean · 2026/1 · Source [2]
AMPA	<0,020 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Antimony	<1,0 µg/l below limit of quantification	5 µg/l	< 20 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Arsenic	<0,5 µg/l below limit of quantification	10 µg/l	< 5 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Atrazine	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Bentazone	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Benzene	<0,1 µg/l below limit of quantification	1 µg/l	< 10 % *	Mean · 2026/1 · Source [1]
Benzo(a)pyrene	<0,0025 µg/l below limit of quantification	10 ng/l	< 25 % *	Mean · 2026/1 · Source [1]
Benzo(b)fluoranthene	<0,0100 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Benzo(ghi)perylene	<0,0050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Benzo(k)fluoranthene	<0,0050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Bisphenol A	<0,015 µg/l below limit of quantification	2.5 µg/l	< 0.6 % *	Mean · 2026/1 · Source [1]
Boron	<0,05 mg/l below limit of quantification	1 mg/l	< 5 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Bromacil	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Bromate	<0,0030 mg/l below limit of quantification	10 µg/l	< 30 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Bromodichloromethane	<0,1 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Bromoxynil	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Cadmium	<0,3 µg/l below limit of quantification	3 µg/l	< 10 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Carbendazim	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Carbetamide	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Chlorate	<0,00 mg/l below limit of quantification	70 µg/l	< 0 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Chloridazon	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Chlorite	<0,01 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Chlorotoluron	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Chromium	<0,4 µg/l below limit of quantification	25 µg/l	< 2 % *	Mean · Quartalsmittel 2026/1 · Source [3]
cis-1,2-Dichloroethene	<0,1 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Clopyralid	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Copper	<5 µg/l below limit of quantification	2 mg/l	< 0.3 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Cyanide	<0,005 mg/l below limit of quantification	50 µg/l	< 10 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Desethylatrazine	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Desisopropylatrazine	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Dibromochloromethane	<0,1 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Dicamba	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Dichloromethane	<0,1 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Dichlorprop	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Dieldrin	<0,015 µg/l below limit of quantification	30 ng/l	< 50 % *	Mean · 2026/1 · Source [2]
Dimefuron	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Dimethachlor	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Dimethenamid	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Diuron	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Epichlorohydrin	<0,1 µg/l below limit of quantification	0.1 µg/l	< 100 % *	Mean · 2025 · Source [1]
ETBE	<0,05 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Ethidimuron	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Ethofumesate	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Flufenacet	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Fluoranthene	<0,0100 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Fluoride	0,08 mg/l	1.5 mg/l	5 %	Mean · Quartalsmittel 2026/1 · Source [3]
Glyphosate	<0,020 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Heptachlor	<0,015 µg/l below limit of quantification	30 ng/l	< 50 % *	Mean · 2026/1 · Source [2]
Hexazinone	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Imidacloprid	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Isoproturon	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Lead	<1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Quartalsmittel 2026/1 · Source [3]
MCPA	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Mecoprop	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Mercury	<0,10 µg/l below limit of quantification	1 µg/l	< 10 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Metalaxyl	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Metamitron	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Metazachlor	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Methabenzthiazuron	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Metobromuron	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [7]
Metolachlor	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Metribuzin	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [7]
MTBE	<0,05 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Nickel	<2 µg/l below limit of quantification	20 µg/l	< 10 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Nicosulfuron	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [7]
Nitrate	12,7 mg/l	50 mg/l	25 %	Mean · Quartalsmittel 2026/1 · Source [3]
Nitrite	0,01 mg/l	0.5 mg/l	2 %	Mean · Quartalsmittel 2026/1 · Source [3]
Pendimethalin	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [7]
Pesticides — Total	<0,025 µg/l below limit of quantification	0.5 µg/l	< 5 % *	Mean · 2026/1 · Source [7]
Polycyclic aromatic hydrocarbons	<0,0050 µg/l below limit of quantification	0.1 µg/l	< 5 % *	Mean · 2026/1 · Source [1]
Prosulfocarb	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [7]
Quinmerac	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Selenium	<1,0 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Simazine	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [7]
Tebuconazole	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [7]
Terbuthylazine	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Terbutryn	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Tetrachloroethene	<0,1 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [6]
Tetrachloroethene and Trichloroethene (sum)	<0,1 µg/l below limit of quantification	10 µg/l	< 1 % *	Mean · 2026/1 · Source [1]
Tetrachloromethane	<0,05 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [6]
Thiacloprid	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Tri-allate	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [2]
Tribromomethane (bromoform)	<0,1 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Trichloroethene	<0,1 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [6]
Trichloromethane (chloroform)	<0,1 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Trihalomethanes — Total	<0,1 µg/l below limit of quantification	50 µg/l	< 0.2 % *	Mean · 2026/1 · Source [1]
Uranium	<1 µg/l below limit of quantification	10 µg/l	< 10 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Vinyl chloride	<0,05 µg/l below limit of quantification	0.5 µg/l	< 10 % *	Mean · 2026/1 · Source [6]

PFAS (23)

PFAS – Wasserwerk Witten
Parameter	Value	Parametric value	Share of the parametric value	Reference
HFPO-DA (GenX)	<0,0100 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [6]
Perfluorobutane sulfonic acid (PFBS)	0,0022 µg/l	—	—	Mean · 2026/1 · Source [1]
Perfluorobutanoic acid (PFBA)	0,0036 µg/l	—	—	Mean · 2026/1 · Source [1]
Perfluorodecane sulfonic acid (PFDS)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluorodecanoic acid (PFDA)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluorododecane sulfonic acid (PFDoDS)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluorododecanoic acid (PFDoDA)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluoroheptane sulfonic acid (PFHpS)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluoroheptanoic acid (PFHpA)	0,006 µg/l	—	—	Mean · 2026/1 · Source [1]
Perfluorohexane sulfonic acid (PFHxS)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluorohexanoic acid (PFHxA)	0,0051 µg/l	—	—	Mean · 2026/1 · Source [1]
Perfluorononane sulfonic acid (PFNS)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluorononanoic acid (PFNA)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluorooctanesulfonic acid (PFOS)	0,0024 µg/l	—	—	Mean · 2026/1 · Source [1]
Perfluorooctanoic acid (PFOA)	0,0047 µg/l	—	—	Mean · 2026/1 · Source [1]
Perfluoropentanesulfonic acid (PFPeS)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluoropentanoic acid (PFPeA)	0,0064 µg/l	—	—	Mean · 2026/1 · Source [1]
Perfluorotridecanesulfonic acid (PFTrDS)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluorotridecanoic acid (PFTrDA)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluoroundecanesulfonic acid (PFUnDS)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Perfluoroundecanoic acid (PFUnDA)	<0,0010 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [1]
Sum of 4 PFAS	0,0071 µg/l	—	—	Mean · 2026/1 · Source [6]
Sum of PFAS	0,0304 µg/l	0.1 µg/l	30 %	Mean · 2026/1 · Source [6]

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 · Quartalsmittel 2026/1 · Source [3]
Ammonium	<0,05 mg/l below limit of quantification	0.5 mg/l	< 10 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Chloride	50 mg/l	250 mg/l	20 %	Mean · Quartalsmittel 2026/1 · Source [3]
Clostridium perfringens (including spores)	0 KBE/100 ml	0/100 ml	—	Mean · Quartals-Mittel 2026/1 · Source [5]
Coliform bacteria	0 KBE/100 ml	0/100 ml	—	Mean · Quartals-Mittel 2026/1 · Source [5]
Colony count 22 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Quartals-Mittel 2026/1 · Source [5]
Colony count 36 °C	0 KBE/ml	ohne anormale Veränderung	—	Mean · Quartals-Mittel 2026/1 · Source [5]
Colour	<0,10 1/m below limit of quantification	0.5 m⁻¹	—	Mean · Quartalsmittel 2026/1 · Source [3]
Conductivity (25 °C)	382 µS/cm	2,790 µS/cm	—	Mean · Quartalsmittel 2026/1 · Source [3]
Iron	<0,010 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Manganese	<0,002 mg/l below limit of quantification	50 µg/l	< 4 % *	Mean · Quartalsmittel 2026/1 · Source [3]
Odour	unauffällig	für den Verbraucher annehmbar	—	Mean · Quartalsmittel 2026/1 · Source [3]
pH	7,9	6,5–9,5	—	Mean · Quartalsmittel 2026/1 · Source [3]
Sodium	29 mg/l	200 mg/l	14 %	Mean · Quartalsmittel 2026/1 · Source [3]
Sulphate	32 mg/l	250 mg/l	13 %	Mean · Quartalsmittel 2026/1 · Source [3]
Taste	unauffällig	für den Verbraucher annehmbar	—	Mean · Quartalsmittel 2026/1 · Source [3]
Temperature	6,6 °C	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Total organic carbon (TOC)	0,9 mg/l	ohne anormale Veränderung	—	Mean · Quartalsmittel 2026/1 · Source [3]
Turbidity	<0,05 FNU below limit of quantification	1 NTU	—	Mean · Quartalsmittel 2026/1 · Source [3]

Further parameters (48)

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 · Quartalsmittel 2026/1 · Source [3]
Amidotrizoic acid	0,12 µg/l	—	—	Mean · 2026/1 · Source [4]
Atenolol	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Barium	23 µg/l	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Base capacity to pH 8.2	0,04 mmol/l	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Bezafibrate	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Bromide	<0,05 mg/l below limit of quantification	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Calcium	39 mg/l	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Candesartan	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Carbamazepine	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Carbonate hardness	4,7 °dH	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Clarithromycin	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Clofibric acid	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Diclofenac	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Dissolved organic carbon (DOC)	0,8 mg/l	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
EDTA	<1,0 µg/l below limit of quantification	—	—	Mean · 2025 · Source [1]
Erythromycin	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Gabapentin	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Hardness range (WRMG)	weich	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Iomeprol	<0,05 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Iopamidol	0,06 µg/l	—	—	Mean · 2026/1 · Source [4]
Iopromide	<0,05 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Lamotrigine	<0,05 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Lithium	<5 µg/l below limit of quantification	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Magnesium	6,8 mg/l	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Metformin	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Metoprolol	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
NTA (nitrilotriacetic acid)	<1,0 µg/l below limit of quantification	—	—	Mean · 2025 · Source [1]
Olmesartan	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Oxipurinol	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [8]
Oxygen	13,7 mg/l	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Phenazone	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Phosphate	0,15 mg/l	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Potassium	3 mg/l	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Primidone	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Propranolol	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Silicate / silicic acid	2100 µg/l	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Sotalol	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Strontium	0,12 mg/l	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Sulfamethoxazole	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Total hardness	7 °dH	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Trimethoprim	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Triphenyl phosphate	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [6]
Valsartan	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Valsartanic acid	<0,050 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [8]
Vanadium	<0,5 µg/l below limit of quantification	—	—	Mean · Quartalsmittel 2026/1 · Source [3]
Venlafaxine	<0,025 µg/l below limit of quantification	—	—	Mean · 2026/1 · Source [4]
Zinc	<5 µg/l below limit of quantification	—	—	Mean · Quartalsmittel 2026/1 · Source [3]

Sources: [1] nrw-dew21-dortmunder-energie-und-wasserversorgung-a6bf433arf.html · Jahres-Mittel 2025 und Quartals-Mittel 2026/1 · retrieved on 11/07/2026 [2] nrw-dew21-dortmunder-energie-und-wasserversorgung-a6bf433arb.html · Jahres-Mittel 2025 / Quartals-Mittel 2026/1 · retrieved on 11/07/2026 [3] nrw-dew21-dortmunder-energie-und-wasserversorgung-a6bf433ara.html · Jahresmittel 2025 / Quartalsmittel 2026/1 · retrieved on 11/07/2026 [4] nrw-dew21-dortmunder-energie-und-wasserversorgung-a6bf433ard.html · Jahres-Mittel 2025 und Quartals-Mittel 2026/1 · retrieved on 11/07/2026 [5] nrw-dew21-dortmunder-energie-und-wasserversorgung-a6bf433arh.html · Jahres-Mittel 2025 / Quartals-Mittel 2026/1 · retrieved on 11/07/2026 [6] nrw-dew21-dortmunder-energie-und-wasserversorgung-a6bf433arg.html · Jahres-Mittel 2025 und Quartals-Mittel 2026/1 · retrieved on 11/07/2026 [7] nrw-dew21-dortmunder-energie-und-wasserversorgung-a6bf433arc.html · Jahres-Mittel 2025 / Quartals-Mittel 2026/1 · retrieved on 11/07/2026 [8] nrw-dew21-dortmunder-energie-und-wasserversorgung-a6bf433are.html · Jahresmittel 2025 und Quartalsmittel 2026/1 · retrieved on 11/07/2026

Frequent questions about postcode 58313

How hard is the water in Postcode 58313?: Wasserwerke Westfalen GmbH publishes a total hardness of 7.5 °dH for the supply zone Wasserwerk Echthausen (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: Quartals-Mittel 2026/1, retrieved on 17/08/2026.
How much nitrate is in the drinking water in Postcode 58313?: Wasserwerke Westfalen GmbH publishes a nitrate value of 11,7 mg/l for the supply zone Wasserwerk Echthausen. The statutory parametric value is 50 mg/l; the measured value represents 23 % of the parametric value. Basis: Quartals-Mittel 2026/1, retrieved on 17/08/2026.
Who supplies the drinking water in Postcode 58313?: Wasserwerke Westfalen GmbH. The values shown here come from the supply zone Wasserwerk Echthausen 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.