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Drinking water in Kevelaer-Wetten

One supply zone, water supplier: Stadtwerke Kevelaer.

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 Kevelaer-Keylaer

Stadtwerke Kevelaer

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

Water hardness
6.9 °dH
Hardness range weich
Key values Wasserwerk Kevelaer-Keylaer
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 18,5 mg/l 50 mg/l
37 %
Single value
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Single value
Sulphate 86,7 mg/l 250 mg/l
35 %
Single value
Sodium 16,3 mg/l 200 mg/l
8 %
Single value
Show all recorded parameters (36 — most recent value per parameter)

Microbiology (2)

Microbiology – Wasserwerk Kevelaer-Keylaer
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Single value
Intestinal enterococci -
not determined
Unit not stated in the document
0/100 ml Single value

Chemical parameters (11)

Chemical parameters – Wasserwerk Kevelaer-Keylaer
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,1 µg/l
below limit of quantification
3 µg/l
< 3 % *
Single value
Benzene <0,05 µg/l
below limit of quantification
1 µg/l
< 5 % *
Single value
Boron 0,043 mg/l 1 mg/l
4 %
Single value
Bromate <0,002 mg/l
below limit of quantification
10 µg/l
< 20 % *
Single value
Chromium <0,0005 mg/l
below limit of quantification
25 µg/l
< 2 % *
Single value
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Single value
Fluoride 0,07 mg/l 1.5 mg/l
5 %
Single value
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Single value
Nitrate 18,5 mg/l 50 mg/l
37 %
Single value
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value
Uranium 0,00062 mg/l 10 µg/l
6 %
Single value

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

Indicator parameters (15)

Indicator parameters – Wasserwerk Kevelaer-Keylaer
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Single value
Ammonium <0,020 mg/l
below limit of quantification
0.5 mg/l
< 4 % *
Single value
Calcite dissolution capacity -0,3 mg/l 5 mg/l CaCO3 Single value
Chloride 26,9 mg/l 250 mg/l
11 %
Single value
Clostridium perfringens (including spores) -
not determined
Unit not stated in the document
0/100 ml Single value
Colour <0,1 m-1
below limit of quantification
0.5 m⁻¹ Single value
Conductivity (25 °C) 377 µS/cm 2,790 µS/cm Single value
Iron <0,005 mg/l
below limit of quantification
0.2 mg/l
< 3 % *
Single value
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Single value
pH 8,71 6,5–9,5 Single value
Sodium 16,3 mg/l 200 mg/l
8 %
Single value
Sulphate 86,7 mg/l 250 mg/l
35 %
Single value
Temperature 12,0 °C Single value
Total organic carbon (TOC) 1,8 mg/l ohne anormale Veränderung Single value
Turbidity <0,1 NTU
below limit of quantification
1 NTU Single value

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

Further parameters (8)

Further parameters – Wasserwerk Kevelaer-Keylaer
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 0,49 mmol/l Single value
Base capacity to pH 8.2 -0,03 mmol/l Single value
Calcium 36,3 mg/l Single value
Hardness range (WRMG) weich Single value
Magnesium 8,07 mg/l Single value
Phosphate 2 mg/l Single value
Potassium 5,6 mg/l Single value
Total hardness 6,94 °dH Single value

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

Postcodes in this zone: 47625

Frequently asked questions about drinking water in Kevelaer-Wetten

How hard is the water in Kevelaer-Wetten?
Stadtwerke Kevelaer publishes a total hardness of 6.9 °dH for the supply zone Wasserwerk Kevelaer-Keylaer (hardness range weich). The hardness range is a classification under the German Detergents and Cleaning Products Act (soft below 8,4 °dH, medium 8,4 to 14 °dH, hard above that) and not a quality verdict — it indicates how much calcium and magnesium is dissolved in the water. Basis: Publication by the water supplier, retrieved on 13/07/2026.
How much nitrate is in the drinking water in Kevelaer-Wetten?
Stadtwerke Kevelaer publishes a nitrate value of 18,5 mg/l for the supply zone Wasserwerk Kevelaer-Keylaer. The statutory parametric value is 50 mg/l; the measured value represents 37 % of the parametric value. Basis: Publication by the water supplier, retrieved on 13/07/2026.
Who supplies the drinking water in Kevelaer-Wetten?
Stadtwerke Kevelaer. The values shown here come from the supply zone Wasserwerk Kevelaer-Keylaer 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.