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Drinking water in Rüthen

One supply zone, water supplier: Stadtwasserwerk Rüthen.

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.

Versorgung OT Menzel, Hochbehälter Menzel

Stadtwasserwerk Rüthen

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 18/03/2024. 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
14.3 °dH
Hardness range hard
Key values Versorgung OT Menzel, Hochbehälter Menzel
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 KBE/100 ml 0/100 ml Single value
Show all recorded parameters (16 — most recent value per parameter)

Microbiology (2)

Microbiology – Versorgung OT Menzel, Hochbehälter Menzel
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 KBE/100 ml 0/100 ml Single value
Intestinal enterococci 0 KBE/100 ml 0/100 ml Single value

Indicator parameters (10)

Indicator parameters – Versorgung OT Menzel, Hochbehälter Menzel
Parameter Value Parametric value Share of the parametric value Reference
Clostridium perfringens (including spores) 0 KBE/100 ml 0/100 ml Single value
Coliform bacteria 0 KBE/100 ml 0/100 ml Single value
Colony count 22 °C 0 KBE/ml ohne anormale Veränderung Single value
Colony count 36 °C 0 KBE/ml ohne anormale Veränderung Single value
Colour <0,1 1/m
below limit of quantification
0.5 m⁻¹ Single value
Odour ohne für den Verbraucher annehmbar Single value
pH 7,33 6,5–9,5 Single value
Taste ohne für den Verbraucher annehmbar Single value
Temperature 10,6 °C Single value
Turbidity 0,15 NTU 1 NTU Single value

Further parameters (4)

Further parameters – Versorgung OT Menzel, Hochbehälter Menzel
Parameter Value Parametric value Share of the parametric value Reference
Calcium 88,1 mg/l Single value
Magnesium 8,6 mg/l Single value
Sum of alkaline earth metals 2,56 mmol/l Single value
Total hardness 14,3 °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.

Source: https://www.ruethen.de/fileadmin/03-Rathaus/03.4-Stadtwerke/Wasserversorgung/Trinkwasseranalyse_Norddoerfer.pdf · Gelsenkirchen, 21.03.2024 · Untersuchungszeitraum: 15.03.2024 bis 18.03.2024 · retrieved on 25/07/2026

Postcodes in this zone: 59602

Frequently asked questions about drinking water in Rüthen

How hard is the water in Rüthen?
Stadtwasserwerk Rüthen publishes a total hardness of 14.3 °dH for the supply zone Versorgung OT Menzel, Hochbehälter Menzel (hardness range hard). 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: Gelsenkirchen, 21.03.2024, retrieved on 25/07/2026.
Who supplies the drinking water in Rüthen?
Stadtwasserwerk Rüthen. The values shown here come from the supply zone Versorgung OT Menzel, Hochbehälter Menzel 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.