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Drinking water in 46359

For this postcode Stadtwerke Borken 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 1 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.

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

Key values Borken
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 2,29 mg/l 50 mg/l
5 %
Mean · Borken
Lead <0,002 mg/l
below limit of quantification
10 µg/l
< 20 % *
Mean · Borken
Sulphate 46,9 mg/l 250 mg/l
19 %
Mean · Borken
Sodium 12,0 mg/l 200 mg/l
6 %
Mean · Borken

* 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 (19 — most recent value per parameter)

Chemical parameters (5)

Chemical parameters – Borken
Parameter Value Parametric value Share of the parametric value Reference
Fluoride 0,09 mg/l 1.5 mg/l
6 %
Mean · Borken
Lead <0,002 mg/l
below limit of quantification
10 µg/l
< 20 % *
Mean · Borken
Nitrate 2,29 mg/l 50 mg/l
5 %
Mean · Borken
Nitrite <0,020 mg/l
below limit of quantification
0.5 mg/l
< 4 % *
Mean · Borken
Uranium 0,00075 mg/l 10 µg/l
8 %
Mean · Borken

* 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 (9)

Indicator parameters – Borken
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 · Borken
Ammonium <0,020 mg/l
below limit of quantification
0.5 mg/l
< 4 % *
Mean · Borken
Chloride 28,0 mg/l 250 mg/l
11 %
Mean · Borken
Conductivity (25 °C) 553 µS/cm 2,790 µS/cm Mean · Borken
pH 7,6 - 6,5–9,5 Mean · Borken
Sodium 12,0 mg/l 200 mg/l
6 %
Mean · Borken
Sulphate 46,9 mg/l 250 mg/l
19 %
Mean · Borken
Temperature 11,3 °C Mean · Borken
Total organic carbon (TOC) 0,79 mg/l ohne anormale Veränderung Mean · Borken

* 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 (5)

Further parameters – Borken
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 3,76 mmol/l Mean · Borken
Base capacity to pH 8.2 0,19 mmop/l Mean · Borken
Calcium 95,4 mg/l Mean · Borken
Magnesium 4,1 mg/l Mean · Borken
Total hardness 2,55 (14,3) mmol/l (°dH) Mean · Borken

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-borken.de/netze/wasserqualitaet · Jahr 2025 · retrieved on 11/07/2026
Show 1 more supply zone in this postcode

Borken, Heiden und Raesfeld (ohne Erle)

Stadtwerke Borken

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

Key values Borken, Heiden und Raesfeld (ohne Erle)
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 2,29 mg/l 50 mg/l
5 %
Mean
Lead <0,002 mg/l
below limit of quantification
10 µg/l
< 20 % *
Mean
Sulphate 46,9 mg/l 250 mg/l
19 %
Mean
Sodium 12,0 mg/l 200 mg/l
6 %
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 (19 — most recent value per parameter)

Chemical parameters (5)

Chemical parameters – Borken, Heiden und Raesfeld (ohne Erle)
Parameter Value Parametric value Share of the parametric value Reference
Fluoride 0,09 mg/l 1.5 mg/l
6 %
Mean
Lead <0,002 mg/l
below limit of quantification
10 µg/l
< 20 % *
Mean
Nitrate 2,29 mg/l 50 mg/l
5 %
Mean
Nitrite <0,020 mg/l
below limit of quantification
0.5 mg/l
< 4 % *
Mean
Uranium 0,00075 mg/l 10 µg/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.

Indicator parameters (9)

Indicator parameters – Borken, Heiden und Raesfeld (ohne Erle)
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 <0,020 mg/l
below limit of quantification
0.5 mg/l
< 4 % *
Mean
Chloride 28,0 mg/l 250 mg/l
11 %
Mean
Conductivity (25 °C) 553 µS/cm 2,790 µS/cm Mean
pH 7,6 - 6,5–9,5 Mean
Sodium 12,0 mg/l 200 mg/l
6 %
Mean
Sulphate 46,9 mg/l 250 mg/l
19 %
Mean
Temperature 11,3 °C Mean
Total organic carbon (TOC) 0,79 mg/l ohne anormale Veränderung 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.

Further parameters (5)

Further parameters – Borken, Heiden und Raesfeld (ohne Erle)
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 3,76 mmol/l Mean
Base capacity to pH 8.2 0,19 mmop/l Mean
Calcium 95,4 mg/l Mean
Magnesium 4,1 mg/l Mean
Total hardness 2,55 (14,3) mmol/l (°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-borken.de/netze/wasserqualitaet · Mittelwerte für das Jahr 2025 · retrieved on 25/07/2026

Frequent questions about postcode 46359

How much nitrate is in the drinking water in Postcode 46359?
Stadtwerke Borken publishes a nitrate value of 2,29 mg/l for the supply zone Borken. The statutory parametric value is 50 mg/l; the measured value represents 5 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
Who supplies the drinking water in Postcode 46359?
Stadtwerke Borken. The values shown here come from the supply zone Borken 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.