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Drinking water in 48619

One supply zone, water supplier: Lokalwerke Westmünsterland.

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.

These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 10/05/2024. 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
8.6 °dH
Hardness range mittel
Key values Heek
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 1,87 mg/l 50 mg/l
4 %
Single value · Heek
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Heek
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Single value · Heek
Sulphate 10,85 mg/l 250 mg/l
4 %
Single value · Heek
Sodium 57,83 mg/l 200 mg/l
29 %
Single value · Heek

* 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 (31 — most recent value per parameter)

Microbiology (1)

Microbiology – Heek
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Single value · Heek

Chemical parameters (5)

Chemical parameters – Heek
Parameter Value Parametric value Share of the parametric value Reference
Copper <0,003 mg/l
below limit of quantification
2 mg/l
< 0.2 % *
Single value · Heek
Fluoride <0,2 mg/l
below limit of quantification
1.5 mg/l
< 13 % *
Single value · Heek
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value · Heek
Nitrate 1,87 mg/l 50 mg/l
4 %
Single value · Heek
Nitrite <0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Single value · Heek

* 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 (17)

Indicator parameters – Heek
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,05 mg/l
below limit of quantification
0.2 mg/l
< 25 % *
Single value · Heek
Ammonium <0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Single value · Heek
Calcite dissolution capacity -10,05 mg/l 5 mg/l CaCO3 Single value · Heek
Chloride 21,89 mg/l 250 mg/l
9 %
Single value · Heek
Coliform bacteria 0 KBE/100ml 0/100 ml Single value · Heek
Colony count 22 °C 0 KBE/ml ohne anormale Veränderung Single value · Heek
Colony count 36 °C 0 KBE/ml ohne anormale Veränderung Single value · Heek
Colour farblos
Unit not stated in the document
0.5 m⁻¹ Single value · Heek
Iron <0,05 mg/l
below limit of quantification
0.2 mg/l
< 25 % *
Single value · Heek
Manganese <0,01 mg/l
below limit of quantification
50 µg/l
< 20 % *
Single value · Heek
Odour ohne für den Verbraucher annehmbar Single value · Heek
pH 7,81 6,5–9,5 Single value · Heek
Sodium 57,83 mg/l 200 mg/l
29 %
Single value · Heek
Sulphate 10,85 mg/l 250 mg/l
4 %
Single value · Heek
Temperature 12,5 °C Single value · Heek
Total organic carbon (TOC) 2,1 mg/l ohne anormale Veränderung Single value · Heek
Turbidity <0,23 NTU
below limit of quantification
1 NTU Single value · Heek

* 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 – Heek
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 4,89 mmol/l Single value · Heek
Base capacity to pH 8.2 0,12 mmol/l Single value · Heek
Calcium 41,64 mg/l Single value · Heek
Hardness range (WRMG) mittel Single value · Heek
Hydrogen carbonate 1,22 mg/l Single value · Heek
Magnesium 12,1 mg/l Single value · Heek
Potassium 7,6 mg/l Single value · Heek
Total hardness 8,62 °dH Single value · Heek

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://lokalwerke.de/wp-content/uploads/2024/06/Trinkwasseranalyse_2024-Ahaus.pdf · Probeentnahme vom 10.05.2024 · retrieved on 11/07/2026

Frequent questions about postcode 48619

How hard is the water in Postcode 48619?
Lokalwerke Westmünsterland publishes a total hardness of 8.6 °dH for the supply zone Heek (hardness range mittel). The hardness range is a classification under the German Detergents and Cleaning Products Act (soft below 8,4 °dH, medium 8,4 to 14 °dH, hard above that) and not a quality verdict — it indicates how much calcium and magnesium is dissolved in the water. Basis: Publication by the water supplier, retrieved on 11/07/2026.
How much nitrate is in the drinking water in Postcode 48619?
Lokalwerke Westmünsterland publishes a nitrate value of 1,87 mg/l for the supply zone Heek. The statutory parametric value is 50 mg/l; the measured value represents 4 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
Who supplies the drinking water in Postcode 48619?
Lokalwerke Westmünsterland. The values shown here come from the supply zone Heek 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.