How much nitrate is in the drinking water in Postcode 33428?

Wasserversorgung Harsewinkel publishes a nitrate value of 29 mg/l for the supply zone Harsewinkel. The statutory parametric value is 50 mg/l; the measured value represents 58 % of the parametric value. Basis: Q3/2025, retrieved on 11/07/2026.

Who supplies the drinking water in Postcode 33428?

Wasserversorgung Harsewinkel. The values shown here come from the supply zone Harsewinkel 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 33428

One supply zone, water supplier: Wasserversorgung Harsewinkel.

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.

Harsewinkel

Wasserversorgung Harsewinkel

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

Key values Harsewinkel
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	29 mg/l	50 mg/l	58 %	Single value
Escherichia coli (E. coli)	0 in 100 ml	0/100 ml	—	Single value
Sulphate	55 mg/l	250 mg/l	22 %	Single value
Sodium	22,3 mg/l	200 mg/l	11 %	Single value

Show all recorded parameters (25 — most recent value per parameter)

Microbiology (2)

Microbiology – Harsewinkel
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 in 100 ml	0/100 ml	—	Single value
Intestinal enterococci	0 in 100 ml	0/100 ml	—	Single value

Chemical parameters (3)

Chemical parameters – Harsewinkel
Parameter	Value	Parametric value	Share of the parametric value	Reference
Fluoride	<0,70 mg/l below limit of quantification	1.5 mg/l	< 47 % *	Single value
Nitrate	29 mg/l	50 mg/l	58 %	Single value
Nitrite	<0,02 mg/l below limit of quantification	0.5 mg/l	< 4 % *	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 – Harsewinkel
Parameter	Value	Parametric value	Share of the parametric value	Reference
Ammonium	<0,05 mg/l below limit of quantification	0.5 mg/l	< 10 % *	Single value
Calcite dissolution capacity	0 mg/l	5 mg/l CaCO3	—	Single value
Chloride	47 mg/l	250 mg/l	19 %	Single value
Coliform bacteria	0 in 100 ml	0/100 ml	—	Single value
Colony count 22 °C	0 in 1 ml	ohne anormale Veränderung	—	Single value
Colony count 36 °C	0 in 1 ml	ohne anormale Veränderung	—	Single value
Iron	<0,01 mg/l below limit of quantification	0.2 mg/l	< 5 % *	Single value
Manganese	<0,01 mg/l below limit of quantification	50 µg/l	< 20 % *	Single value
Odour	ohne	für den Verbraucher annehmbar	—	Single value
pH	7,55	6,5–9,5	—	Single value
Sodium	22,3 mg/l	200 mg/l	11 %	Single value
Sulphate	55 mg/l	250 mg/l	22 %	Single value
Temperature	10,5 °C	—	—	Single value
Total organic carbon (TOC)	1,9 mg/l	ohne anormale Veränderung	—	Single value
Turbidity	0,04 FNU	1 NTU	—	Single value

Further parameters (5)

Further parameters – Harsewinkel
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	80,0 mg/l	—	—	Single value
Carbonate hardness	8,3 °dh	—	—	Single value
Magnesium	4,5 mg/l	—	—	Single value
Oxygen	10 mg/l	—	—	Single value
Potassium	6,2 mg/l	—	—	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.harsewinkel.de/downloads/datei/MDFhMDM5ZDVmNzhmMTc1YXBCNFhudTZRekl1S2VBbnNaQTdmOFgwY2k0NFJERDRoUWNCNVU3TlJEQ0dxbzM3WHB4QlliUFMxdVR1UmJHbWg4SkQxckluVFk0Z3VFWXV0VkJkanAvVVRJTnFrNXpkS2tTWUVDOHdSOWYvbUY0VE5MVGlmRzBPNUJNb2h3VTJYL0k1MnVUMlN6RDkvVmEvd3ZHV3habVRUN25Dd3NjUDVkZitTaEVxWVU5Z01TZlUyRjN5VStQRlI4bFRVTW1URQ · Q3/2025 · Q3/2025 · retrieved on 11/07/2026

Frequent questions about postcode 33428

How much nitrate is in the drinking water in Postcode 33428?: Wasserversorgung Harsewinkel publishes a nitrate value of 29 mg/l for the supply zone Harsewinkel. The statutory parametric value is 50 mg/l; the measured value represents 58 % of the parametric value. Basis: Q3/2025, retrieved on 11/07/2026.
Who supplies the drinking water in Postcode 33428?: Wasserversorgung Harsewinkel. The values shown here come from the supply zone Harsewinkel 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.