Drinking water in Zarpen
One supply zone, water supplier: Stadtwerke Reinfeld (Holstein) - Ver- und Entsorgung - Wasserversorgung.
How to read the share of the parametric value
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 31/12/2024. 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.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2,46 mg/l | 50 mg/l | 5 % | Single value |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Sulphate | 2,4 mg/l | 250 mg/l | 1 % | Single value |
| Sodium | 36,9 mg/l | 200 mg/l | 18 % | 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.
Show all recorded parameters (21 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Single value |
Chemical parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Copper | 0,008 mg/l | 2 mg/l | 0.4 % | Single value |
| Fluoride | 0,17 mg/l | 1.5 mg/l | 11 % | Single value |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Nitrate | 2,46 mg/l | 50 mg/l | 5 % | Single value |
| Nitrite | 0,06 mg/l | 0.5 mg/l | 12 % | Single value |
| Uranium | < 0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | 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 (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | 0,23 mg/l | 0.5 mg/l | 46 % | Single value |
| Chloride | 12,4 mg/l | 250 mg/l | 5 % | Single value |
| Coliform bacteria | 0 KBE/100ml | 0/100 ml | — | Single value |
| Iron | < 0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value |
| Manganese | 0,026 mg/l | 50 µg/l | 52 % | Single value |
| Odour | o.B. | für den Verbraucher annehmbar | — | Single value |
| pH | 7,40 | 6,5–9,5 | — | Single value |
| Sodium | 36,9 mg/l | 200 mg/l | 18 % | Single value |
| Sulphate | 2,4 mg/l | 250 mg/l | 1 % | Single value |
| Total organic carbon (TOC) | 1,8 mg/l | ohne anormale Veränderung | — | 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 (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 70,3 mg/l | — | — | Single value |
| Magnesium | 16,0 mg/l | — | — | Single value |
| Phosphate | < 0,1 mg/l below limit of quantification | — | — | 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: 23619
Frequently asked questions about drinking water in Zarpen
- How much nitrate is in the drinking water in Zarpen?
- Stadtwerke Reinfeld (Holstein) - Ver- und Entsorgung - Wasserversorgung publishes a nitrate value of 2,46 mg/l for the supply zone Werksausgang. 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 25/07/2026.
- Who supplies the drinking water in Zarpen?
- Stadtwerke Reinfeld (Holstein) - Ver- und Entsorgung - Wasserversorgung. The values shown here come from the supply zone Werksausgang 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.