Drinking water in 1937 (Switzerland)
The drinking water in Postcode 1937 has a total hardness of 0.7 °dH. Nitrate reaches 1.3 mg/L, the statutory parametric value is 40 mg/l. Measured in supply zone 1897 - Mayens d'Arpette (ORS42) - Réservoir d'Arpettaz of Service des eaux d'Orsières, retrieved on 12/08/2026.
One supply zone, water supplier: Service des eaux d'Orsières.
The values come from the SVGW platform trinkwasser.ch. Water utilities report there voluntarily; the SVGW does not verify the data. For each parameter, the minimum, maximum, average and median of one year are published; hardness in French degrees (°fH). On 20 August 2026 the SVGW objected in writing to the use of this data for maunawai.info: we do not show values from this source, but only name the parameters measured there. Analyses we obtained directly from the water supplier are shown in full.
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.
1897 - Mayens d'Arpette (ORS42) - Réservoir d'Arpettaz
Service des eaux d'OrsièresAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 1.3 mg/L | 40 mg/l | 3 % | Single value |
| Sulphate | 1.8 mg/L | — | — | Single value |
| Sodium | 1.0 mg/L | 200 mg/l | 0.5 % | Single value |
Show all recorded parameters (11 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 1.3 mg/L | 40 mg/l | 3 % | Single value |
Indicator parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 0.30 mg/L | — | — | Single value |
| pH | 7.2 | — | — | Single value |
| Sodium | 1.0 mg/L | 200 mg/l | 0.5 % | Single value |
| Sulphate | 1.8 mg/L | — | — | Single value |
| Total organic carbon (TOC) | < 0.5 mg/L below limit of quantification | — | — | Single value |
| Turbidity | < 0.2 UT/F below limit of quantification | — | — | Single value |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 4.6 mg/L | — | — | Single value |
| Carbonate hardness | 1.4 °F | — | — | Single value |
| Magnesium | 0.6 mg/L | — | — | Single value |
| Total hardness | 1.3 °F | — | — | 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.
Frequent questions about postcode 1937
- How hard is the water in Postcode 1937?
- Service des eaux d'Orsières publishes a total hardness of 1.3 °F for the supply zone 1897 - Mayens d'Arpette (ORS42) - Réservoir d'Arpettaz — that corresponds to 0.7 °dH. Hardness indicates how much calcium and magnesium are dissolved in the water. It is not a quality assessment: there is no parametric value for hardness. Basis: 18 juin 2026, retrieved on 12/08/2026.
- How much nitrate is in the drinking water in Postcode 1937?
- Service des eaux d'Orsières publishes a nitrate value of 1.3 mg/L for the supply zone 1897 - Mayens d'Arpette (ORS42) - Réservoir d'Arpettaz. The statutory parametric value is 40 mg/l; the measured value represents 3 % of the parametric value. Basis: 18 juin 2026, retrieved on 12/08/2026.
- Who supplies the drinking water in Postcode 1937?
- Service des eaux d'Orsières. The values shown here come from the supply zone 1897 - Mayens d'Arpette (ORS42) - Réservoir d'Arpettaz 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.