Drinking water in 1422 (Switzerland)
Nitrate reaches 2.98 mg/L, the statutory parametric value is 40 mg/l. Measured in supply zone Fontaine Lassueur (29 avril ) of Viteos / Commune de Grandson, retrieved on 12/08/2026.
For this postcode Viteos / Commune de Grandson 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 2 underneath.
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.
Fontaine Lassueur (29 avril )
Viteos / Commune de GrandsonAssigned 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 | 2.98 mg/L | 40 mg/l | 7 % | Single value · Fontaine Lassueur (29 avril 2025) |
| Sulphate | 38.2 mg/L | — | — | Single value · Fontaine Lassueur (29 avril 2025) |
| Sodium | 9.34 mg/L | 200 mg/l | 5 % | Single value · Fontaine Lassueur (29 avril 2025) |
Show all recorded parameters (11 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2.98 mg/L | 40 mg/l | 7 % | Single value · Fontaine Lassueur (29 avril 2025) |
Indicator parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 15.4 mg/L | — | — | Single value · Fontaine Lassueur (29 avril 2025) |
| Conductivity (25 °C) | 470 µS | — | — | Single value · Fontaine Lassueur (29 avril 2025) |
| pH | 7.6 | — | — | Single value · Fontaine Lassueur (29 avril 2025) |
| Sodium | 9.34 mg/L | 200 mg/l | 5 % | Single value · Fontaine Lassueur (29 avril 2025) |
| Sulphate | 38.2 mg/L | — | — | Single value · Fontaine Lassueur (29 avril 2025) |
Further parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 72.9 mg/L | — | — | Single value · Fontaine Lassueur (29 avril 2025) |
| Hydrogen carbonate | 230.7 °f | — | — | Single value · Fontaine Lassueur (29 avril 2025) |
| Magnesium | 11 mg/L | — | — | Single value · Fontaine Lassueur (29 avril 2025) |
| Potassium | 1.27 mg/L | — | — | Single value · Fontaine Lassueur (29 avril 2025) |
| Total hardness | 23.5 mg/L | — | — | Single value · Fontaine Lassueur (29 avril 2025) |
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.
Show 2 more supply zones in this postcode
Réseau basse-pression
Viteos / Commune de GrandsonAssigned 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 | 20.7 mg/L | 40 mg/l | 52 % | Single value · Réseau basse pression |
Show all recorded parameters (3 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 20.7 mg/L | 40 mg/l | 52 % | Single value · Réseau basse pression |
Metabolites (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorothalonil metabolite R471811 | <0.050 μg/l below limit of quantification | 0.1 µg/l | < 50 % * | Single value · Réseau basse pression |
* 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 (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Total hardness | 33.1 °f | — | — | Single value · Réseau basse pression |
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.
Réseau haute pression
Viteos / Commune de GrandsonAssigned 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 | 2.98 mg/L | 40 mg/l | 7 % | Single value · Réseau haute pression |
Show all recorded parameters (3 — most recent value per parameter)
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2.98 mg/L | 40 mg/l | 7 % | Single value · Réseau haute pression |
Metabolites (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorothalonil metabolite R471811 | 0.170 μg/l | 0.1 µg/l | 170 % above the parametric value | Single value · Réseau haute pression |
| Note from the water supplier in the document: Comme pour tout le plateau suisse, la teneur en Chlorothalonil R471811 dépasse l'exigence de 0.100 μg/l uniquement sur le réseau haute pression. | ||||
An exceedance of a parametric value does not automatically mean a health risk; the statutory parametric values include safety margins. Assessment and any measures are the responsibility of the competent health authority of the respective country.
Further parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Total hardness | 23.5 °f | — | — | Single value · Réseau haute pression |
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 1422
- How much nitrate is in the drinking water in Postcode 1422?
- Viteos / Commune de Grandson publishes a nitrate value of 2.98 mg/L for the supply zone Fontaine Lassueur (29 avril ). The statutory parametric value is 40 mg/l; the measured value represents 7 % of the parametric value. Basis: 2025, retrieved on 12/08/2026.
- Who supplies the drinking water in Postcode 1422?
- Viteos / Commune de Grandson. The values shown here come from the supply zone Fontaine Lassueur (29 avril ) 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.