Water Quality - Major Elements - Latest SurveyQualité Des Eaux - Éléments Majeurs - Dernière Campagne
Qualité Des Eaux - Éléments Majeurs - Dernière CampagneWater Quality - Major Elements - Latest Survey
This dataset, published by the Système d'information du territoire genevois (Geneva territorial information system), provides data on the chemical quality of watercourses in the canton of Geneva based on major nutrient elements from the most recent monitoring campaign. Water quality is assessed using Switzerland's modular graduated system, which determines whether the numerical requirements set out in Annex 2 of the federal Water Protection Ordinance (OEaux) are met. It draws on standardized methods for analyzing and evaluating watercourse quality, supporting environmental monitoring and regulatory compliance assessment at the local level.L'appréciation de la qualité des cours d'eau à l'aide des nutriments est guidée par le système modulaire gradué et permet de juger si les exigences chiffrées figurant dans l'annexe 2 de l'Ordonnance sur la protection des eaux (OEaux sont respectées Méthodes d'analyse et d'appréciation des cours d'e…
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Data schema (31 fields)
Click a field to see example values.
| Field | Type | Description |
|---|---|---|
| OBJECTID | oid | Internal unique record identifier.Internal unique record identifier. |
| CODEMESURE | string | Unique code identifying the measurement station and point.Unique code identifying the measurement station and point. |
| NOM_STATIONNom station | string | Name of the monitoring station.Name of the monitoring station. |
| COURS_EAUCours eau | string | Name and reference number of the watercourse.Name and reference number of the watercourse. |
| LIEN_FICHELien fiche | string | Link to the monitoring report PDF for this station and year.Link to the monitoring report PDF for this station and year. |
| NB_PRELEVEMENTNb prelevement | integer | Number of water samples taken during the campaign.Number of water samples taken during the campaign. |
| ANNEE | integer | Year of the monitoring campaign.Year of the monitoring campaign. |
| WORSTCASE | string | Overall worst-case water quality assessment for the station.Overall worst-case water quality assessment for the station. |
| DECLASSANT | string | Parameter causing the water quality downgrade, if any.Parameter causing the water quality downgrade, if any. |
| CONDUCTIVITE | double | Measured electrical conductivity of the water.Measured electrical conductivity of the water. |
| PH | double | Measured pH value of the water.Measured pH value of the water. |
| OXYGENE | double | Measured dissolved oxygen concentration in the water.Measured dissolved oxygen concentration in the water. |
| SATURATION | double | Dissolved oxygen saturation percentage in the water.Dissolved oxygen saturation percentage in the water. |
| ALCALINITE | double | Measured alkalinity of the water.Measured alkalinity of the water. |
| DBO | double | Measured biochemical oxygen demand (BOD) of the water.Measured biochemical oxygen demand (BOD) of the water. |
| COD | double | Measured chemical oxygen demand (COD) of the water.Measured chemical oxygen demand (COD) of the water. |
| N_NH4N nh4 | double | Measured ammonium nitrogen concentration.Measured ammonium nitrogen concentration. |
| N_NO2N no2 | double | Measured nitrite nitrogen concentration.Measured nitrite nitrogen concentration. |
| N_NO3N no3 | double | Measured nitrate nitrogen concentration.Measured nitrate nitrogen concentration. |
| P_PO4P po4 | double | Measured phosphate phosphorus concentration.Measured phosphate phosphorus concentration. |
| N_TOTALN total | double | Measured total nitrogen concentration.Measured total nitrogen concentration. |
| P_TOTALP total | double | Measured total phosphorus concentration.Measured total phosphorus concentration. |
| SILICE | double | Measured silica concentration in the water.Measured silica concentration in the water. |
| CHLORURE | double | Measured chloride concentration in the water.Measured chloride concentration in the water. |
| SULFATE | double | Measured sulfate concentration in the water.Measured sulfate concentration in the water. |
| POTASSIUM | double | Measured potassium concentration in the water.Measured potassium concentration in the water. |
| MAGNESIUM | double | Measured magnesium concentration in the water.Measured magnesium concentration in the water. |
| CALCIUM | double | Measured calcium concentration in the water.Measured calcium concentration in the water. |
| DISPLAY_FIELDDisplay field | string | Combined station name and year label for display.Combined station name and year label for display. |
| SHAPE | geometry | Geometric location of the monitoring station.Geometric location of the monitoring station. |
| SODIUM | double | Measured sodium concentration in the water.Measured sodium concentration in the water. |
Schema captured from arcgis 14 hours ago.
Query the data
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Sample data (3 records)
Record 1PH: 8.06 · COD: 6.32
{
"PH": 8.06,
"COD": 6.32,
"DBO": 2.8,
"ANNEE": 2020,
"N_NH4": 0.217,
"N_NO2": 0.1,
"N_NO3": 3,
"P_PO4": 0.254,
"SILICE": -99,
"SODIUM": 18.22,
"CALCIUM": 3.66,
"N_TOTAL": 3.3,
"OXYGENE": 9.56,
"P_TOTAL": 0.497,
"SULFATE": 69.45,
"CHLORURE": 20.5,
"OBJECTID": 1,
"COURS_EAU": "Avril (Nant d') - 106",
"MAGNESIUM": 0.95,
"POTASSIUM": 3.52,
"WORSTCASE": "Mauvais",
"ALCALINITE": 3.59,
"CODEMESURE": "R106K3850P0",
"DECLASSANT": "P-PO4",
"LIEN_FICHE": "https://ge.ch/sitg/geodata/SIEAU/QUALITE/FICHES_MONITORING/2020/R106K3850P0.pdf",
"SATURATION": 88.37,
"NOM_STATION": "Zimeysa",
"CONDUCTIVITE": 537,
"DISPLAY_FIELD": "Zimeysa / 2020",
"NB_PRELEVEMENT": 11
}Record 2PH: 8.02 · COD: 3.6
{
"PH": 8.02,
"COD": 3.6,
"DBO": 3.308,
"ANNEE": 2017,
"N_NH4": 0.015,
"N_NO2": 0.012,
"N_NO3": 2.93,
"P_PO4": 0.03,
"SILICE": -99,
"SODIUM": 9.164,
"CALCIUM": 5.737,
"N_TOTAL": 2.728,
"OXYGENE": 10.457,
"P_TOTAL": 0.038,
"SULFATE": 13.46,
"CHLORURE": 15.849,
"OBJECTID": 2,
"COURS_EAU": "Lion (Ruisseau Le ) - 810",
"MAGNESIUM": 0.55,
"POTASSIUM": 1.84350467,
"WORSTCASE": "Bon",
"ALCALINITE": 5.457,
"CODEMESURE": "R810K204P0",
"DECLASSANT": null,
"LIEN_FICHE": "https://ge.ch/sitg/geodata/SIEAU/QUALITE/FICHES_MONITORING/2017/R810K204P0.pdf",
"SATURATION": 91.138,
"NOM_STATION": "Vésegnin (F-01)",
"CONDUCTIVITE": 579.9,
"DISPLAY_FIELD": "Vésegnin (F-01) / 2017",
"NB_PRELEVEMENT": 12
}Record 3PH: 8.01 · COD: 4.17
{
"PH": 8.01,
"COD": 4.17,
"DBO": 1.62,
"ANNEE": 1999,
"N_NH4": 0.09,
"N_NO2": 0.155,
"N_NO3": 5.87,
"P_PO4": 0.217,
"SILICE": -99,
"SODIUM": 13.44,
"CALCIUM": 5.24,
"N_TOTAL": -99,
"OXYGENE": 12.06918,
"P_TOTAL": 0.357,
"SULFATE": 33.13,
"CHLORURE": 27.56,
"OBJECTID": 3,
"COURS_EAU": "Gobé (Ruisseau Le ) - 140",
"MAGNESIUM": 1.228,
"POTASSIUM": 4.92,
"WORSTCASE": "Mauvais",
"ALCALINITE": -99,
"CODEMESURE": "R140K96P0",
"DECLASSANT": "P-PO4",
"LIEN_FICHE": null,
"SATURATION": 116.2,
"NOM_STATION": "Vireloup",
"CONDUCTIVITE": 632,
"DISPLAY_FIELD": "Vireloup / 1999",
"NB_PRELEVEMENT": 12
}Live sample captured at profiling time — values may have changed upstream.
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© 2026 SITG
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curl -s 'https://vector.sitg.ge.ch/arcgis/rest/services/LCE_HYB_DC_MAJEURS/MapServer?f=json' -H 'Accept: application/json'Service definition: the list of layers.
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