Sanitation - Wastewater treatment plants: performance indicators

The performance indicators for sanitation works are calculated on the basis of the [unit data collected as part of self-monitoring] (https://www.data.gouv.fr/en/datasets/assainissement-stations-depuration-monitoring-de-la-qualite-des-eaux-traites/) published elsewhere.

They concern treatment plants in the Seine-Normandie basin.

They shall be measured only for the following parameters:
- NGL: Global nitrogen
- NK: Nitrogen kjeldahl
- PT: Total phosphorus
- BOD5: Biochemical oxygen demand in 5 days
- COD: Chemical Oxygen Demand
- ESM: Suspended matter
- NH4: Ammonium
- NO2: Nitrites
- NO3: Nitrates
- PO4: Orthophosphates