300 contaminants in our water tables - datasets of threshold values and measurements (2016-2023)

Le Monde publishes the datasets produced as part of its survey "300 contaminants in our water tables: polluting by pollutant, our analysis of groundwater in France".

You will find three datasets in csv format:

• list_contaminants : the 300 parameters we analysed, with their typology by family of use and their threshold value if applicable.
• `dataset_map : aggregated data for our mapping of groundwater pollution in France.
• dataset_whole : all our data (parameters sought, quantifications, exceedances of threshold values, measurements, dates ...)

Ces données sont librement réutilisables à condition de faire référence au Monde et à cette page, et de nous en informer aux adresses sanchez[@]lemonde[.]fr et aubert[@]lemonde[.]fr.

Our analyses cover the period 2016-2023 (inclusive), for nearly 24700 control stations spread over the entire French territory. They are the result of a data extraction carried out on the [Groundwater Data Access Portal] (https://ades.eaufrance.fr/) on 16 April 2023.

Our methodology is available here.

For data on the quality of water bodies from the European monitoring cycle 2016-2021, visit the website of our cross-border collaboration ["Under the surface"] (https://europeanwaters.eu/map-database/).