The Compendium Wallon des méthodes d’Echantillonnage et d’Analyse (CWEA) (Walloon Compendium of Sampling and Analysis Methods) groups together a set of methods intended for samplers and laboratories operating in the Walloon Region for the characterization of waste, soil, water and air in Wallonia.
* On December 10, 2023, a series of new and revised methods came into force (following the publication of the Ministerial Decree of May 22, 2023 in the Moniteur Belge on November 30, 2023).
* CWEA has a new interface accessible from the ISSeP website, and most of the methods are now laid out in a new layout.