ABSTRACT
In order to satisfy its obligations as stipulated in European legislative, in 1998, the Management of Surface Waters in the Walloon Region modified its monitoring of plant protection products in surface waters in co-operation with the Regional Phyto Committee (LLN). Notably, this monitoring network takes into account the agricultural specifics of the main watersheds in Wallonia. It has led to the publication of a specific decree (A.G.W. of June 29th, 2000), which, among others, specifies the list of dangerous relevant substances in Walloon Region as well as their investigation methods (quality, monitoring network, action programmes). Together with the implementation of Directive 76/464/EEC concerning the pollution caused by some dangerous substances in aquatic environment, the Management of Surface Waters is also finalizing a database connected with plant production products. It contains technical data on active ingredients and relevant metabolites (nomenclature, toxicology, physico-chemical properties, ...), bibliographical information referring to these (synthesis of documents, table with results, ...) and some Internet connections. It has been elaborated so as to help Walloon public authorities make their decision.
