Environmental quality standards, also called threshold values, quality guidelines or criteria, are defined as "the concentration of a substance or group of substances which must not be exceeded", in order to protect the exposed organisms in the environment or humans via the environment against hazardous contaminants.
Environmental Quality Standards (EQS) are defined for chemical substances in the regulatory context of the Water Framework
Directive (WFD) (2000/60 / EC), which establishes a Community policy for the management of inland surface waters, groundwater, estuarine and coastal waters to promote their
sustainable use, protect their environment and improve the condition of aquatic ecosystems. There are defined under two schemes: the selection and regulation of the priority
substances of European Union wide concern and the selection by Member States of river basin specific pollutants of national or local concern for control at the
relevant level. The determination of these standards follows a specific methodology that has been developed at European level: the Technical Guidance for Deriving Environmental Quality Standards.
We propose to derive (or update) quality targets according to regulatory guidances to protect human health and the environment from hazard effects of contaminants present in various matrices (e.g. waters, sediment, soil, prey...) by:
Further, early warning signals or risk management failures can be identify by comparing the derived quality targets with reliable and representative monitoring datasets.