Article

Evaluating the usefulness of dynamic pollutant fate models for implementing the EU Water Framework Directive

BIOMATH, Department of Applied Mathematics, Biometrics and Process Control, Ghent University, Ghent, Belgium.
Chemosphere (Impact Factor: 3.34). 04/2009; 76(1):27-35. DOI: 10.1016/j.chemosphere.2009.02.046
Source: PubMed

ABSTRACT

The European Water Framework Directive (WFD) aims at achieving a good ecological and chemical status of surface waters in river basins by 2015. The chemical status is considered good if the Environmental Quality Standards (EQSs) are met for all substances listed on the priority list and eight additional specific emerging substances. To check compliance with these standards, the WFD requires the establishment of monitoring programmes. The minimum measuring frequency for priority substances is currently set at once per month. This can result in non-representative sampling and increased probability of misinterpretation of the surface water quality status. To assist in the classification of the water body, the combined use of monitoring data and pollutant fate models is recommended. More specifically, dynamic models are suggested, as possible exceedance of the quality standards can be predicted by such models. In the presented work, four realistic scenarios are designed and discussed to illustrate the usefulness of dynamic pollutant fate models for implementing the WFD. They comprise a combination of two priority substances and two rivers, representative for Western Europe.

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    • "Models help identifying measures to achieve a target ecological status, by taking into account possible management options (Kersebaum et al. 2003; Chaplot et al. 2004; Lohmann et al. 2007; Krause et al. 2008; Volk et al. 2009; Scheringer 2009). For example, Brock et al. (2006) assessed ecological protection goals for pesticides risk in surface waters and proposed considering multiple emission scenarios when evaluating ecotoxicological effects in support of EU policies; Zukowska et al. (2005) modeled fate and transport of selected POPs in the Vistula catchment investigating different scenarios of economic development and regulations; Gevaert et al. (2009) discussed scenarios to illustrate the usefulness of models in the implementation of the WFD for 2 priority substances in representative Western European rivers; Holzkämper et al. (2012) proposed the integrated catchment management as a tool to evaluate management options under high complexity and uncertainty; Volk et al. (2009) assessed river water quality depending on land‐use scenarios; the risk of chemicals has been considered for the Mediterranean region under crop‐specific (Ramos et al. 2007) and water scarcity (Petrovic et al. 2011) scenarios. However, the above studies conducted evaluations of policy alternatives with reference to limited areas or specific conditions, whereas it is increasingly important to extend assessments of chemicals over broad policy target areas such as the whole EU or the European continent. "
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