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Objectifs: Les objectifs de cette etude etaient de determiner le niveau de concentration en metaux traces (Cadmium, Plomb, Fer) de la colonne d’eau et du tilapia (poisson la plus consommee au Senegal) echantillonnes sur des etangs de Dakar afin d’evaluer les risques potentiels pour la sante humaine lies a leur consommation. Methodologie et Resultats: Les echantillons d’eau et de poisson ont ete collectes dans 5 etangs (Mbeubeuss, Mbao, Technopole, Camberene et Parc Hann) et les variations des concentrations en metaux traces entre sites et organes ont ete etudiees apres dosage par spectrometrie d’absorption atomique. Seules les concentrations de Cd dans l’eau a l’etang de Mbeubeuss (0,22 μg.l -1 ) etaient superieures aux criteres sur la protection de l’eau (0,2 μg.l -1 ). Les teneurs en Pb et en Cd dans la chair des tilapias etaient inferieures aux normes recommandees par l’Union Europeenne et ne constituent pas un risque pour la sante humaine. Conclusions et applications: Le foie des poissons a enregistre les teneurs les plus elevees en metaux traces en tout site. Le calcul du quotient de danger pour le Pb et le Cd a revele qu’il n’y avait pas de risques sanitaires lies a la consommation des tilapias peches dans ces etangs. Ces resultats pourraient servir aux autorites publiques pour recommander la consommation des poissons tout en renforcant la preservation des zones humides dans le cadre d’un developpement durable. Mots cles: Etangs, Colonne d’eau, Tilapia, Metaux traces, Risque sanitaire English Title:  Concentrations and human health risks of trace metals in water and tilapia from five ponds of Dakar English Abstract Objectives: The objectives of this study were to determine the concentration of trace metals (Cadmium, Lead and Iron) of the water column and tilapia (fish most consumed in Senegal) sampled on Dakar ponds in order to evaluate the potential risks to human health related to their consumption. Methodology and Results: The water and fish samples were collected in 5 ponds (Mbeubeuss, Mbao, Technopole, Camberene and Parc Hann) and the variations in trace metals concentrations between sites and organs were investigated after atomic absorption spectrometric determination. Only Cd concentrations in water of Mbeubeuss pond (0.22 μg.l -1 ) exceeded the water protection criteria (0.2 μg.l -1 ). The results showed that concentrations of Cd and Pb in tilapia meat were below the limit values established by the European Community and pose no threat to public health Conclusions and application of findings: The fish liver recorded the highest levels of trace metals at any site. The calculation of the hazard quotient for Pb and Cd revealed that there was no health risks related to the consumption of tilapia caught in these ponds. These results could be used by public authorities to recommend fish consumption while strengthening the preservation of wetlands as part of sustainable development. Keywords: Ponds, Water column, Tilapia, Trace metals, Health risk

Teneurs en métaux traces des eaux et poissons de cinq étangs de Dakar et risques pour la santé humaine