The aim of the project was to evaluate the environmental relevance of potential endocrine disrupters in surface waters by comparing measured concentrations of the respective substances to newly proposed environmental quality standards (EQS). As a key action of the European Commission’s strategy for endocrine disrupting chemicals, 564 potential endocrine disrupters had been listed. Further 88 substances with potential endocrine effects were identified in the present project; 71 of these substances showed endocrine effects on aquatic organisms in vivo. Supplemental ecotoxicological data were compiled for these substances in order to propose EQS according to guidance provided by the Water Framework Directive. For 31 out of these 71 substances, endpoints specifically relating to endocrine disruption were more sensitive than other acute or chronic ecotoxicity data, while for 21 substances, other ecotoxicological endpoints were most sensitive. For 19 substances, no EQS proposal could be derived due to the lack of data. For 38 substances, measured concentrations in German surface waters were available. For 24 of these substances, measured concentrations in surface water exceeded the proposed annual average EQS. Hence, these substances were considered as potenitally relevant for the aquatic environment. It was suggested to integrate the monitoring of relevant endocrine disrupters into ongoing monitoring programmes of the German Federal States. Strategies to reduce concentrations of endocrine disrupters in rivers and streams should include source control and source separation. In addition, advanced treatment techniques at municipal sewage treatment plants are currently discussed.
ECT Oekotoxikologie GmbH is a privately owned enterprise that was founded in 1993.
In compliance with Good Laboratory Practice (GLP), we perform standardised ecotoxicological tests in the laboratory as well as at semi-field and field level.
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ECT Oekotoxikologie GmbH
Böttgerstraße 2 – 14
65439 Flörsheim am Main
Phone: +49 6145 9564-0
Fax: +49 6145 9564-99