Suitability of CSO performance indicators for compliance with ambient water quality targets

The aim of the present paper is to assess the applicability of easily obtainable emission-based performance indicators for combined sewer overflows in order to describe the water quality in the receiving water. Theresultsof the computer simulations showed a correlation of some emission-based indicators with discharged loads. However, none of the emission-based indicators was correlated to acute effects. Owing to the correlation of the total overflow volume with the impacts in the receiving water, the outcomes of this study suggest thatreceiving waters in regions with a high annual rain volume are more endangered by combined sewer overflows.

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