Impact of Escherichia coli from stormwater drainage on recreational water quality: an integrated monitoring and modellin
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RESEARCH ARTICLE
Impact of Escherichia coli from stormwater drainage on recreational water quality: an integrated monitoring and modelling of urban catchment, pipes and lake Yi Hong 1,2 & Frédéric Soulignac 3 & Adélaïde Roguet 4 & Chenlu Li 1 & Bruno J. Lemaire 1 & Rodolfo Scarati Martins 5 & Françoise Lucas 1 & Brigitte Vinçon-Leite 1 Received: 13 December 2019 / Accepted: 25 August 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract In recent years, recreational waterbodies are increasingly favoured in urban areas. In spite of the growing concerns for maintaining the required bathing water quality, the impacts of stormwater drainage are still poorly controlled. In this context, this study originally develops an integrated urban catchment-pipes-lake monitoring and modelling approach to simulate the impacts of microbial quality from stormwater drainage on recreational water quality. The modelling system consists of three separated components: the urban catchment component, the 3D lake hydrodynamic component and the 3D lake water quality component. A series of processes are simulated in the model, such as rainfall-discharge, build-up, wash-off of Escherichia coli (E. coli) on urban surfaces, sewer flows, hydrothermal dynamics of lake water and transport and mortality of E. coli in the lake. This integrated model is tested for an urban catchment and its related recreational lake located in the Great Paris region. Continuous monitoring and samplings were performed at the stormwater drainage outlet and three different sites in the lake. Comparing the measured data with simulation results over 20 months, the modelling system can correctly represent the E. coli dynamics in the stormwater sewer systems and in the lake. Although uncertainties related to parameter values, pollution sources and E. coli mortality processes could be further discussed, the good performance of this modelling approach emphasizes a promising potential for urban bathing water quality management. Keywords Escherichia coli . Recreational water . Urban stormwater drainage . Integrated monitoring and modelling . Process-based modelling . Build-up and wash-off
Introduction Responsible editor: Diane Purchase * Yi Hong [email protected] 1
LEESU, MA 102, École des Ponts ParisTech, AgroParisTech, UPEC, UPE, 77420 Champs-sur-Marne, France
2
Cooperative Institute for Great Lakes Research, University of Michigan, Ann Arbor, MI, USA
3
Ecological Engineering Laboratory, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
4
School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI 53204, USA
5
School of Engineering, University of Sao Paulo, Sao Paulo, Brazil
In recent years, recreational waterbodies are increasingly attractive and frequented in urban areas. This worldwide trend requires minimum standards for achieving and maintaining high water quality at all times to ensure the protection of public health. In accordance with the European Bathing Water Directive (Directive 2006/7/EC), the con
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