Abstract
In this study, we investigated the microbiological quality of the small urban Zenne River which flows through the city of Brussels (Belgium). The abundances of faecal indicator bacteria (FIB) (Escherichia coli and intestinal enterococci) revealed high levels of faecal contamination of the Zenne River, especially in Brussels area and downstream from this area where FIB were in the range of what is usually observed in secondary treated wastewaters. The origin of this faecal contamination is mainly attributed to the effluents of the two wastewater treatment plants (WWTPs) located along the river in Brussels. Comparison of the present situation with the 1990s situation (before the implementation of Brussels WWTPs) showed a sharp improvement of the river microbiological quality. This improvement should however be regarded with care as it was also observed that, during rain events, combined sewer overflows (CSO) outfalls were responsible of a strong increase of faecal contamination in the river downstream from Brussels, and such CSO occur frequently in Brussels. Altogether, these results document the variations of the microbiological quality of a sewage-polluted urban river in relation with long-term changes (implementation of WWTP) and the short-term disturbances (CSO).
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.References
Edberg, S. C., Rice, E. W., Karlin, R. J., & Allen, M. J. (2000). Escherichia coli: the best biological drinking water indicator for public health protection. Journal of Applied Microbiology, 88, 106S–116S.
EU Directive 2006/7/EC of the European Parliament and of the Council of 15 February. (2006). Concerning the management of bathing water quality. Official Journal of the European Union, 64, 37–51.
Fewtrell, L., Bartram, J. (2001). Water quality: guidelines, standards and health. World Health Organization Water Series (pp 20–21). London: IWA Publishing.
Garcia-Armisen, T., & Servais, P. (2007). Respective contributions of point and non-point sources of E. coli and enterococci in a large urbanised watershed (the Seine River, France). Journal of Environmental Management, 82, 512–518.
Garcia-Armisen, T., & Servais, P. (2009). Partitioning and fate of particle-associated E. coli in river waters. Water Environment Research, 81, 21–28.
Garcia-Armisen, T., Prats, J., & Servais, P. (2007). Comparison of culturable fecal coliforms and Escherichia coli enumeration in freshwaters. Canadian Journal of Microbiology, 53(6), 798–801.
George, I., Crop, P., & Servais, P. (2002). Fecal coliforms removal in wastewater treatment plants studied by plate counts and enzymatic methods. Water Research, 36, 2607–2617.
Kay, D., Crowther, J., Stapleton, C. M., Wyer, M. D., Fewtrell, L., Edwards, A., et al. (2008). Faecal indicator organism concentrations in sewage and treated effluents. Water Research, 42, 442–454.
Kirschner, A. K. T., Kavka, G., Velimirov, B., Mach, R. L., Sommer, R., & Farnleitner, A. H. (2009). Microbiological water quality along the Danube River: integrating data from two whole-river surveys and a transnational monitoring network. Water Research, 43, 3673–3684.
Kistemann, T., Rind, E., Rechenburg, A., Koch, C., Classen, T., Herbst, S., et al. (2008). A comparison of efficiencies of microbiological pollution removal in six sewage treatment plants with different treatment systems. International Journal of Hygiene and Environmental Health, 211, 534–545.
Le, H. M., Petrovic, D., & Verbanck, M. A. (2014). The semi-sewer river: hydraulic backwater effects and CSO reverse flows in Central Brussels now shown to reduce deoxygenation impact further downstream. Water Science & Technology, 69, 903–908.
Lucas, F., Goncalves, A., Servais, P., Rocher, V., Masnada, S., Thérial, C., et al. (2012). Variability of sewage bacterial quality in a large urban area. Techniques, Sciences, Méthodes, 4, 44–55.
Lucas, F., Thérial, C., Goncalves, A., Servais, P., Rocher, V., & Mouchel, J. M. (2014). Variation of raw wastewater microbiological quality in dry and wet weather conditions. Environmental Science and Pollution Research, 21, 5318–5328.
Lyautey, E., Wilkes, G., Miller, J. J., Bochove, E. V., Schreier, H., Koning, W., et al. (2011). Variation of an indicator of Escherichia coli persistence from surface waters of mixed-use watersheds, and relationship with environmental factors. Annales de Limnologie - International Journal of Limnology, 47, 11–19.
Madoux-Humery, A. S., Dorner, S., Sauvé, S., Aboulfadl, K., Galarneau, M., Servais, P., et al. (2013). Temporal variability of combined sewer overflow contaminants: evaluation of wastewater micropollutants as tracers of fecal contamination. Water Research, 47, 4370–4382.
Marsalek, J., Dutka, B. J., & Tsanis, K. I. (1994). Urban impacts on microbiological pollution of the St Clair River in Sarnia, Ontario. Water Science and Technology, 30, 177–184.
Miranda, J. M., Franco, C. M., Vàzquez, B. I., Fente, C. A., Barros-Velàzquez, J., & Cepeda, A. (2005). Evaluation of Chromocult enterococci agar for the isolation and selective enumeration of Enterococcus spp. in broilers. Letters in Applied Microbiology, 41, 153–156.
Ouattara, K. N., Passerat, J., & Servais, P. (2011). Faecal contamination of the water and sediment in the rivers of the Scheldt drainage network. Environmental Monitoring and Assessment, 183, 243–257.
Passerat, J., Ouattara, K. N., Mouchel, J. M., Rocher, V., & Servais, P. (2011). Impact of an intense combined sewer overflow event on the microbiological water quality of the Seine River. Water Research, 45, 893–903.
Petrovic, D., Brion, N., Magnier, A., Elskens, M., Verbanck, M. A. (2012). Effect of intense rainfall events on metallic and particulate pollutant fluxes in a small urban watercourse. Proc. 9th International conference on urban drainage modelling (Belgrade, Serbia - September 2012) ISBN 978-86-7518-156-9.
Prats, J., Garcia-Armisen, T., Larrea, J., & Servais, P. (2008). Comparison of culture-based methods to enumerate Escherichia coli in tropical and temperate freshwaters. Letters in Applied Microbiology, 46, 243–248.
Rechenburg, A., Koch, C., Classen, T., & Kistemann, T. (2006). Impact of sewage treatment plants and combined sewer overflow basins on the microbiological quality of surface water. Water Science and Technology, 54(3), 95–99.
Rose, J. B., Dickson, L. J., Farrah, S. R., & Carnahan, R. P. (1996). Removal of pathogenic and indicator microorganisms by full-scale water reclamation facility. Water Research, 30, 2785–2797.
Servais, P., Garcia-Armisen, T., George, I., & Billen, G. (2007). Fecal bacteria in the rivers of the Seine drainage network (France): sources, fate and modelling. Science of the Total Environment, 375, 152–167.
Suter, E., Juhl, A. R., & O’Mullan, G. D. (2011). Particle association of enterococcus and total bacteria in the lower Hudson River estuary, USA. Journal of Water Resource and Protection, 3, 715–725.
Tryland, I., Surman, S., & Berg, J. D. (2002). Monitoring faecal contamination of the Thames estuary using semi-automated early warning system. Water Science and Technology, 46, 25–31.
UWWD Directive 91/271/ECC Directive on urban waste water treatment (1991). Official Journal of the European Community Council, 135/40-135/52.
Yaziz, M., & Lloyd, B. J. (1979). The removal of salmonellas in conventional sewage treatment processes. Journal of Applied Bacteriology, 46, 131–142.
Acknowledgments
This study was mainly performed in the scope of the GESZ research project (Towards the Good Ecological Status of River Zenne: Reevaluating Brussels wastewater management) from the “Impulse Environment 2008” programme of the Brussels Institute for Research and Innovation (Innoviris). A part of the work was also performed in the scope of the project “Tracing and Integrated Modelling of Natural and Anthropogenic effects on Hydrosystems” (TIMOTHY), an Interuniversity Attraction Pole (IAP6.13) funded by the Belgian Federal Science Policy Office (BELSPO). N.K. Ouattara benefits from doctoral grants from Ivory Coast Government and from “Fonds Van Buuren” (Université Libre de Bruxelles). The authors thank the Hydrologisch Informatiecentrum (HIC) for giving access to the Zenne River flow rates data, AQUIRIS for giving access to flow rates treated in Brussels North WWTP data and FLOWBRU for communicating discharges of CSO during studied rain events.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Ouattara, N.K., Garcia-Armisen, T., Anzil, A. et al. Impact of Wastewater Release on the Faecal Contamination of a Small Urban River: The Zenne River in Brussels (Belgium). Water Air Soil Pollut 225, 2043 (2014). https://doi.org/10.1007/s11270-014-2043-5
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s11270-014-2043-5