EcoImpact – unraveling the ecological impact of micropollutants in streams

EcoImpact is an Eawag-wide interdisciplinary research effort. It aims at understanding how micropollutants (MP) discharged from wastewater treatment plants (WWTPs) affect stream ecosystems. The project is motivated by on-going upgrading of the Swiss WWTPs with advanced treatment steps for MP removal. 

EcoImpact 1

EcoImpact 1 was conducted from 2013 to 2016. It focused on in-stream observations upstream and downstream of at 24 WWTPs across the Swiss Plateau and the Jura. Additionally, flume experiments were developed to tease apart the influence of different wastewater constituents (MPs, nutrients). 

Further information on EcoImpact 1

EcoImpact 2.0

EcoImpact 2.0 starts in spring 2019. It builds on results of the previous stage and puts its main emphasis on flume experiments. It studied how the stream biofilms –communities consisting of algae, bacteria and fungi with important ecological functions – respond to MPs.

Further information on EcoImpact 2.0


Dr. Christian Stamm Deputy Director Tel. +41 58 765 5565 Send Mail

Latest publications

Tamminen, M.; Spaak, J.; Tlili, A.; Eggen, R.; Stamm, C.; Räsänen, K. (2022) Wastewater constituents impact biofilm microbial community in receiving streams, Science of the Total Environment, 807(3), 151080 (8 pp.), doi:10.1016/j.scitotenv.2021.151080, Institutional Repository
Carles, L.; Wullschleger, S.; Joss, A.; Eggen, R. I. L.; Schirmer, K.; Schuwirth, N.; Stamm, C.; Tlili, A. (2021) Impact of wastewater on the microbial diversity of periphyton and its tolerance to micropollutants in an engineered flow-through channel system, Water Research, 203, 117486 (14 pp.), doi:10.1016/j.watres.2021.117486, Institutional Repository
Tlili, A.; Corcoll, N.; Arrhenius, Å.; Backhaus, T.; Hollender, J.; Creusot, N.; Wagner, B.; Behra, R. (2020) Tolerance patterns in stream biofilms link complex chemical pollution to ecological impacts, Environmental Science and Technology, 54(17), 10745-10753, doi:10.1021/acs.est.0c02975, Institutional Repository
Burdon, F. J.; Bai, Y.; Reyes, M.; Tamminen, M.; Staudacher, P.; Mangold, S.; Singer, H.; Räsänen, K.; Joss, A.; Tiegs, S. D.; Jokela, J.; Eggen, R. I. L.; Stamm, C. (2020) Stream microbial communities and ecosystem functioning show complex responses to multiple stressors in wastewater, Global Change Biology, 26(11), 6363-6382, doi:10.1111/gcb.15302, Institutional Repository
Creusot, N.; Casado-Martinez, C.; Chiaia-Hernandez, A.; Kiefer, K.; Ferrari, B. J. D.; Fu, Q.; Munz, N.; Stamm, C.; Tlili, A.; Hollender, J. (2020) Retrospective screening of high-resolution mass spectrometry archived digital samples can improve environmental risk assessment of emerging contaminants: a case study on antifungal azoles, Environment International, 139, 105708 (10 pp.), doi:10.1016/j.envint.2020.105708, Institutional Repository
Arlos, M. J.; Schürz, F.; Fu, Q.; Lauper, B. B.; Stamm, C.; Hollender, J. (2020) Coupling river concentration simulations with a toxicokinetic model effectively predicts the internal concentrations of wastewater-derived micropollutants in field gammarids, Environmental Science and Technology, 54(3), 1710-1719, doi:10.1021/acs.est.9b05736, Institutional Repository