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- van der Hoek, J.P. (author), Mol, S (author), Ahmad, J.I. (author), Liu, G. (author), Medema, G.J. (author) conference paper 2017
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Vermeulen, L.C. (author), Kraker, J. (author), Hofstra, N. (author), Kroeze, C. (author), Medema, G. (author)Cryptosporidium is a protozoan parasite that can cause diarrhoea. Human faeces are an important source of Cryptosporidium in surface waters. We present a model to study the impact of sanitation, urbanization and population growth on human emissions of Cryptosporidium to surface waters. We build on a global model by Hofstra et al (2013 Sci. Total...journal article 2015
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Eisfeld, R.C.M. (author), Schijven, Jack F. (author), van der Wolf, Jan M. (author), Medema, G.J. (author), Kruisdijk, E. (author), van Breukelen, B.M. (author)Irrigation with surface water carrying plant pathogens poses a risk for agriculture. Managed aquifer recharge enhances fresh water availability while simultaneously it may reduce the risk of plant diseases by removal of pathogens during aquifer passage. We compared the transport of three plant pathogenic bacteria with Escherichia coli WR1 as...journal article 2022
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Taucer-Kapteijn, M. (author), Hoogenboezem, Wim (author), Medema, G.J. (author)Soil passage through sand dunes has previously been shown to remove enteric micro-organisms very effectively, and hence is used for the production of drinking water. However, enterococci have occasionally been isolated from abstracted water (after dune passage) in one of the dune infiltration areas in the Netherlands. Enterococcus moraviensis...journal article 2016
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Ahmad, J.I. (author), Dignum, Marco (author), Liu, G. (author), Medema, G.J. (author), van der Hoek, J.P. (author)Drinking water distribution systems (DWDSs) have been thoroughly studied, but the concept of thermal energy recovery from DWDSs is very new and has been conceptualized in the past few years. Cold recovery results in a temperature increase of the drinking water. Its effects on drinking water quality and biofilm development are unclear. Hence, we...journal article 2021
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Yao, Mingchen (author), Zhang, Yue (author), Dai, Zihan (author), Ren, Anran (author), Fang, Jiaxing (author), Li, Xiaoming (author), van der Meer, Walter (author), Medema, G.J. (author), Rose, Joan B. (author), Liu, Gang (author)Premise plumbing plays an essential role in determining the final quality of drinking water consumed by customers. However, little is known about the influences of plumbing configuration on water quality changes. This study selected parallel premise plumbing in the same building with different configurations, i.e., laboratory and toilet...journal article 2023
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Eisfeld, R.C.M. (author), van Breukelen, B.M. (author), Medema, G.J. (author), van der Wolf, Jan M. (author), Velstra, Jouke (author), Schijven, Jack F. (author)Agricultural aquifer storage recovery and transfer (ASTR) stores excess fresh water for later reuse in irrigation. Moreover, water quality improves because chemical pollutants and pathogens will be removed by degradation and attachment to the aquifer material. The source water may contain the bacterial plant pathogen Ralstonia solanacearum...journal article 2023
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Liu, G. (author), Tao, Yu (author), Zhang, Ya (author), Lut, M.C. (author), Knibbe, Willem Jan (author), van der Wielen, Paul (author), Liu, Wentso (author), Medema, G.J. (author), van der Meer, W.G.J. (author)Biofilm formation, loose deposit accumulation and water quality deterioration in drinking water distribution systems have been widely reported. However, the accumulation and distribution of harbored elements and microbes in the different niches (loose deposits, PVC-U biofilm, and HDPE biofilm) and their corresponding potential contribution to...journal article 2017
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Ahmad, J.I. (author), Liu, G. (author), van der Wielen, Paul (author), Medema, G.J. (author), van der Hoek, J.P. (author)Drinking water distribution systems (DWDSs) are used to supply hygienically safe and biologically stable water for human consumption. The potential of thermal energy recovery from drinking water has been explored recently to provide cooling for buildings. Yet, the effects of increased water temperature induced by this “cold recovery” on the...journal article 2020
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van der Hoek, J.P. (author), Mol, Stefan (author), Giorgi, Sara (author), Ahmad, J.I. (author), Liu, G. (author), Medema, G.J. (author)Greenhouse gas (GHG) emissions contribute to climate change. The public water utility of Amsterdam wants to operate climate neutrally in 2020 to reduce its GHG emissions. Energy recovery from the water cycle has a large potential to contribute to this goal: the recovered energy is an alternative for fossil fuel and thus contributes to the...journal article 2018
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van Bel, Nikki (author), Hornstra, Luc M. (author), van der Veen, Anita (author), Medema, G.J. (author)To ensure delivery of microbiologically safe drinking water, the physical integrity of the distribution system is an important control measure. During repair works or an incident the drinking water pipe is open and microbiologically contaminated water or soil may enter. Before taking the pipe back into service it must be cleaned. The efficacy of...journal article 2019
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Chen, L. (author), Ling, Fangqiong (author), Bakker, Geo (author), Liu, Wen Tso (author), Medema, G.J. (author), van der Meer, W.G.J. (author), Liu, G. (author)Worldwide, it is common that the drinking water distribution systems (DWDSs) may be subjected to changes of supply water quality due to the needs of upgrading the treatment processes or switching the source water. However, the potential impacts of quality changed supply water on the stabilized ecological niches within DWDSs and the associated...journal article 2020
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Dingemans, Milou M.L. (author), Smeets, Patrick W.M.H. (author), Medema, G.J. (author), Frijns, Jos (author), Raat, Klaasjan J. (author), van Wezel, Annemarie P. (author), Bartholomeus, Ruud P. (author)Freshwater is a precious resource, and shortages can lead to water stress, impacting agriculture, industry, and other sectors. Wastewater reuse is increasingly considered as an opportunity to meet the freshwater demand. Legislative frameworks are under development to support the responsible reuse of wastewater, i.e., to balance benefits and...review 2020