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Theo Sarris

Theo holds a Master’s degree in Civil and Environmental Engineering from Aristotle University of Thessaloniki, Greece and a Master’s and a Doctoral degree in Groundwater Hydrology from the University of South Carolina, USA. After receiving his doctoral degree Theo worked for 10 years at various government advisory roles in Europe. He joined ESR in 2016, after working for four year as an engineering consultant in Auckland.

Theo’s background is in stochastic modelling of groundwater and surface water systems. As he explains “in science and engineering we need models of groundwater systems in order to understand why a flow system is behaving in a particular observed manner and to predict how the same or a similar system will behave in the future. The fact that the subsurface is hidden from view, makes subsurface modelling so interesting but also challenging”.

His research interests include the simulation of groundwater flow and contaminant movement in heterogeneous aquifers, environmental risk analysis, quantification of uncertainty in water resources and optimisation of monitoring systems and reactors. Theo works with ESR’s Groundwater team in an ambitious and promising program to induce denitrification in fast flowing alluvial gravel aquifers. The program “'Enhanced Mitigation of Nitrate in Groundwater” tests in the lab and in the field three innovative methods that will potentially remove significant amounts of nitrate from groundwater.

Theo is also the founder and current president of the New Zealand Chapter of the International Association of Hydrogeologists (external link)