Tethys was established in 2008 by professionals with vast experience in the environmental field and in particular, in technical geology and applied hydrogeology. We operate in the sectors of - contaminated site characterisation and remediation - groundwater resource management - geographic information systems (GIS). We have also gained specific experience in supporting the design and building of road and rail infrastructures. We employ the best available informatics (flow and transport modelling with Modflow, MT3D, Feflow, GIS), together with analytical and surveying tools, in order to provide the best response to Clients’ needs. Our consultancy covers both the technical and legal sectors, availing of the broad experience gained in administrative appeals and criminal proceedings concerning various environmental issues.