This report presents the populated technology inventory, i.e. the database compiled after collecting information on the technologies relevant to the EcoWater Case Studies. In addition to the generic database information, the inventory holds data on technology economic parameters, technology environmental parameters and technology efficiency parameters. The actual technology inventory is delivered as an Excel workbook, holding one sheet per EcoWater Case Study. Each Case Study worksheet follows the same structure, but they differ in terms of which parameters are considered of importance to the technologies added. This technology inventory (Deliverable 1.3), has been populated with data from the Case Studies. This report also describes the theory around the water system and innovative technologies researched in the project, as well as the environmental midpoint impact categories used to assess the environmental performance of technologies in the Case Studies. This report is only available in English.