Population growth, urbanisation, increasing industrialisation, climate change and a steep increase in water consumption are putting pressure on urban water resources in India. In order to cope with water shortages in urban areas, there is a need for a paradigm shift from conventional end-of-pipe water management to an integrated approach.

The main objective of the project is to develop a NaWaTech system which uses an integrated water management approach. This integrated approach should include several actions such as: (i) interventions over the entire urban water cycle; (ii) optimisation of water use by reusing wastewater and preventing pollution of freshwater source; (iii) prioritisation of small-scale natural and technical systems, which are flexible, cost-effective and require low operation and maintenance.

Natural water systems, such as constructed wetlands, bank filtration and storage via soil aquifer treatment and bank filtration, are such systems. The use of different urban water flows shall be optimised by treating each of these flows via a modular natural system taking into account the different nature and degree of pollution of the different water sources as well as the different requirements for different usages.