Sustainable water resource management  is one of the basis of a sustainable community. Tency, from CSR - Center Scientific Research – give details about the programs Auroville is developing based on studies of  the bioregion aquifer done with the cooperation of the Tamil Nadul government. Reforestation, rain water infiltration and  the conscious use of the resource are the bases of this program. He also explains the devices the communities are using to recycle the waste waters system and  the big project that CSR is developing to  recycle all the waste watter of the city of Pondycherry.