The Observatory is informed of all major deliberations on water management, on which it issues an opinion prior to their presentation at the City Council. These deliberations concern, for instance, the price and quality of public drinking water and sanitation services as well as the annual activity report of Eau de Paris (service provider). The Observatory is composed of four boards representing: i) elected officials at municipal level, ii) consumers, iii) local institutions from the health, urban planning, land use and housing sectors, and iv) academia. Beyond institutional and professional actors, any individuals or associations can join.