The water consumption, which is pri

The water consumption, which is printed in water bills can be divided in two parts: the use itself and waste. The waste is usually due to leaking events or bad use of tap water in several daily activities. In public schools buildings, it?s often the irrational use of water due the user is not directly responsible for paying the water bill. In this context, the present research presents the methodology and results obtained in a field survey that was done to identify different ways of water use in a sample of public schools from Campinas, Sao Paulo, and it also be done the identification of which environments are responsible for higher portions of the water consumption and the proposition of a methodology to evaluate the users perception for the rational use of water at this building type. Moreover, one of the alternatives to achieve the rational use of water is the installation of water saving technologies at consumption points and the motivator reason to the implementation of these devices it is, normally, financial issues, then, this work shows a method to evaluate economic feasibility of the essential