The objective of this research work was to evaluate the use of rainwater as a resource for domestic use in Moyobamba, showing information about the use and consume of water, physical, chemical and microbiological analysis of the rainwater as well as the economical analysis (cost/benefit) of the rainwater micro collecting system in the urban and countryside which is the area of the research. In order to evaluate the advantages of using rain water for domestic purposes, there was an analysis of the current demand of water in the urban and countryside areas within the area of influence of the ordinary weather station in Moyobamba worked out through the Thinssen polygon method, which established that in any point of the river basin the amount of rainwater is the same as the one registered by the closest pluviometer; the demand analysis process is based on a probabilistic sample survey. Compl...