Household model of rainwater harvesting system in Mexican urban zones

This paper describes a household model of the rainwater harvesting system in residential development of Tlaquepaque, Jalisco, Mexico. Harvested rainwater is estimated for designing a rainwater catchment system which reflects the maximum water supply to a household. Based on the estimation of the harvested rainwater, the total water demand is calculated in order to explore the possible uses of rainwater. Major components in the rainwater catchment system are as follows: catchment area; downspout (roof drain pipe) and first flush tank; cistern; infiltration well; pumping station and filtering system; and ultraviolet (UV) water treatment. The rainwater harvesting system is designed to operate as the part of the central water supply system. This paper exposes the process of design and construction and its cost. In this way, it aims to establish a technical and conceptual reference, which enables the citizens to design their rainwater systems and their construction. This model will produce an important experience that can help to improve the systems in a Mexican context. It can be also useful for the international community. © Copyright.