The biggest problem of cities, as they reach the 21st century, is to meet the basic needs of their inhabitants. Population growth increasingly requires areas for housing and food production, and a site devoted to the waste generated by this population. With multiplication, the need for natural resources increases. The most discussed subject in this century is the water crisis. Added to the disastrous consequences that have led to the lack of appeal. The question of water needs to be rethought in relation to traditional management. That is, the capture and availability still come using molds from the beginning of the last century, which have contributed to increase environmental and financial losses, and above all contribute to poor quality of life. What this research intends to emphasize is the urgency of a change in the concept of treatment of domestic sewage, in order to reach the reuse of the treated effluent, which is the reuse. The hypothesis that it brings is to point out as a possible solution - constructed wetlands. The constructed wetlands is a type of sewage treatment that allows the reuse of water. The technology is simple, easy to maintain and economically favorable. The environmental advantages are representative with added social aspects. Household effluents are treated by plants known as: macrophytes, these mimic the cycles of nature, are the most appropriate for the purification process, do not use chemicals, nor anthropize areas for the implantation of the treatment plant, and waste generated are totally reused. The research focuses on the applicability of constructed wetlands, exemplifying architectural and urban design, which served to recover degraded urban areas, restoring natural life. The most relevant point is the resilience of the natural urban environment, of areas that have been degraded. The wetlands favor thermal equilibrium, which evidently represents the life value of the planet s species.