Through this communication is intended to realize the benefits that entails the use of ma-terials made by recycled plastics in pipes of sanitation for the building in front of the same, for the same purpose , but whose origin is the initial obtained from virgin raw ma-terials will be assessed the capacity of the line manufactured with recycled products aimed at the evacuation waters in buildings by substituting the preparation from virgin raw material with a view to achieving sustainable development through the comparison between environmental impacts with the technique of life-cycle analysis (LCA). The use of PVC materials-R (Poly Vinyl Chloride Recycling) from the recycling of various com-mercial products is going to allow the omission of a number of processes involved in the preparation of the final product as well as the exploitation through the recovery of a type of waste whose period of degradation seems very long and undesirable. The data of envi-ronmental pollution caused by the employment of the PVC pipes have been analyzed and incorporated into the inventory phase through the use of the software SimaPro8, thanks to this sight is the appropriateness of the use of recycled materials in the manufacturing process of this type of lines avoiding the reissue of polluting compounds in the atmos-phere to the generation of new raw materials for the manufacture of the pipes and the environmental impact that brings with it the whole process