This paper presents longtime (1986-2001) researches waste waters quality from "Djuka Dinic" tanery, Nis (Serbia, Serbia&Montenegro), as well as their influence to recipients (municipal sewers and the Nisava river).Needed grades of purification of relevant pollutants to recipient are defined as well as schematic possible solutions for waste water purification. The most optimal solution for purification of waste water from tanery from "Djuka Dinic", Nis, is common leading of waste waters to municipal sewers (waste waters from factory 2 for pig leather treatment enter now to the Nisava river without purification) with adequate pretreatment. Based to recently experiences as well as laboratory researches pretreatment consist of: rudely dispersed material removal (grates and sieves), equalization, primary sedimentation and coagulation with flocculation and sedimentation gives good results. Meanwhile, technological purification scheme that include separation flot from leaching and tannering from common flow of collective waste waters and their special treatment, respectively repeated use, has significantly adventages: pollution decreasing of collective waste water, saving of basic reagents that use as raw materials in treatment leather in recuperation or repeated use, eliminating waste sludge with chromium and economize of purification process.