The processes of manufacture of textiles or wet treatments and finishing processes of textile supplies are huge consumers of water with elevated quality. As a result of these different processes, significant amounts of polluted water are released. This paper puts importance on the problem of environmental protection against waste waters generated by textile industry. The methods of pre-treatment or purification of waste waters in the textile industry can be: Primary (screening, sedimentation, homogenization, neutralization, mechanical flocculation, chemical coagulation), Secondary (aerobic and anaerobic treatment, aerated lagoons, activated sludge process, trickling filtration, oxidation ditch and pond) and Tertiary (membrane technologies, adsorption, oxidation procedure, electrolytic precipitation and foam fractionation, electrochemical processes, ion exchange method, photo catalytic degradation, thermal evaporation). The assortment of the purification method depends on the composition and type of waste waters.