Polish Society of Ecological Engineering (PTIE) was founded in 1990 and received its legal personality in the same year. It is a continuation of the Polish Committee for Development and Environment Protection (established in 1972) within the framework of the Chief Technical Organization (now Federation of Engineering Associations). The main objective of the PTIE establishment was taking action to adapt to the requirements of economic development environmental protection development. The statutory objectives of PTIE are realized through experts activity and paper publication. In terms of content PTIE activity focuses on popularizing rational use and conservation of natural environment and earth’s natural resources. With the current rapid advances in science, technique, dynamic economic development and overexploitation of natural resources, environmental engineering and its activities in line with the state of environmental policy it contributes to the so-called sustainable development, protection, adapts and creates the conditions necessary for human life, plants and animals. The Society currently has a well-established position in the world of science by issuing two scientific magazines in Polish and English. It cooperates with various research and educational centers, industries and as well as with local government, administration and state in solving local environmental economic problems. This paper presents the rise and activity of PTIE and major Society achievements in the years 1990–2015.