PT UNISYSTEM UTAMA is an Indonesian consulting services company that has special attention and strength in studies, research, investment, planning, evaluation, education and training, management and engineering in the fields of environment, architecture and construction, information technology, regional development and community empowerment, policy public and good governance , population and health, as well as integrated services between the various fields mentioned above. Established on October 10, 1974, Unisystem has at least 37 years experience with good performance in carrying out a number of development projects or programs in collaboration with the Government (at the Central and Regional) and international donor agencies such as: World Bank, Asian Development Bank, JBIC , etc.

Unisystem in collaboration with IWACO initiated the establishment of PT WASECO TIRTA in 1984 to support more specific consultancy services in the field of clean water, sanitation and environmental management.

To respond to various opportunities for consulting services in the field of environment that are specific and measurable , in 1990 Unisystem established PT UNILAB PERDANA which was certified √ KAN (LP-195-IDN). Unilab is engaged in environmental laboratory services that are able to serve the measurement of water quality, soil quality, air quality, noise levels, pollutants, and so on.

Unisystem is registered as a member of INKINDO (Indonesian Association of National Consultants) and KADIN (Chamber of Commerce and Industry).