The Association of Indonesian Sanitation and Environmental Engineering Experts (IATPI) is an association of experts in the field of Sanitary Engineering (TP) and Environmental Engineering (TL) which includes clean water supply, waste management, liquid waste management, air pollution control, B3 waste management, recovery environmental damage, and drainage. Formed in Bandung in October 1977, IATPI currently has more than 1000 members who work in the government, private sector, universities, NGOs, and others. In addition to running the Water Pollution Control Manager (MPPA) certification, IATPI also carries out certification for TL experts in the field of construction services. IATPI is involved in policy studies, product design, training, and technology exhibitions in the field of TP / TL