Tamil Nadu has one operational Fecal Sludge Treatment Plant (FSTP) in Karunguzhi Town Panchayat, situated 82 km from Chennai. The FSTP is built on 1.5 acres of land and has a capacity of 23.40 kilo litre per day. The FSTP works on natural biological treatment system. This film shows the different units of the FSTP and how the treatment takes place.