THE Corporation of Tiruchy is planning to set up a modern sewage treatment plant as part of the underground drainage (UGD) project within the city. The Tiruchy-Srirangam UGD project, along with the earlier one which is already functioning, is nearing completion. A third phase is also being drafted to accommodate the areas not covered under the earlier two phases. Meanwhile, the first phase is getting a new treatment plant in Panjappur with three pools and the cleaning process is under implementation.