In the cluster approach, ULBs have been clustered around existing or proposed treatment facilities within an average travel distance of 10 kms to ensure sharing of treatment facilities within the cluster. The average travel distance has been arrived at after a survey of operators across TN which revealed that this distance works best for the existing business models of operators. This distance is a thumb rule, and may need to be modified based on local conditions e.g. hilly areas, crowded highways etc.

The clustering of ULBs optimises the investments required to provide treatment infrastructure, and ensures that the treatment facilities are most likely located at the bigger ULBs that have the capacity and resources to manage these facilities. More details on clustering can be accessed in our website.