PHCs in Tamil Nadu being ranked Primary Health Centres (PHCs) in Tamil Nadu are now being ranked based on 20 key indicators to assess their performance and track their progress over a period of time. Tamil Nadu has a total of 2,127 PHCs. It has been done for the first time by the Directorate of Public Health (DPH) and Preventive Medicine. The ranking include the subcategories of upgraded PHCs, additional PHCs, urban PHCs and those located in hilly areas. The exercise will be done on a monthly basis. The indicators enlisted for the ranking criteria include Average outpatients/day/medical officer in position Inpatient/month for the institution Deliveries conducted per month Sterilisation performed/month/functional operation theatres Average laboratory About Department of Public Health and Preventive Medicine Responsible for the implementation of various National and State Health Programmes. Objective - Prevention and control of waterborne diseases like Acute Diarrheal Diseases, Typhoid, Dysentry prevention and control of sexually transmitted diseases including HIV / AIDS.