| S.NO | Name of Towns | Population | Present water supply level LPCD |
| Municipalities |
| 1 | Sirkazhi | 32228 | 65 |
| 2 | Nagapattinam | 93148 | 90 |
| 3 | Myiladuthurai | 84505 | 90 |
| 4 | Vedaranyam | 31627 | 65 |
| Town Panchayats |
| 1 | Vaitheeswarankoil | 7511 | 71 |
| 2 | Kuthalam | 13444 | 69 |
| 3 | Thittacheri | 8490 | 62 |
| 4 | Tharangambadi | 20843 | 45 |
| 5 | Manalmedu | 9275 | 69 |
| 6 | Velankanni | 10151 | 70 |
| 7 | Kelvellore | 7425 | 65 |
| 8 | Thalanayar | 11635 | 70 |