| Location | Telephone |
| Area Office I | 25544415 |
| Area Office Il | 25226651 |
| Area Office Ill | 25517814 |
| Area Office IV | 26444623 |
| Area Office V | 26212101 |
| Central Complaint Cell | 28535312 |
| Regiomal Office I Kilpauk Water Works,ch-10 | 26441179 |
| Regional Office Il,cmwssb, chennai-52. | 26590360 |