# Tamil Nadu Water Supply and Drainage Board

Tamil Nadu Water Supply and Drainage Board (TWAD Board) is a public agency formed by the Government of Tamil Nadu, under the Municipal Administration and Water Supply Department, assigned with the task of implementing all water supply and sewerage schemes to the state of Tamil Nadu (except the Chennai Metropolitan Area).
TWAD Board coordinates with the Government of India's Ministry of Rural Development and Departments of Drinking Water Supply, Ministry of Water Resources, National River Conservation Directorate, Rajiv Gandhi National Drinking Water Mission, Central Ground Water Board, Non Government Organisations (NGOs), academic institutions, etc., to implement the water supply and sewerage schemes in Tamilnadu.

## History

The local bodies were entrusted with the task of providing the amenities of water supply and drainage schemes initially. Then arose the necessity for an organisation of fully trained and experienced personnel on the Government side for the execution and maintenance of water supply and drainage schemes at satisfactory standards and minimum cost.
Hence the Sanitary Engineering Branch of the Madras Public Works Department was entrusted with the task of the investigation, design, execution and maintenance of the water supply and drainage schemes of all the local bodies in the state.
In the year 1962, the Sanitary Engineers circle and the Public Health Execution Circle were brought under the control of a separate Public Health Engineering and Municipal Works Department.
In the year 1966, the Public Health Engineering Department was reorganised on a territorial basis, with a view to cope with the increased work load and to ensure speedy execution of the schemes, when a number of water supply and drainage schemes were taken up.
Accordingly two Public Health Engineering circles were formed at Madras and Madurai, headed by separate Superintending Engineers, with exclusive jurisdiction to investigate, design, execute and maintain all urban water supply and drainage schemes.
The Government of Tamil Nadu constituted, the Tamilnadu Water Supply and Drainage (TWAD) Board as a non-statutory body during 1969. Statutory status was given to the Board with effect from 14.4.1971 by an enactment passed by the Tamil Nadu State Legislature.

## Functions

TWAD Board undertakes investigation, execution and maintenance of any scheme for the provision of watersupply and sewerage facilities, to meet the needs of any industries or institutions within the area of the local authority on the direction of state Government.
The watersupply and sewerage schemes undertaken by TWAD Board are handed over to the respective local bodies for maintenance on completion. However schemes of composite nature covering more than one local body are maintained by TWAD Board.

## Funding Agencies

* Govt of India, under JnNURM, UIDSSMT AMRUT, IUDM
* Govt of Tamil Nadu under Minimum Needs Programme
* World Bank aided through TNUDP III
* KfW (German Bank aid)
* JICA (Japan aid).

## Structure

The headquarters at Chennai co-ordinates with all the regional offices and government agencies for effective implementation of various watersupply and sewerage projects through the following units :
* Project Development Cell (PDC)
* Contract Management (CoM) Wing
* Project Management (PM) Wing
* Mega Project Monitoring wing
* Operation & Management (O&M)
* Research, Development , Training & PMC (RDT & PMC) Wing
* Communication and Capacity Development (CCDU) Unit
| Region | Headquarters | Districts Covered | Circles | No. of Divisions |
| Coimbatore Region | Coimbatore | Coimbatore, Nilgiris, Erode, Tirupur, Karur Salem, Namakkal | 1.) Coimbatore - Nilgiris Circle, 2.) Erode - Tiruppur - Karur Circle, 3.) Salem - Namakkal Circle. | 8 8 7 |
| Vellore Region | Vellore | Kanchipuram, Tiruvallur, Vellore, Tiruvannamalai, Cuddalore, Villupuram, Dharmapuri, Krishnagiri | 1.) Kanchipuram - Tiruvallur Circle, 2.) Vellore-Tiruvannamalai Circle, 3.) Cuddalore - Villupuram Circle, 4.) Dharmapuri - Krishnagiri Circle, 5.) Project Maintenance Circle, Dharmapuri | 3 6 4 1 3 |
| Madurai Region | Madurai | Madurai, Dindigul, Theni, Sivagangai, Ramanathapuram, Thoothukudi, Virudhunagar, Thirunelveli, Kanyakumari | 1.) Madurai - Dindigul - Theni Circle, 2.)Sivagangai - Ramanathapuram cum Project Maintenance Circle, 3.) Thoothukudi - Virudhunagar Circle, 4.) Thirunelveli, Kanyakumari 5.) Sewerage Circle, Madurai | 8 4 6 6 5 |
| Thanjavur Region | Thanjavur | Thanjavur, Thiruvarur, Nagapattinam, Trichy, Perambalur, Pudukottai | 1.) Thanjavur - Thiruvarur - Nagapattinam Circle, 2.) Trichy - Perambalur Ariyalur - Pudukottai Circle 3.) Sewerage Circle, Thanjavur 4.) Sewerage Circle, Tindivanam | 5 7 2 2 |

## Combined Water Supply Schemes (CWSS)

| S.No | Name of the scheme | River | Location | Beneficiaries | Capacity (MLD) | Districts Served |
| 1 | Hogenakkal Integrated Drinking Water Project | Cauvery | Hogenakkal | 3 Municipalities 17 Town Panchayats 7639 Rural Habitations. | 120 | Dharmapuri and Krishnagiri |
| 2 | Ramanathapuram Mega Drinking Water Supply Project | Cauvery | Mutharasanallur & Kadiakurichi in Trichy District | 5 Municipalities 11 Town Panchayats 3163 rural habitations | 100 | Ramnathapuram, Sivaganga and Pudukottai |
| 3 | CWSS to Vellore Corporation, 11 Municipalities, 5 Town Panchayats & 944 wayside Rural habitations in Vellore district | Cauvery | Thottilpatti Village near Mettur Dam | Vellore Corporation 11 Municipalities 5 Town Panchayats 944 Rural habitations | 181 | Vellore |
| 4 | Augmentation of water supply to Palladam Municipality, 23 town panchayats and 965 rural habitations in Coimbatore and Tiruppur District | Bhavani | Pillur reservoir | Palladam Municipality 23 Town panchayats 965 rural habitations | 125 | Coimbatore and Tiruppur |
| 5 | CWSS to Melur, Avaniapuram, Thirumangalam Municipalities, Thirunagar, Vilangudi, Paravai, A.Vellalapatti, Alanganallur, Palamedu Town Panchayats and 1430 rural habitations in 8 unions of Madurai District and Singampunari Town Panchayat in Sivagangai District. | Cauvery | Near Kulithalai | 3 Municipalities 7 Town Panchayats 1430 Rural Habitations. | 84 | Madurai Sivagangai |
| 6 | CWSS to 1153 Habitations in 9 Unions and Peravurani, Perumagalur And Adiramapattinam Town Panchayats in Thanjavur District | Kollidam | | 7 Town Panchayats 1153 Rural Habitations | 38.11 | Thanjavur |
| 7 | CWSS to Natham & 2 Town Panchayats and 1276 Rural Habitations with Bulk Provision to 2 Town Panchayats and 354 Rural Habitations in Dindigul District and Bulk Provision to 135 Habitations in Trichy District | Cauvery | | 5 Town Panchayats 1765 Rural Habitations | 48.10 | Dindigul Trichy |
| 8 | CWSS To 1751 Rural Habitations in Kunnandarkoil (Part), Gandarvakottai , Karambakudi , Thiruvarangulam , Aranthangi , Viralimalai (Part), Annavasal (Part) and Pudukkottai (Part) Unions of Pudukkottai District and Vallam Town Panchayat in Thanjavur District. | Kollidam | Near Thiruchennampoondi | 1 Town Panchayats 1751 Rural Habitations | 23.23 | Pudukkottai Thanjavur |
| 9 | Providing CWSS To 1766 Rural Habitations In Viralimalai (Part), Annavasal (Part), Ponnamaravathy,Tthirumayam, Arimalam, Kunnandarkoil (Part) And Pudukottai (Part) Of Pudukottai District And 125 Habitations In S.pudur And Sakottai Panchayat Union In Sivagangai District | Cauvery | near Thirupparaithurai village. | 1766 Rural Habitations | 23.12 | Pudukottai Sivagangai |
| 10 | Providing CWSS To Attur And Narasingapuram Municipalities, 20 Town Panchayats And 1,345 Rural Habitations In 12 Panchayat Unions Of Salem District. | Cauvery | Thottilpatti Village near Mettur Dam | 2 Municipalities 20 Town Panchayats 1345 Rural Habitations. | 84.134 | Salem |

## Sewerage schemes

| S.No. | Name of the scheme |
| 1 | Chinnamanur Municipality |
| 2 | Maraimalainagar Municipality |
| 3 | Namakkal Municipality |
| 4 | Ramanathapuram Municipality |
| 5 | Dharmapuri Municipality |
| 6 | Perambalur Municipality |
| 7 | Thiruvannamalai Municipality |
| 8 | Thiruvarur Municipality |
| 9 | Villupuram Municipality |
| 10 | Mamallapuram Town Panchayat |
| 11 | Theni- Allinagaram Municipality |
| 12 | Thiruchendur Town Panchayat |
| 13 | Orathanadu Town Panchayat |
| 14 | Cuddalore Municipal Corporation |
| 15 | Udumalpettai Municipality |
| 16 | Nagapattinam Municipality |
| 17 | Pudhukkottai Municipality |
| 18 | Thiruvallur Municipality |
| 19 | Krishnagiri Municipality |
| 20 | Ariyalur Municipality |
| 21 | Septage Management in Karunguzhi Town Panchayat |
| 22 | Periyakulam Municipality |
| 23 | Thoothukkudi Municipal Corporation |
| 24 | Virudhunagar Municipality |
| 25 | Sivagangai Municipality |
| 26 | Nagerkoil Municipal Corporation |
| 27 | Mettur Municipality |
| 28 | Arakkonam Municipality |
| 29 | Thirupathur Municipality |
| 30 | Bodinayakkanaur Municipality |
| 31 | Rasipuram Municipality |
| 32 | Karaikkudi Municipality |
| 33 | Chidambaram Municipality |
| 34 | Sathur Municipality |
| 35 | Sathiyamangalam Municipality |
| 36 | Pollachi Municipality |
| 37 | Palanichettipatti Town Panchayat |
| 38 | Ulundhurpettai Municipality |
| 39 | Perundhurai Town Panchayat |
| 40 | Thirupporur Town Panchayat |
| 41 | Ponneri Municipality |
| 42 | Vallam Town Panchayat |
| 43 | Mettupalayam Municipality |