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Urban water supply, Industrial water and Sewerage projects

Upgradation of water supply and sewerage system



Waghala Municipal Corporation is an important religious center in Maharashtra State. This project work includes Study of existing infrastructure facilities, preparation of project proposals, preparation DPR, getting approval of CPHEEO for the DPR, preparation of tender document, assisting corporation in bidding process to identify contractors, and construction supervision pertaining to water supply and sewerage components. TWIC took up this challenging project to complete the assignment in 20 months to facilitate the Municipal Corporation for meeting the infrastructure requirements of a multi million tourist population expected for a Sikh festival which occurs once in 12 years.

Salient Features

Project Populations for the Years 2023 1.12 Million
Project Populations for the Years 2038 1.84 Millon
Total Project Cost Rs. 3500 Millions

Unique Aspects / Details of the Project

Water Supply System

  • Transmission system: 36. Km Steel and Ductile Iron for diameters varying 600mm to 900mm
  • 18 No. Reinforced Concrete Cement Service storages: 1.0 MI to 2.50 MI capacity
  • Water treatment Plant 2 Nos. capacity 35.0MLD
  • Distribution System : Ductile Iron pipe lines – 287 km with diameter range 100mm to 900mm

Sewage Collection System

  • Collection system with diameters varying from 200 mm to 1400 mm sizes and length 305 km.(RCC NP4 & NP3 pipes)
  • Sewage treatment Plant 87 MLD & 30 MLD (Aerated Lagoons and Extended Aeration process respectively)
  • Sewage pumping stations – 5 Nos of largest capacity 2244 Cum hr against 37 m head
  • Sewage pumping mains with diameters varying from 350 mm to 1000mm sizes and length 10.5 Km

Beneficiaries of the Project

The local population and the multi million pilgrims

Impact of the Project

Assisted Govt. of Maharashtra in providing safe drinking water and efficient sanitation to the local as well as pilgrim population

Agencies/Institutions involved in implementation of the project

Tata Consulting Engineers
Shah Technical Consultants

Preparation of DPR for water supply improvement in distribution system for 26 municipalities


The Scope of the assignment is to prepare DPR for each Municipalities for the improvements of water supply distribution system viz, study the existing system including distribution network, availability of storage capacity, inequity in distribution, inadequacy of storage capacity, staging height of service reservoirs, non-optimal service reservoir locations, defects in the pipes and suggest measures to ensure daily and equitable water supply to the consumers. The scope also includes preparation of bid documents for the suggested improvement works and the Investment plan.

Chennai Desalination Project


Chennai city with a population of 75 Lakhs has water demand of approximately 1500 MLD. Chennai is dependent on rainwater and surface water resources to meet this demand. In order to supplement the available resources, Government of Tamil Nadu in the year 2004 decided to implement a mega water project based on desalination. The capacity of the desalination project was envisaged at 300 MLD along with associated piping of 50km and a power project of 100 MW

TWIC was engaged by Government of Tamil Nadu to carry out the pre-feasibility study of the project. TWIC developed and prepared the report, which addressed the following issues:

  • Selection of project sites
  • Technology assessment
  • Preliminary technical and commercial evaluation

These reports formed the basis for implementation of the desalination projects in Chennai


Industrial Effluent Treatment and Water reuse projects for industry

Tirupur Textile Effluent Management Project, Tirupur

Written by Administrator On Tuesday, 22 November 2011 06:48


Client: Tirupur Textile Dyeing Industries

TWIC assisted nine Common Effluent Treatment Plants in development of zero discharge solution for the bleaching and dying units in Tirupur. The total effluent treatment capacity of these nine CETPs is 53,000 cum per day, forming the majority of the effluents generated in Tirupur. The cost of this project was Rs. 4200 millions.

The scope of work undertaken by TWIC was preparation of detailed project reports, selection of technology and project specification, design engineering, procurement of contractor, arranging finance for the project and implementation supervision. The components of the ZLD CETP are Pipeline for effluent conveyance, Pre-treatment works, Reverse Osmosis plant, Evaporator plant, and Recovered water distribution system.

TWIC has also developed an alternate technology called “Treated Brine Reuse Technology” which substantially reduces the dependence on evaporator. This has been successfully demonstrated at Arulpuram CETP and is now being implement in the remaining TWIC developed CETPs.


Biological Treatment

Reverse Osmosis System

Untreated & Treated Samples

Implementation of Zero Liquid Effluent Treatment Project for tannery cluster

Written by Administrator On Tuesday, 22 November 2011 06:43


Client: Ambur Economic Development Organization Limited

Project Management services for Zero Liquid Discharge (ZLD) based 3 Common Effluent treatment plants with capacities ranging from 1 MLD to 4 MLD (combined capacities of 7.2 MLD) in Ambur and Vaniyambadi Tannery cluster. These CETPs have Membrane Bio-Reactor as pre-treatment for RO systems and Evaporator for RO reject management.

The project cost of approx. Rs. 1000 Million was financed through a mixture of Government grant (50%) commercial loans (25%) and industry contribution (75%).

RO plant at Ambur site

Evaporator section at Ambur site

MBR System for Tannery CETP

Technical and Commercial Feasibility

Written by Administrator On Tuesday, 22 November 2011 06:38


For Development, Financing, Implementation and Operation of Zero Liquid Discharge Effluent Project for paper and Pulp effluent

Client: Tamilnadu Newsprint and Papers Limited, Karur

TWIC had entered in to an agreement for Preparation of Technical and Commercial Feasibility report as a precursor for Development, Financing, Implementation and Operation of Zero Liquid Discharge Effluent Project for paper and Pulp effluent. As part of the project TWIC has carried out Design, Implementation and Operation and Maintenance of a Pilot plant.

Currently the 120 m3/d pilot plant has been successfully commissioned and trials are under progress.

Aeration Tank

Ultra filtration Unit

RO unit

Reactor Clarifier

Marine Outfall Facility for treated effluent at Barndix Textile Park, Vizag, AP

Written by Administrator On Tuesday, 22 November 2011 06:12


Client: Brandix India Apparel City

Brandix Apparel City was being developed as a SEZ for attracting textile investment near Visakhapatnam. The project envisages a treatment and disposal system for 45 MLD of textile effluent.

While the treatment system was developed by Brandix, TWIC was mandated to assist in development of a marine disposal system consisting of 6.5 km of on-shore segment and 2.5 km of offshore segment which consists of 560mm OD, PN-6, PE100 Onshore pipeline, 6143m long with additional 3744mm for future operation and offshore part of 560mm OD, PN-8, PE100 pipeline, 250m long along with diffuser system at 20m water depth for the outfall system.

The cost of the project is Rs. 210 Million. The project has been completed and commissioned.

HDPE Pipe for Marine Disposal

Disposal System in Deep Sea


Operation and Maintenance

Operation and Maintenance


Client: Tirupur Textile Dyeing Industries

O&M services for Zero Liquid Discharge (ZLD) based nine Common Effluent treatment plants with capacities ranging from 3 MLD to 11 MLD (combined capacities of 53 MLD) in Tirupur textile cluster. The effluent from various industries collected, metered, and conveyed to the Common Effluent Treatment Plant (CETP) for treatment and recovered water distributed back to the industries for processing. These CETPs are equipped with Pre-treatment system (Biological Oxidation system based on Activated Sludge Process), Reverse Osmosis system and Mechanical Evaporator for RO reject handling.

TWIC has well qualified and experienced team of Managers, Engineers, Chemists, Operators and Technicians who man the CETPs round the clock.

Chemical Analysis

Microbial Analysis

Microbial Analysis

Monitoring of Softener

Monitoring of Resin Bed

RO System Monitoring

1.Tirupur Textile Effluent Management Project, Tirupur


BOOT Projects

Tirupur Water Supply and Sewerage Project


First water supply project in the Public Private Partnership framework

New Tirupur Area Development Corporation Limited (NTADCL) has been established as a special purpose vehicle for development and implementation of the Tirupur Water Supply and Sewerage Project. NTADCL is promoted by TWIC along with Tirupur Exporters Association, to implement the first water sector related project under the public-private partnership framework in the country. It is the first water supply project in India to be financed commercially on a limited recourse basis. A Concession Agreement has been Signed in 2000 between Govt of Tamilnadu, NTADCL and Tirupur Municipality(TM )

Under the project, facilities have been constructed to extract, treat and supply 185 million litres of water per day (MLD) from the river Cauvery. Water is being supplied to the dyeing and bleaching industries and domestic consumers in and around Tirupur. Domestic consumers of Tirupur Municipality(TM), fifteen villages panchayats and three town panchayats with a total population of 8,00,000 are also supplied with water. These provide umbrella coverage for the entire water supply requirements of Tirupur Planning area spread over 225 SqKm. In addition, water supply is being provided to enroute habitations in five wayside unions. The water supply project has been completed to time, cost and standards. NTADCL has already commenced supply of water to all consumers, both industrial and domestic continuously since 2005.

The project also includes construction of a sewerage system for Tirupur Municipality and onsite sanitation facilities for slums within TM . The sewerage system has been completed.

Salient Features

Water Quantity to be supplied 185 Million Liters per Day
Concession Period 30 years
Cost of the Project Rs. 10230 Million
Debt Rs. 6138 Million
Equity Rs. 3227 Million
Sub-Debt Rs. 865 Million

Unique Aspects / Details of the Project

  • First Water & Sanitation Project in the country to be implemented on a Public-Private Partnership format.
  • First water project in India to be funded on a Project Finance, non-recourse basis.
  • Largest private investment in the Urban Infrastructure sector.
  • Leverages State support by 19 times {Rs.550 million of state financing helps raise over Rs.10000 million for the project}.
  • Provides a viable model for implementing other projects in the sector.
  • Tamil Nadu is the first State in the country to set up a Public-Private Partnership based institution in the sector, namely Tamil Nadu Water Investment Company.

Beneficiaries of the Project

1. Rural households
  • No. of villages/habitations 629
  • Population 324669
  • Quantity (2006) 18.66 mld and (2031) 26.07 mld
2. Urban households
  • No. of towns 3
  • Population 422432
  • Quantity (2006) 19.83 mld and (2031) 31.15 mld
3. New sanitation network covering over 60 per cent Population of Tirupur
4. Low cost sanitation facilities for slum areas
5. Providing quality water to the processing industries of Tirupur

Impact of the Project

  • Position Tamil Nadu as the premier location for textile (knitwear export) industry.
  • Help industrial growth
  • Improve health & hygiene conditions for households.
  • Free-up waiting time, particularly for women for water collection from tankers.
  • Dignity of life, particularly for women through private in-house sanitation.
  • Create enhanced opportunities for employment and poverty reduction.
  • Protect groundwater exploitation.
  • Free-up ground water for agricultural growth, productivity and development.

Agencies/Institutions involved in implementation of the project

Sponsors of the Project Government of Tamil Nadu and IL&FS
Promoter of the Project Tamil Nadu Water Investment Company Ltd.
Design Contractors Bechtel ,United Kingdom
EPC Contractors Hindusthan Construction Company & Larsen &Toubro
Operations & Maintenance United Utilities (UK) & Mahindra
Project Management Wilbur Smith Associates (USA)
Owners Representative GKW (Germany) & Consulting Engineer Services
Independent Engineer Frischmann Prabhu India P Ltd (UK)
Independent Auditor S B Billimoria & Co.
Lead Financial Institution Industrial Development Bank of India
Lead Banker State Bank of India
Overseas Funding USAID

Raw Water Pumping Station

Filter House at Night


Water Treatment Plant

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