Water Supply and Sanitation
RDC has long standing experience in the Water Supply and Sanitation sector starting from the early nineteen eighties. Since then the RDC team has not looked back and has performed successfully in a changing environment, applying lessons learnt with sound knowledge and balance. The implementation of a large number of development activities in Sri Lanka during the last three decades has enabled RDC to gain extensive experience in this sector.

The growing pressures from an increasing population and a complex environment have led to an urgent need for reliable water supply to meet the demands of rural and urban communities. New developments in the sector have assured that along with supply side initiatives, effective demand is assisted with improved systems of credit and financing. The growing demand and supply of water brings with it the need for both waste water and solid waste management. RDC has identified and developed expertise that is effectively able to cater to the various needs in the water supply and sanitation development sector.

Today RDC’s expertise has matured to cover comprehensive services that include all aspects of the Water Supply and Sanitation sector.

Areas of Capability:

  • Ground Water Investigation and Design
  • Design of Water and Waste Water Infrastructure,
  • Technical Assistance for Project Implementation
  • Design and Implementation of Community Water Supply & Sanitation Projects
  • Solid Waste Management
  • Decentralization of Services

Selected representative projects carried out by RDC in areas relevant to the Sector are briefly described below reflecting different aspects of the above mentioned component areas.  


Management and O&M of Mixed Credit Financed Water Supply, Sanitation and Sewerage Projects, TA from DANIDA/NWSDB

The National Water Supply and Drainage Board (NWSDB), Sri Lanka, is preparing to grant greater autonomy to the Regional Support Centres (RSCs), which are currently functioning as a department in NWSDB. This requires a whole range of management and business tools, including a business plan, before autonomy can be effective. DANIDA is supporting the GOSL in these efforts to rehabilitate and extend existing water supply and sewerage systems. RDC is fielding 5 consultants in the fields of water supply, training, curriculum development, and MIS for a period of 3 years.

Community Water Supply and Sanitation Projects (CWSSP)– Trincomalee and Ampara, Districts- World Bank TA for Project Implementation in the Eastern Province

Both projects (i.e. Ampara and Trincomalee) supports decentralized implementation of Rural Water Supply and Sanitation (RWSS) activities to local levels, backed by a community-based approach where beneficiary communities participate in decision-making at all stages of sub-project implementation. The community is represented by community-based organizations (CBOs), and held responsible for construction, operation and maintenance of water supply and sanitation facilities. This project provided technical assistance to the Eastern Provincial Council in carrying out its functions under this new initiative in relation to planning, implementation and management of the project. The Consultants also ensure effective transfer of expertise and advice on all matters of project planning and management in conformity with the Project Implementation Plan (PIP). The project targeted 3 local authorities in each of the two districts for the implementation of the RWSS activities. RDC fielded services of a Community Development Specialist, Water Supply technical specialist and a Hydro-geologist for each district, along with a financial assistant and a senior technical officer to each LA. The key task assigned to the consultants was the completion of sub projects at village level within the stipulated time frame, and assuring their sustainability by strengthening the CBOs.

Community Infrastructure Improvement Study, GTZ/Batticaloa District

GTZ required a community infrastructure development planning exercise carried out in the Batticaloa District. The Consultants were required to elaborate in a participatory and transparent manner a community infrastructure improvement plan for two Tsunami affected communities: 1) Kalkudah located in Valachenai Division and 2) Ondatchimadam located in the Kaluwanchikudi Division, Batticaloa District. RDC provided a team of engineers to carried out the following tasks: a) feasibility of an appropriate piped drinking water supply scheme for about 1,000 households in each village; b) assessed the current waste water and sewage system and proposed feasible and appropriate improvement measures; c) assessed the village road network and water drainage system especially in the Tsunami affected relocation and reconstruction locations, considering the repairs necessary and upgrading requirements; and d) assessed the feasibility of a community electrification improvement system.

Construction of Waste Water Collection / Disposal Systems – International Red Cross, Republic of Maldives

Construction of Wastewater /Disposal System where the works consisted of the supply of materials and equipment and the construction of small diameter sewerage collection systems and long sea outfall for the island of R. Dhuvaafaru in the Maldives together with the reinstatement of all disturbed surfaces. RDC provided the services of an Engineer to carry out site supervision of the construction works to ensure conformity with designs and drawings and applicable regulations.

ADB Funded Sri Lanka Water Supply Sector Project – Loan No. 817 SRI (SP), National Water Supply Drainage Board, Sri Lanka

The Project was designed to review 49 existing water supply schemes with potential for rehabilitating; selecting about 30 to 40 of those schemes for rehabilitation, prepare feasibility studies, appraisal reports, detailed engineering designs, estimates and contract documents for the same; assist the Executing Agency in evaluation bids and providing construction supervision and training services. RDC provided services in association with Sir Mac Donald and Partners of UK. The project addressed: a) physical rehabilitation of existing water supply facilities, b ) water accountability and reduction of non revenue water, c) provision of adequate O & M facilities and, d) obtaining financial viability for the upgraded water supply schemes. The Phase I of the project carried out feasibility studies based on the sub project selection criteria and Phase II addressed the Construction Supervision and Project Management aspects. RDC provided expertise in water supply, mechanical, electrical, structural and construction engineering. In addition, specialists were provided for services in social surveys, financial analysis and legal services.

Feasibility Study, Conceptual Design for Solid Waste Management Project, Embilipitiya – ADB funded Urban Development and Low Income Housing (UDLIH) Project ADB Loan No. 1632 (SRI – (SF)

The solid waste disposal site used in Embilipitiya was located close to a residential area and hence caused serious environmental problems. Therefore the Embilipitiya local authority selected solid waste management as one of their priority projects under the UDLIH project. This sub project involved the establishment of a new sanitary type solid waste disposal site including improvement of existing solid waste collections, transportation and disposal system in the urbanized area of Embilipitiya. The Project involved the introduction of waste separation and feasible waste reduction methods such as compost production so that an additional income to the local authority is ensured by marketing of such a by product. The sub project was to identify possible areas where the private sector could be involved in order to ensure efficient solid waste management system and propose suitable re-cycling methods especially for non degradable waste. RDC fielded expertise in solid waste management, drainage, town planning, environment, sociology, surveying, quantity and financial analysis.

EIA Study for Construction of Uplands Reservoir – Greater Kandy Water Supply Augmentation Project

The NWSDB was gearing up to augment the water supply facilities in the Greater Kandy area with Japanese financial assistance. It was proposed to construct a number of reservoirs and lay pipelines to improve the pipe borne water supply to the area, under the Greater Kandy Water Supply Augmentation Project of which one is the Uplands reservoir. The land proposed for the reservoir was within the Udawattekele forest reserve and involved clearing of forest and earth works. The EIA addressed the environmental issues in light of the planned works. RDC fielded consultants in the areas of Geology (Team Leader), water supply, environmental engineering, and forest ecology. Similar project carried out in the Colombo district in connection to the Weras Ganga Storm Water Drainage Project.


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