Selection of Consultancy Services for...

Gambia The has announced a tender invitation for the Selection of Consultancy Services for Detailed Engineering Design and Construction Supervision of Water Supply Systems and the Kotu Faecal Sludge Treatment Plant Together with the Rehabilitation of Sanitation Infrastructure in Kotu and Banjul , aimed at improving structural stability and addressing erosion concerns in the tender area. The tender is situated in Gambia The, and it represents a key infrastructure initiative designed to enhance safety and environmental resilience. The tender is scheduled to close on 15 Oct 2026, giving interested contractors ample time to review requirements and submit their bids. The official tender notice number is not specified, while the WWW Reference Number is 13642842. Eligible bidders and organizations are encouraged to access the detailed tender documents and specifications to gain comprehensive information about project scope, eligibility criteria, and submission procedures.To download the complete tender documents, bidders are required to register on the website.

Tender Details

Title	Selection of Consultancy Services for Detailed Engineering Design and Construction Supervision of Water Supply Systems and the Kotu Faecal Sludge Treatment Plant Together with the Rehabilitation of Sanitation Infrastructure in Kotu and Banjul
WWT Ref No	13642842
Tender No	GM-NAWEC-565968-CS-QCBS
Country	Gambia The
Financer Name	The World Bank
Summary	Expression of Interest for Selection of Consultancy Services for Detailed Engineering Design and Construction Supervision of Water Supply Systems and the Kotu Faecal Sludge Treatment Plant Together with the Rehabilitation of Sanitation Infrastructure in Kotu and Banjul Project Title The Gambia Water and Sanitation Project Borrower Bid Reference GM NAWEC 565968 CS QCBS Procurement Method Quality And Cost Based Selection Submission Deadline Date Time Oct 15 2026 00 00 Notice No OP00468646 Scope of the Services The consulting services will be undertaken in five phases Phase 1 Feasibility Study Review existing studies plans records GIS data and infrastructure information Conduct socio economic service area demand and affordability assessments Undertake detailed feasibility studies for urban water supply and sanitation investments Assess climate resilience environmental and social requirements institutional arrangements technical options and implementation strategies Conduct economic and financial analyses including lifecycle costing and investment prioritization Prepare feasibility reports and preliminary designs Phase 2 Detailed Engineering Design Undertake topographic cadastral geotechnical laboratory and utility investigations Prepare detailed engineering designs for Water supply facilities including boreholes treatment systems reservoirs transmission mains distribution networks and SCADA Sanitation facilities include wastewater treatment systems fecal sludge treatment plants sewer networks pumping stations and sea outfall improvements Prepare design calculations drawings technical specifications cost estimates bills of quantities and O M documentation Prepare procurement ready engineering packages Phase 3 Procurement Support Prepare complete bidding documents and technical specifications Participate in pre bid meetings and site visits Provide support during bid evaluation and contract award processes Respond to technical clarifications and prepare addenda where required Phase 4 Construction Supervision and Contract Administration Supervise construction works and administer contracts Monitor quality assurance environmental and social compliance occupational health and safety cost and schedule performance Review contractor submissions and oversee testing and commissioning Support handover and completion Phase 5 Defects Liability Support Conduct inspections during the defect s liability period Verify correction of defects Support final completion and contract close out Duration The estimated duration of the assignment is 46 5 months including feasibility studies design procurement support construction supervision and defects liability support National Water and Electricity Company Limited NAWEC through the WASAP Project Implementation Unit PIU now invites eligible consulting firms Consultants to indicate their interest in providing the Services Interested Consultants should provide information demonstrating that they have the required qualifications and relevant experience to perform the Services Shortlisting Criteria Interested firms should demonstrate At least 15 years of experience in water supply and sanitation engineering At least 10 years of experience in feasibility studies detailed design and construction supervision of urban water and sanitation infrastructure Demonstrated experience in water treatment facilities transmission and distribution networks reservoirs SCADA systems wastewater treatment facilities sewerage systems pumping stations and fecal sludge treatment infrastructure Successful completion of at least two comparable assignments financed by multilateral development partners within the last seven years Demonstrated experience in Africa and familiarity with international forms of contract including FIDIC or equivalent Demonstrated quality assurance environmental and social management and occupational health and safety systems The qualifications and experience of Key Experts shall not be included in the shortlisting criteria Key Experts will not be evaluated at the shortlisting stage The attention of interested Consultants is drawn to Section III paragraphs 3 14 3 16 and 3 17 of the World Bank s Procurement Regulations for IPF Borrowers September 2023 setting forth the World Bank s policy on conflict of interest Consultants may associate with other firms to enhance their qualifications but should indicate clearly whether the association is in the form of a Joint Venture and or a sub consultancy In the case of a Joint Venture all partners shall be jointly and severally liable for the entire contract if selected The Consultant will be selected in accordance with the Quality and Cost Based Selection QCBS method set out in the World Bank Procurement Regulations The TOR and further information can be obtained at the address below during office hours Expressions of interest must be delivered in a written form to the address below in person or by mail or by fax or by e mail by October 15th 2026 Attention Mrs Haddy Njie Project Coordinator Address National Water Electricity Company Limited Project Implementation Unit Emporium III Building Fajara 114 Kairaba Avenue Floor Room number Conference Room 1st Floor City Banjul Country The Gambia Telephone 220 833664125 7009342 Electronic mail address hnjie nawec gm and copy asallah nawec gm

Deadline *

Deadline

15 Oct 2026

Publishing Date *

Publishing Date

18 Sep 2026

Tender Documents

World Wide Tenders

Selection of Consultancy Services for Detailed Engineering Design and Construction Supervision of Water Supply Systems and the Kotu Faecal Sludge Treatment Plant Together with the Rehabilitation of Sanitation Infrastructure in Kotu and Banjul

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