Expression of interest (EOI)

Local contractor – Nghahelezi-Ng’anje Safe Water Supply Project

Location: Chamwino District, Dodoma Region
Organization: Water Mission

English version

1. Introduction

Water Mission (WM) is a Christian engineering non-governmental organization and non-profit NGO that provides safe and clean water and sanitation services to underserved communities, refugee camps and disaster-affected areas.

In Tanzania, Water Mission is registered under number I-NGO/00006524 and has operated since 2013. For more than ten years, the organization has implemented various water projects in:

• Dodoma Region, particularly Bahi and Chamwino districts
• Kigoma Region

In Dodoma Region, Water Mission has worked with the Government of Tanzania through the Ministry of Water and the Rural Water Supply and Sanitation Agency (RUWASA) to implement rural water-supply projects in Bahi and Chamwino districts.

2. Purpose of the expression of interest

Water Mission invites Expressions of Interest from qualified and legally registered local contractors or fundis capable of undertaking construction and installation works for the Nghahelezi-Ng’anje Solar-Powered Borehole Water Supply System in Chamwino District, Dodoma Region.

This EOI aims to identify competent contractors who may be considered during the subsequent quotation and procurement process.

3. Project background

The Nghahelezi-Ng’anje Safe Water Supply System will serve the villages of Nghahelezi and Ng’anje. The project is located in Dodoma Region, Tanzania, approximately 80 kilometres from Dodoma City.

The project is planned to provide water-supply infrastructure for the two communities. It includes:

• Demolition and construction of a new borehole chamber at the water source
• Storage-site facilities
• Water points
• Valve chambers
• Pipeline works
• Associated civil works

The selected contractor will work under Water Mission’s supervision and follow approved drawings, technical specifications and construction-quality requirements.

All construction materials will be provided by Water Mission.

4. Main scope of work

The contractor’s responsibilities will include:

• Mobilizing and demobilizing personnel, equipment and tools.
• Clearing the sites, setting out the works and undertaking construction and installation activities according to approved drawings and the Engineer’s instructions.
• Rehabilitating the existing pump house.
• Rehabilitating the existing treatment house and installing a new Erosion Chlorinator.
• Demolishing the existing borehole chamber and constructing a new borehole chamber.
• Removing the existing solar racks and constructing three new solar racks.
• Installing 45 solar panels and a tap for washing the solar panels.
• Removing the existing security fence around the borehole and solar-rack area.
• Constructing new security fences around the borehole and solar-rack area.
• Repainting four existing storage-tank pads, each supporting four 10 m³ polyethylene tanks.
• Constructing an 80 m³ ground-level masonry tank.
• Installing the specified tank fittings, including a sampling tap, and constructing a new security fence.
• Constructing valve chambers.
• Distributing pipes from the main community storage site to the respective pipeline networks.
• Unrolling and laying 14.15 kilometres of pipeline in prepared trenches.
• Fusing pipes, installing fittings and repairing leakages.
• Constructing eight public water points or tap stands.
• Installing eight prepaid meters.
• Constructing and installing pipeline marker posts at intervals of approximately 100 metres and labelling them as instructed.
• Moving materials from the on-site storage house or houses to the respective construction sites.
• Testing, inspecting, commissioning and handing over the completed system in coordination with Water Mission, RUWASA, the Community-Based Water Supply Organisation (CBWSO) and community authorities.

5. Mandatory eligibility requirements

Interested contractors must provide or demonstrate the following:

• A certified and relevant business licence for civil works.
• A certified Tax Identification Number (TIN) and compliance with civil and fiscal authorities.
• A certified VAT registration certificate.
• A certified company registration certificate or Certificate of Incorporation.
• A registration certificate from the Contractors Registration Board under the appropriate local category.
• A certified, current and relevant tax-clearance certificate for 2026.
• A business or company profile.
• Evidence of sufficient financial capacity to complete the works successfully.
• A stamped bank statement covering the most recent 12-month period, with June 2026 as the latest month.
• Demonstrated experience in constructing similar water systems, civil works, pipelines or related infrastructure.
• The capacity to provide a full-time Site Supervisor who is an Engineer or Technician with a Full Technician Certificate (FTC).
• A Site Supervisor with at least five years of relevant experience in projects of similar scale and complexity, preferably solar-powered water-supply projects.
• Suitably qualified personnel, tools, equipment and other resources required to complete the assignment within the specified implementation period.
• A commitment to follow Water Mission’s drawings, technical specifications, quality-assurance and quality-control procedures and site-safety requirements.
• Readiness to comply with Water Mission’s Protection from Sexual Exploitation and Abuse (PSEA) Policy.
• Readiness to comply with Water Mission’s Conflict of Interest Policy by declaring any actual, potential or perceived conflict of interest involving Water Mission staff.

Water Mission Tanzania reserves the right to verify the authenticity of all submitted documents at any stage of the procurement process.

6. Information to be submitted with the EOI

Applicants must submit:

• A signed and stamped Expression of Interest or cover letter.
• A business or company profile containing:
  • Physical address
  • Telephone number
  • Email address
  • Name of the authorized contact person
• A copy of a valid business or construction licence.
• A TIN certificate and relevant evidence of tax compliance.
• A VAT registration certificate.
• A company registration certificate, Certificate of Incorporation or BRELA document.
• A CRB registration certificate in Civil Works or both Civil and Building Works.
• A valid tax-clearance certificate.
• Evidence of previous experience in similar assignments.
• Details of at least three similar construction or service contracts completed successfully, including:
  • Client’s name
  • Client’s contact details
  • Project location
  • Scope of work
  • Year of completion
• CVs and qualifications of the proposed key personnel.
• A valid and current Power of Attorney.
• A summary of the annual value of construction works completed during the last three years.
• A list of available construction equipment, tools and other resources relevant to the assignment.

7. Technical capacity

The contractor should demonstrate practical capacity to manage and undertake:

• Civil construction works
• Reinforced-concrete works
• Masonry works
• Steel fabrication and welding
• Fencing
• Water-point construction
• Pipeline installation and fusion
• System testing
• Inspection
• Commissioning

The proposed team must be available at the project site and work closely with Water Mission personnel during setting out and construction.

8. Implementation and supervision

Water Mission staff will be present in the field to supervise and oversee implementation.

The contractor will be responsible for:

• Executing the works according to approved drawings and technical specifications.
• Maintaining quality assurance and quality control throughout the assignment.

9. Contractor declaration

The applicant should make the following declaration:

We hereby express our interest in participating as a local contractor for the Nghahelezi-Ng’anje Water Supply Project. We confirm that the information provided in this EOI and the supporting documents is accurate to the best of our knowledge. We understand that submission of this EOI does not constitute an award of contract and that Water Mission may evaluate submissions based on qualifications, relevant experience, technical capacity and other applicable procurement criteria.

10. Contractor information

Applicants should provide:

• Name of contractor or company
• Business or company registration number
• Valid licence number and class
• TIN
• Physical address
• Authorized contact person
• Telephone number and email address
• Number of years of relevant experience

11. Key personnel

Applicants should provide the name, qualifications and years of experience for each of the following:

• Site Supervisor – Engineer or Technician with an FTC
• Technician or fundi for masonry works
• Technician or fundi for welding works
• Technician or fundi for plumbing works

12. Relevant experience

For each relevant assignment, provide:

• Project or client name
• Location
• Scope of work
• Year of completion
• Client’s contact details

13. Submission checklist

Before submitting the EOI, ensure that the application includes:

• A signed and stamped Expression of Interest or cover letter.
• A business or company profile with the physical address, telephone number, email address and authorized contact person.
• A copy of a valid business or construction licence.
• A TIN certificate and relevant evidence of tax compliance.
• A VAT registration certificate.
• A company registration certificate, Certificate of Incorporation or BRELA document.
• A CRB registration certificate in Civil Works or both Civil and Building Works.
• A valid tax-clearance certificate.
• Evidence of at least three similar construction or service contracts completed successfully, including the client’s name, contact details, location, scope and completion year.
• CVs and qualifications of the proposed key personnel.
• A valid and current Power of Attorney.
• A summary of the annual value of construction works completed during the last three years.
• A list of available construction equipment, tools and other relevant resources.

14. Mode of submission

Interested contractors should submit their signed and stamped EOI documents, together with all required supporting documents, through either of the following methods:

Hard-copy submission

Submit the documents in a sealed envelope to:

Water Mission Tanzania
P.O. Box 102
Block A, Kisasa North
Ndugai Street
Dodoma, Tanzania

Email submission

Send an email to:

Email: [email protected]
Telephone: +255 762 757 458

Applicants submitting by email should write or reply “AM INTERESTED” and will receive a link through which they can provide their complete details.

All submissions must clearly indicate the project name:

Nghahelezi-Ng’anje Safe Water Supply Project

Submission deadline

The deadline is Sunday, 6 September 2026 at 17:30 EAT.

Late submissions will not be considered. Water Mission reserves the right to accept or reject any submission according to its procurement procedures.

Reference basis

Water Mission Request for Quotation – Nghahelezi-Ng’anje Safe Water Supply Project, Chamwino District, Dodoma Region.

RFQ/Tender Information and Attachments

For comprehensive information regarding this RFQ/tender, we invite you to download the attachments provided below. These documents contain all the necessary details, including specifications, requirements, and submission guidelines. Please review them carefully to ensure you have all the pertinent information needed to participate.

DOWNLOAD THE FULL TENDER NOTICE HERE

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