Upgrade and Refurbishment of Winburg Water Treatment Works
Tender Overview
- Tender Number: VCW410/WINWTW/25
- Project: Upgrade and Refurbishment of Winburg Water Treatment Works
- Client: Vaal Central Water
- Location: Winburg
- Province: Free State
- Closing Date: 19 June 2026
- Closing Time: 12:00
Tender Categories
- Water Treatment Equipment, Supplies and Services
- Wet Services / Water and Sanitation
- Pumps, Valves, Pipes and Meters
- Repair, Service and Maintenance of Machinery and Equipment
Project Objective
The objective of this project is to upgrade and refurbish the Winburg Water Treatment Works to improve:
- Water treatment capacity
- Operational reliability
- Process efficiency
- Regulatory compliance
- Asset lifespan
- Water quality standards
The project includes extensive civil, mechanical, electrical, instrumentation, control, and ancillary infrastructure improvements.
Scope of Works
1. Civil Engineering Works
The civil component includes:
Site Preparation
- Site establishment
- Site clearance
- Temporary works
- Construction access arrangements
Earthworks
- Excavation
- Trenching
- Backfilling
- Compaction
- Bulk earthworks
Structural Construction
- New reinforced concrete structures
- Foundations
- Retaining structures
- Equipment plinths
- Valve chambers
- Pipe supports
Building Refurbishment
- Renovation of existing buildings
- Waterproofing works
- Roofing repairs
- Internal and external finishes
- Structural repairs
External Works
- Paving
- Walkways
- Drainage systems
- Site fencing
- Access roads
2. Mechanical Engineering Works
The mechanical scope includes:
Pumping Systems
- Installation of new pumps
- Refurbishment of existing pumps
- Pump station upgrades
- Associated pipework
Water Treatment Equipment
- Filters
- Mixers
- Valves
- Flow-control equipment
- Mechanical process equipment
Piping Systems
- New pipelines
- Pipe modifications
- Pipe supports
- Connections to existing infrastructure
Sludge Handling Facilities
- Refurbishment of sludge ponds
- Mechanical upgrades
- Associated process improvements
3. Electrical Engineering Works
The project requires installation and upgrading of:
Power Systems
- Electrical reticulation
- Power distribution systems
- Cable installations
- Earthing systems
Control Equipment
- Motor Control Centres (MCCs)
- Distribution boards
- Electrical panels
- Switchgear
Plant Electrical Infrastructure
- Motors
- Pump controls
- Electrical protection systems
- Emergency systems
4. Instrumentation and Control Systems
The contractor will install and commission:
Monitoring Equipment
- Flow meters
- Level transmitters
- Pressure sensors
- Process instrumentation
Automation Systems
- Telemetry systems
- Control systems
- Data acquisition systems
- Remote monitoring equipment
Process Control
- Automated plant control
- Instrument calibration
- System integration
- Operational optimisation
5. Ancillary Infrastructure
Additional works include:
- Refurbishment of buildings
- Pump station improvements
- Safety installations
- Security infrastructure
- Site services
- Utility connections
- Operational support facilities
Testing and Commissioning
The successful contractor will be responsible for:
- Factory acceptance testing (where applicable)
- Site testing
- Equipment commissioning
- System integration testing
- Functional performance testing
- Calibration of instruments
- Defect correction
- Final handover documentation
Health, Safety and Environmental Requirements
The contractor must:
Occupational Health and Safety
- Develop and implement a Health and Safety Plan.
- Appoint competent safety personnel.
- Conduct risk assessments.
- Ensure legal compliance with construction regulations.
Environmental Management
- Implement environmental management measures.
- Control pollution and waste.
- Protect surrounding natural resources.
- Manage construction impacts.
Quality Assurance
- Implement quality control procedures.
- Maintain inspection records.
- Comply with project specifications and standards.
Minimum Qualification Requirements
CIDB Requirements
Contractors must possess a minimum:
CIDB Grading
- 7 EP (Electrical Engineering Works), or
- 7 ME (Mechanical Engineering Works),
- Or a higher equivalent grading.
Required Professional Resources
The tender requires access to suitably qualified personnel such as:
Engineering Professionals
- Professional Engineer (Pr Eng)
- Professional Engineering Technologist (Pr Tech Eng)
Project Personnel
- Project Manager
- Construction Manager
- Site Agent
- Site Supervisors
- Quality Control Personnel
- Health and Safety Officer
Technical Specialists
- Mechanical Technicians
- Electrical Technicians
- Instrumentation Technicians
- Commissioning Specialists
Essential Contractor Experience
Bidders should demonstrate proven experience in:
- Water treatment plant construction
- Water treatment plant upgrades
- Pump station construction and refurbishment
- Mechanical process installations
- Electrical reticulation projects
- Instrumentation and control systems
- Municipal infrastructure projects
- Commissioning of treatment facilities
Experience on similar large-scale water infrastructure projects will be a significant advantage.
Compliance Requirements
The successful bidder must be:
Supplier Registration
- Registered on the Central Supplier Database (CSD).
Regulatory Compliance
- Tax compliant.
- Labour law compliant.
- Occupational Health and Safety compliant.
Transformation Compliance
- Compliant with applicable B-BBEE requirements.
- Submit required empowerment documentation.
Recommended Supporting Documents
Typically, bidders should include:
- CSD Registration Report
- Tax Compliance Status PIN
- CIDB Certificate
- Company Registration Documents
- B-BBEE Certificate/Affidavit
- Professional Registration Certificates
- Project Methodology
- Construction Programme
- Quality Management Plan
- Health and Safety Plan
- Organogram and CVs of Key Personnel
- Similar Project Reference Letters
- Financial Statements (if required)
Suitable Contractors
This tender is particularly suitable for:
- Water infrastructure contractors
- Civil engineering contractors
- Mechanical engineering contractors
- Electrical engineering contractors
- EPC (Engineering, Procurement and Construction) contractors
- Water treatment specialists
- Process engineering contractors
- Infrastructure development companies