Project Name

Detailed Description of  Services Provided Package 1: Improvement of water supply facilities in Welezo West and Welezo High Zones Existing Water Source Improvement Rehabilitation of Wells including Renewal of Well Pumps; at 8 wells Raw Water Transmission Pipeline to Welezo Reservoir; Ø150mm x 0.4km Welezo High Reservoir Welezo High Reservoir (2,000m3 x 1, Semi-Underground, RC … Continue reading Provision of Consultancy Services for the Zanzibar Urban Water Distribution Facilities Improvement Project
  • Client : Zanzibar Urban Water
  • Category : Water Resources, Supply and Sanitation
  • Location : Zanzibar

Project Name

Detailed Description of  Services Provided

Package 1: Improvement of water supply facilities in Welezo West and Welezo High Zones

Existing Water Source Improvement

  • Rehabilitation of Wells including Renewal of Well Pumps; at 8 wells
  • Raw Water Transmission Pipeline to Welezo Reservoir; Ø150mm x 0.4km

Welezo High Reservoir

  • Welezo High Reservoir (2,000m3 x 1, Semi-Underground, RC Structure), Lift Pump Facility, Elevated Tank (260m3 x 1, RC Structure), Elec./Monitoring Room, Disinfection Facility, Electrical Equipment, In-yard Piping, fencing and Landscaping

Transmission and Distribution Pipelines

  • Transmission Pipeline; Ø700mm-Ø350mm DCIP x 7.4 km Welezo West Zone:
  • Distribution Pipeline; Ø400mm-Ø200mm DCIP x 7.2 km

Package 2: Improvement of Water Supply Facilities in Migombani West Zone

Existing Water Source Improvement

  • Rehabilitation of Wells including Renewal of Well Pumps; at 15 wells
  • Raw Water Transmission Pipeline to Migombani Res.; Ø300mm-Ø100mm DCIP x 12.6 km

Migombani Reservoir

  • Migombani Reservoir (2,800m3 x 1, Elevated, PC Structure), Chlorine Mixing/Pump Well (700m3, RC Structure), Elec./Monitoring Room, Lift Pump Facility, Disinfection Facility, Electrical Equipment, In-yard Piping, fencing, and Landscaping

Distribution pipelines

  • Distribution Pipeline; Ø600mm-Ø200mm DCIP x 12.0 km Distribution Pipeline; Ø300mm-Ø100mm HDPE x 142.2 km

Service Connections

  • Service Connections including Meters; 7,600 nos.
    • for domestic users: 7,450 users (supplied through Manifold)
    • for bulk users: 150 users (with Receiving Tank)

Package 3: Installation of Monitoring and Control Facilities

Water Source Monitoring and Control Equipment

Installation of Remote Monitoring and Control Equipment Installation of Flow Meters and Water Level Meters Installation of Telecommunication Equipment Reservoir (Welezo, Migombani) Monitoring Equipment

Installation of Inflow / Outflow Meters, Water Level Meters, Monitoring Equipment and Telecommunication Equipment

District Metered Area (DMA) Monitoring Equipment

Installation of Flow Meters, Water Pressure Censer, Telecommunication Equipment

Central Monitoring

Installation of Central Monitoring Equipment (UPS, PC×2, Server×2, Printer×2).

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