INTAKE IMPROVEMENT WORKS FOR MIGORI & ISEBANIA TOWNS WATER SUPPLY SYSTEM AND UGUNJA LAST MILE CONNECTIVITY PROJECT.

MINISTRY OF WATER AND SANITATION TENDER MARCH 2025 

CENTRAL RIFT VALLEY WATER WORKS DEVELOPMENT AGENCY

SPECIFIC PROCUREMENT NOTICE (SPN)
INVITATION FOR BIDS

1. This Invitation for Bids follows the General Procurement Notice (GPN) for this project that appeared in UN Development
   Business Online on 31st March 2017.
2. The Government of Kenya has received Financing from the African Development Bank in various currencies towards
   financing the Kenya Towns Sustainable Water Supply and Sanitation Program. It is intended that part of the proceeds
   of this loan will be applied to eligible payments under the contract for “Intake Improvement Works for Migori &
   Isebania Towns Water Supply System and Ugunja Last Mile Connectivity Project.’’
3. Central Rift Valley Water Works Development Agency (CRVWWDA) on behalf of Lake Victoria South Water Water Works
   Development Agency (LVSWWDA) now invites sealed bids from eligible bidders for execution of the above project.
4. The scope of works includes but not limited to the following under one contract:
   Migori-Isebania Intake Works
   • Sorore Intake Weir Construction: Construct an 8-meter-long intake weir across the Hibwa River, ensuring proper
   foundation and structural integrity to withstand flow conditions.
   • Sorore Pre Sedimentation Tank Construction: Construct a 15m x 2.5m x 2.5m deep sedimentation tank adjacent
   to the intake weir.
   • Sorore Raw Water Main: Procure, supply, and lay a 3.3 km long DN 450mm PN 10 HDPE pipe Gravity Raw
   Water Main.
   • Oyani Intake Retaining Wall Construction: Construct a 240-meter-long retaining wall along the upstream and
   downstream embankments of the Oyani Intake weir, as per design drawings.
   • Oyani Treatment Works Modifications: Modify the flocculation channels and sedimentation tank at the Otani
   Treatment Works to accommodate a sedimentation tank desludging system.
   • Oyani Raw Water main: Procure, Supply, and Install Raw Water Main: Procure, supply, and install a 460-meter-
   long DN 630mm PN 10 HDPE pipe Gravity Raw Water Main
   • Migori Treatment Works Installation: Supply and install a 15-meter-high, 150m3 steel overhead backwash tank
   at the Migori Treatment Works site. Include necessary piping, access platforms, and safety features.
   Ugunja Sega Ukwala Last Mile Connectivity Works
   • Procure, Supply, Install and Test run 80 Km of distributions lines in Ugunja, Sega and Ukwala Towns as detained
   in the table below and annex drawings

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