MINISTRY OF WATER, SANITATION & IRRIGATION TENDER OCTOBER 2025
SPECIFIC PROCUREMENT NOTICE (SPN)
Invitation for Bids
PROGRAMME: KENYA TOWNS SUSTAINABLE WATER SUPPLY AND SANITATION PROGRAM (KTSWSSP)
Intake Improvement Works for Migori & Isebania Towns Water Supply System and Ugunja Last Mile Connectivity Project
Date: 28th October 2025
Loan No.: 200200000501
IFB No.: CRVWWDA/LVS/AFDB/KTSWSSP/W/LMC/NIW/ MIG-ISEB & UGUNJA/2025-2026
- This Invitation for Bids follows the General Procurement Notice (GPN) for
this project that appeared in UN Development Business Online on 31st
March 2017. - 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.’’ - 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. - 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
| Material | Outer Diameter (mm) | Length (m) |
| HDPE PN 10 | 50.00 | 35,000.00 |
| HDPE PN 10 | 63.00 | 14,000.00 |
| HDPE PN 10 | 75.00 | 15,000.00 |
| HDPE PN 10 | 90.00 | 24,000.00 |
| HDPE PN 10 | 110.00 | 500.00 |
| Total | 88,500.00 |
Procure, supply and install consumer 1200 No. connection kit comprising
of approved smart enable consumer meters, saddle clamp, steel
standpipe with tap and 200m long DN 20mm lateral pipe complete
with 1.2m DN 20mm PPR pipe, lockable masonry meter chamber
and all necessary fitting for metered connection.
• Procure, supply and install institutional consumer 50 No. connection
kit comprising of approved consumer meters, saddle clamp,
steel standpipe with tap and 200m long DN 25mm lateral pipe
complete with 1.2m DN 25mm PPR pipe, lockable masonry meter
chamber and all necessary fitting for metered connection.
• Procure, supply and Install Smart Zonal metering system covering
the three zones of Ugunja, Ukwala and Sega.
• Undertake pending works at the Treatment Work Site as described
in the bidding documents.
5. Interested eligible bidders may obtain further information from and
inspect the bidding documents at the office of the Manager, Supply
Chain Management, Maji Plaza, Prisons Road, Off Nakuru – Eldama
Ravine Highway, and P.O. Box 2451-20100 Nakuru, Kenya at
the office hours from 08:00am to 04:00pm (East African Time) on
weekdays (Monday to Friday).
6. A Complete set of bidding documents in soft copy (CD) may be
purchased by interested bidders on the submission of a written
application to the above and upon payment of a non-refundable
fee of KES 1,000.00 (Kenya Shillings One Thousand Only).
7. The provisions in the Instructions to Bidders and in the General
Conditions of Contract are the provisions of the African Development
Bank Standard Bidding Document: Procurement of Works
and governed by Procurement Policy For Bank Group Funded Operations
of October, 2015.
8. Bidders are invited for a Pre-bid meeting to be held at Migori
Scheme Office, Boardroom on 11th November 2025 starting at
10.00am (East African time) followed by a site meeting the same
day as from 11:00 a.m at the Proposed Project sites for Intakes
Improvement for both Migori and Isebania Schemes and a further
Pre-Bid Meeting shall be held on 12th November 2025 starting
10:00am at Ugunja Scheme Office and Subsequent Site Visits to
the Proposed Ugunja Sega Ukwala Last Mile Connectivity Sites.
9. Bids must be delivered to the above office on or before 12.00pm
(East African time) on 12th December 2025 and must be accompanied
by a bid security of KES 2,000,000.00 (Kenya Shillings Two
Million Only) or equivalent amount in a freely convertible currency
and with a bid validity period of 120 days from bid submission date.
10. Bids will be opened in the presence of bidders’ representatives
who choose to attend at 12.05pm East African Time on
12th December 2025 at the offices of;
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