Tenders


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Tender Instruction

The tender document can be purchased from Oman Water and Wastewater Services Company (Nama Water Services) e-tendering page (Supplier Login) from the date of publication of this announcement until the last date of purchase. 
The applicants shall pay the tender fee through the electronic payment gateway on the Supplier Login page. Applicants who are not registered with Oman Water and Wastewater Services Company (Nama Water Services) shall register at https://owwsc.nama.om/Business-with-Us/Vendor-Registration to obtain login credentials for the Supplier portal. 
All applicants who have paid the tender fee shall have access to the Tender Documents through Nama Water Services e-Tendering page (Supplier Login). All participating companies must submit a Bid Bond of 1% of the bid value in a sealed envelope to The Chairman of the Tender Committee no later than 2:00 PM on the bid submission date. 
The Bid Bond must be obtained from a bank registered in the Sultanate of Oman and should be addressed in favor of Nama Water Services. The bid, along with all required documents, must be uploaded through the Nama Water Services e-Tendering page no later than 2:00 PM on the date specified above. For more information, please refer to the Tender Page on our website www.owwsc.nama.om or email us at tender@owwsc.nama.om or interact in the online tender discussions.

Note to Bidders: Dear Participants, once your offer is ready, please submit your bid offer. Don't wait for the submission deadline date. 
For any questions about the tender or the submission of a bid, please interact with the online discussions or send an email to tender@owwsc.nama.om.


Tender Status

S.NoTender NumberDescriptionEligibilityTender fee(RO) Non-RefundableStatusFloated DateLast Date of PurchaseBid Submission Date More Info.
1T/2702114/2025Consultancy Services for Assessment of Safe Yield of Main Well Fields – Batch 3Local Companies registered with Government Tender Board and International Companies specialized in the works mentionedRO 1500/-(Plus 5% VAT)Floated08-MAY-25 00:00:0005-JUN-25 15:00:0016-JUN-25 14:30:00
2T/2702111/2025Consultancy Services for Construction Supervision of a Pilot of Aquifer storage and recovery (ASR) scheme in Jaalan Well Field.Local Companies registered with Government Tender Board and International Companies specialized in the works mentionedRO 100/-(Plus 5% VAT)Floated08-MAY-25 00:00:0022-MAY-25 15:00:0016-JUN-25 14:00:00
3T/2702105/2025CALL OFF CONTRACT FOR SUPPLY AND DELIVERY OF HDPE PIPE FOR THREE YEARSLocal Companies registered with Government Tender Board and specialized in the works mentioned.RO 1500/-(Plus 5% VAT)Floated14-MAY-25 00:00:0022-MAY-25 15:00:0016-JUN-25 15:00:00
4T/2713103/2025Consultancy Services for Construction Supervision of Water Distribution Networks in Al Hazim Area in Al Rustaq Wilayat Zone one 1 & 2Local and international Companies registered with Government Tender Board and specialized in the works mentionedRO 500/-(Plus 5% VAT)Floated04-JUN-25 00:00:0016-JUN-25 15:00:0014-JUL-25 15:00:00
5T/2696103/2025Framework Consultancy Services for Concept Studies of Water and wastewater ProjectsLocal Companies registered with Government Tender Board and International Companies specialized in the works mentionedRO 2500/-(Plus 5% VAT)Floated24-APR-25 00:00:0022-MAY-25 15:00:0023-JUN-25 14:30:00
6T/2700105/20252 years contract for outsourced services at composting plantLocal Companies registered with Government Tender Board and specialized in the works mentionedRO 50/-(Plus 5% VAT)Floated11-MAY-25 00:00:0022-MAY-25 15:00:0016-JUN-25 14:00:00
7T/2700103/2025Asset Management System Implementation Tender (ISO 55001)Local Companies registered with Government Tender Board and international companies specialized in the works mentionedRO 50/-(Plus 5% VAT)Floated11-MAY-25 00:00:0022-MAY-25 15:00:0016-JUN-25 14:00:00
8T/2696095-2/2025Consultancy Services for Strengthening the NWS 5-Years Business Plan (2026-2030)Local Companies registered with Government Tender Board and specialized in the works mentionedRO 100/-(Plus 5% VAT)Floated04-JUN-25 00:00:0016-JUN-25 15:00:0014-JUL-25 14:30:00
9T/2696094/2025Call Off Contract for Supply of Laboratory Chemicals and consumables for Nama Water Services Laboratories for the wastewater for 3 years.Local Companies registered with Government Tender Board and specialized in the works mentionedRO 100/-(Plus 5% VAT)Floated23-APR-25 00:00:0001-MAY-25 15:00:0016-JUN-25 14:00:00
10T/2709103/2025Regional Asset Register Verification, Tagging and Valuation for Water and Wastewater AssetInternational and Local Companies registered with Government Tender Board in First Category and International Companies that have sufficient experiencRO 1500/-(Plus 5% VAT)Floated05-JUN-25 00:00:0016-JUN-25 15:00:0014-JUL-25 14:30:00
11T/2694094,1/2025Construction of Water Distribution Networks and House Connections in Al Rumail and Qasirah in Wadi Bani Khalid WilayatLocal Companies registered with Government Tender Board and specialized in the works mentionedRO 500/-(Plus 5% VAT)Floated15-APR-25 00:00:0015-APR-25 15:00:0026-MAY-25 14:00:00
12T/2699107/2025Construction of B3C Water, Sewer & TE Networks Systems Services in Al Khuwair Area 17/2Local Companies registered with Government Tender Board in Excellent Grade and International Companies specialized in the works mentionedRO 2500/-(Plus 5% VAT)Floated22-APR-25 00:00:0001-MAY-25 15:00:0016-JUN-25 13:00:00
13T/2699105/2025Construction of B3C Water, Sewer & TE Networks Systems Services in Al Khuwair Area 17/1Local Companies registered with Government Tender Board in Excellent Grade and International Companies specialized in the works mentionedRO 2500/-(Plus 5% VAT)Floated23-APR-25 00:00:0001-MAY-25 15:00:0019-JUN-25 15:00:00
14T/2699102/2025Construction of Water Distribution Networks in Al Hazim Area in Al Rustaq Wilayat Zone 1 & 2Local Companies registered with Government Tender Board and International Companies specialized in the works mentionRO 2500/-(Plus 5% VAT)Floated23-APR-25 00:00:0001-MAY-25 15:00:0019-JUN-25 15:00:00
15T/2601961-2/2025Design , Procure, Supply, Construction, Installation, Testing, Commissioning, 2 Years operation of Al Ashkhara STP (1000 cum/day average capacity) and associated works (EPCOM)Local Companies registered with Government Tender Board and specialized in the works mentionedRO 500/-(Plus 5% VAT)Floated25-MAY-25 00:00:0029-MAY-25 15:00:0016-JUN-25 13:10:28
16T/2707103/2025Supply, installation & commissioning of Lab Equipment's for NAMA water service LaboratoriesLocal Companies registered with Government Tender Board and specialized in the works mentionedRO 50/-(Plus 5% VAT)Floated22-MAY-25 00:00:0029-MAY-25 15:00:0016-JUN-25 14:20:00
17T/2698100/2025Renewal of Managed Services Contract for 5 YearsLocal Companies registered with Government Tender Board and specialized in the works mentionedRO 1500/-(Plus 5% VAT)Floated08-MAY-25 00:00:0022-MAY-25 15:00:0016-JUN-25 15:00:00
18T/2697102/2025Asset Criticality and Risk Mitigation Framework Consultancy Services to Study Assets/Sites Under Potential Critical Risk in Zones 1, 2 and 3Local Companies registered with Government Tender Board and International Companies specialized in the works mentioned.RO 2500/-(Plus 5% VAT)Floated08-MAY-25 00:00:0003-JUN-25 15:00:0016-JUN-25 14:30:00
19T/2703103/2025Price Agreement for Mechanical SEALS for Five YearsLocal Companies registered with Government Tender Board and International Companies specialized in the works mentionedRO 500/-(Plus 5% VAT)Floated04-JUN-25 00:00:0016-JUN-25 15:00:0007-JUL-25 14:30:00