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.


➤ Click here for "Pre-Qualification Notice"

Tender Status

S.NoTender NumberDescriptionEligibilityTender fee(RO) Non-RefundableStatusFloated DateLast Date of PurchaseBid Submission Date More Info.
1T/2777183/2026Supply and Delivery of Emergency Mobile Diesel GeneratorsLocal Companies registered with Government Tender Board and International Companies specialized in the works mentionedRO 500/-(Plus 5% VAT)Floated28-APR-26 00:00:0005-MAY-26 15:00:0005-JUL-26 15:00:00
2T/2737165-2/2026Supply, Delivery and Installation of Automated Stationary Water Meters Test BenchInternational & Local Companies registered with Government Tender Board and have sufficient experience in the work mentionedRO 250/-(Plus 5% VAT)Floated03-JUN-26 00:00:0018-JUN-26 15:00:0016-JUL-26 14:00:00
3T/2766178/2026Renewal of CC&B support contract - One yearLocal Companies Registered with Projects, Tenders and Local Content Authority Specialized in the Works MentionedRO 100/-(Plus 5% VAT)Floated06-APR-26 00:00:0011-APR-26 15:00:0001-MAY-26 00:03:54
4T/2742169-2/2026Design, Supply, Installation, and commissioning of Sludge Dewatering Control Panel at Ansab STPLocal Companies registered with Projects, Tenders and Local Content Authority Specialized in the works mentionedRO 100/-(Plus 5% VAT)Floated05-APR-26 00:00:0016-APR-26 15:00:0013-JUL-26 14:00:00
5T/OW/T/10033/2026/2026Consultancy Services for Supervision for Water Distribution Network Al Kamil waLocal Companies registered with Government Tender Board and International Companies specialized in the works mentionedRO 500/-(Plus 5% VAT)Floated08-JUL-26 10:40:0316-JUL-26 15:00:0028-SEP-26 11:00:00
6T/OW/T/10034/2026/2026Consultancy services for construction supervision of Water Distribution Networks Local Companies registered with Projects, Tenders and Local Content Authority in Excellent Grade and International Companies specialized in the workRO 1000/-(Plus 5% VAT)Floated08-JUL-26 10:45:0216-JUL-26 15:00:0028-SEP-26 11:00:00
7T/OWW/T/10044/2026/2026Construction of Treated Effluent Transmission Pipeline from Seeb to BarkaLocal Companies registered with Government Tender Board and International Companies specialized in the works mentionedRO 500/-(Plus 5% VAT)Floated19-AUG-26 10:54:1227-AUG-26 15:00:0021-SEP-26 14:00:00
8T/OW/T/10031/2026/2026Consultancy services for construction supervision of water distribution networkLocal Companies registered with Government Tender Board and International Companies specialized in the works mentionedRO 500/-(Plus 5% VAT)Floated05-JUL-26 11:18:1822-JUL-26 15:00:0021-SEP-26 11:00:00
9T/OW/T/10029/2026/2026Consultancy Services for Supervision of Water Distribution Network in Amerat Ph3 Local Companies registered with Projects, Tenders and Local Content Authority in Excellent Grade and International Companies specialized in the workRO 1000/-(Plus 5% VAT)Floated05-JUL-26 11:18:1616-JUL-26 15:00:0021-SEP-26 13:00:00
10T/OWW/T/10047/2026,1/2026Decentralized Sewage Treatment Plants Local Companies registered with Projects, Tenders and Local Content Authority in Excellent Grade and International Companies specialized in the workRO 1000/-(Plus 5% VAT)Floated23-AUG-26 09:53:0606-SEP-26 15:00:0021-SEP-26 10:19:00
11T/OWW/T/10048/2026,1/2026Design and Construction of Al Musannah TE Line. Local Companies registered with Projects, Tenders and Local Content Authority in Excellent Grade and International Companies specialized in the workRO 100/-(Plus 5% VAT)Floated23-AUG-26 09:53:4327-AUG-26 15:00:0021-SEP-26 11:00:00
12T/OW/T/10054/2026/2026Call off Contract for Supply & Delivery of PPE’s to OWWSC Warehouse for five YeaLocal Companies registered with Projects, Tenders and Local Content Authority , licensed for Project Management Services and International Companies sRO 100/-(Plus 5% VAT)Floated13-AUG-26 09:42:2027-AUG-26 15:00:0021-SEP-26 10:00:00
13T/OWW/T/10016/2026/2026Design, Supply, Installation, Testing and Commissioning of the OCU with all acceLocal Companies registered with Government Tender Board and International Companies specialized in the works mentionedRO 100/-(Plus 5% VAT)Floated08-JUL-26 10:40:0516-JUL-26 15:00:0021-SEP-26 11:00:00
14T/OWW/T/10041/2026/2026ENGINEERING, PROCUREMENT AND CONSTRUCTION (EPC) OF TWIN RISING MAINS FROM CENTRALocal Companies registered with Government Tender Board and International Companies specialized in the works mentionedRO 1000/-(Plus 5% VAT)Floated23-JUL-26 06:34:4306-AUG-26 15:00:0005-OCT-26 14:00:00
15T/OW/T/10001/2026,3/2026Construction of Water Distribution Networks Local Companies registered with Projects, Tenders and Local Content Authority in Excellent Grade and International Companies specialized in the workRO 1000/-(Plus 5% VAT)Floated10-JUN-26 06:43:2911-JUN-26 15:00:0021-SEP-26 11:00:00
16T/OW/T/10016/2026/2026Supply, Installation and Testing of Internal Lining System in Barka Reservoirs (Local Companies registered with Government Tender Board and International Companies specialized in the works mentionedRO 1000/-(Plus 5% VAT)Floated06-JUL-26 07:29:0314-JUL-26 15:00:0028-SEP-26 10:30:00
17T/OW/T/10002/2026,1/2026Construction of Water Distribution Networks in the Wilayat Local Companies registered with Projects, Tenders and Local Content Authority in Excellent Grade and International Companies specialized in the workRO 1000/-(Plus 5% VAT)Floated04-JUN-26 10:33:2811-JUN-26 15:00:0017-SEP-26 11:00:00
18T/OW/T/10003/2026,3/2026Construction of Water Distribution Networks Local Companies registered with Projects, Tenders and Local Content Authority in Excellent Grade and International Companies specialized in the workRO 1000/-(Plus 5% VAT)Floated04-JUN-26 10:29:2511-JUN-26 15:00:0028-SEP-26 10:00:00
19T/OW/T/10005/2026,2/2026Construction of Water Distribution Networks i Local Companies registered with Projects, Tenders and Local Content Authority in Excellent Grade and International Companies specialized in the workRO 1000/-(Plus 5% VAT)Floated04-JUN-26 09:23:3711-JUN-26 15:00:0028-SEP-26 14:00:08
20T/OW/T/10004/2026,2/2026Construction of Water Distribution Networks - Al Nahdah Local Companies registered with Projects, Tenders and Local Content Authority in Excellent Grade and International Companies specialized in the workRO 1000/-(Plus 5% VAT)Floated04-JUN-26 09:23:3911-JUN-26 15:00:0001-OCT-26 10:30:00
21T/OW/T/10009/2026/2026BUILD OWN OPERATE DESALINATION PLANT IN MASIRAH NEW TENDER PROPOSAL Local Companies registered with Projects, Tenders and Local Content Authority in Excellent Grade and International Companies specialized in the workRO 1000/-(Plus 5% VAT)Floated09-JUL-26 08:01:5316-JUL-26 15:00:0005-OCT-26 14:00:00
22T/OW/T/10058/2026/2026Consultancy Services for Price Control Review 3 (PCR3)Local Companies registered with Projects, Tenders and Local Content Authority , licensed for Project Management Services and International Companies sRO 50/-(Plus 5% VAT)Floated16-AUG-26 09:02:4908-SEP-26 15:00:0021-SEP-26 10:00:00