Establishing a Three (03) Year Contract for the Provision of Operation and Maintenance Services for Water and Wastewater Infrastructure at Various UNMISS Locations in the Republic of South Sudan
Issued by UN Secretariat · via UNGM — UN Global Marketplace
- Published
- 10 Sept 2026
- Closes
- 1 Oct 2026
- Reference
- EOIUNMISS24694
- Location
- South Sudan
- Sector
- Water & Environment
Details
The United Nations Mission in South Sudan (UNMISS) hereby solicits Expressions of Interest (EOI) from competent companies for the provision of operation and maintenance services for water and wastewater infrastructure at various UNMISS locations in the Republic of South Sudan.
Specific Requirements/Information 1. Interested companies are invited to submit their Expression of Interest (EOI) online or via e-mail (preferred) or hand delivered to UNMISS. The EOI must include, at a minimum, the following information: > United Nations Global Market (UNGM) and registration number for operation and maintenance services for water and wastewater infrastructure, UNSPSC Code no 83101500. > Company’s contact details (address, telephone and fax numbers, e-mail, etc.).
Important Notice:
2. This REOI does not constitute a solicitation. UNMISS reserves the right to change or cancel the requirement at any time during the REOI and/or solicitation process. Thus, submitting a response to this REOI does not automatically guarantee that your company will be considered for receipt of the solicitation when issued. 3. UNMISS also reserves the right to send the Solicitation Documents to companies who were identified through additional market research or other means to source the UN requirements. 4. Vendors interested in fulfilling the requirement described above must be registered with UNGM and those not registered may wish to visit www.ungm.org for full registration information in order to be eligible to participate in any solicitation. 5. Vendors already registered at the UNGM basic level and level 1 are strongly advised to upgrade to Level 2. 6. Local and Regional companies, women owned business, and businesses by people living with disabilities are encouraged to participate. 7. The EOI, clearly marked “Expression of Interest – Provision of Operation and Maintenance Services for Water and Wastewater Infrastructure at Various UNMISS Locations in the Republic of South Sudan” must be received by UNMISS no later than 16:00 Hours (GMT+2) on Thursday 01 October 2026 via the link https://www.ungm.org/Public/Notice.
Context for bidders
We hold 153 notices from UN Secretariat, going back to January 2026 — 46 of them still open. They buy mostly in Construction & Infrastructure, IT & Telecom and Transport & Logistics. There are 2 open Water & Environment tenders in South Sudan. This one closes in 20 days.
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Before you bid on this tender
A quick checklist to help you decide whether to bid and prepare a compliant submission for this water & environment opportunity. Always verify the details on the official source.
- Confirm the exact closing date and time (and time zone) on the official portal — deadlines are strict and can be revised by a corrigendum.
- Read the full notice and every attached document, including the scope, specifications and any bill of quantities or terms of reference.
- Check the eligibility criteria — prior similar experience, annual turnover, certifications and registrations — and make sure you qualify before investing effort.
- Prepare any earnest-money deposit (EMD) or bid security and the required formats early; missing or wrongly-formatted documents are a common cause of rejection.
- Note how bids must be submitted (online or physical), in what format, and whether a digital signature or portal registration is required.
- Watch for corrigenda and clarifications right up to the deadline — requirements and dates can change.
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