Nama Water Services (NWS), part of the Nama Group, has launched a public-private partnership (PPP) tender inviting local, regional, and international consortia to submit applications for the Request for Qualification (RFQ) for two major sewage treatment plant (STP) projects.
The projects include the development and long-term operation of Al Ansab STP (Phase III) and Al Amerat STP (Phase II). The scope encompasses capacity expansion as well as the operation and maintenance of both new facilities and existing assets.
The Al Ansab STP is set for an expansion of approximately 82,000 cubic metres per day, increasing its total capacity from 125,000 to 207,000 cubic metres per day. The Al Amerat STP will expand by around 36,000 cubic metres per day, raising its capacity from 18,000 to 54,000 cubic metres per day. Combined, the two projects represent a significant enhancement of wastewater treatment capacity to meet rising demand across Oman.
The tender follows a Build-Own-Operate-Transfer (BOOT) model, under which the selected private partner will take responsibility for the entire lifecycle of the new infrastructure—including design, financing, procurement, operation, and maintenance—as well as the long-term operation of existing facilities. The BOOT model, widely used in international large-scale infrastructure projects, shifts construction and operational responsibilities to the private sector over an extended contract period.
NWS emphasized that this procurement aligns with the Sultanate of Oman’s Vision 2040, supporting the government’s goal of increasing private sector involvement in essential infrastructure. The initiative is seen as a key step in strengthening Oman’s water infrastructure, enhancing operational performance, and ensuring sustainable wastewater management across the country.
Interested developers, operators, and consortia must register to obtain the official RFQ documents. The tender reflects a growing pipeline of investment opportunities within Oman’s utility sector and positions the Sultanate as a hub for advanced, privately partnered water infrastructure projects.