- Mar. 04, 2026
- Public Relations
Nihon Suido Consultants Receives Order for Regional Water Public-Private Partnership (Water PPP) Project
(Comprehensive Public Sewerage Facility Maintenance and Management Services for the City of Osakasayama [Phase 3] and Comprehensive Sewerage Facility Management Services for the City of Kawachinagano)
Company to participate in a regional water PPP in cooperation with two municipalities, integrating comprehensive management of maintenance and updates
Nihon Suido Consultants Co., Ltd. (Head Office: Shinjuku-ku, Tokyo; Representative Director and President: NAKANISHI Shinji) is pleased to announce that the Minami-Osaka Regional Sewerage Service Joint Venture, of which it is a member, concluded a contract on February 19 with the City of Osakasayama and the City of Kawachinagano, both in Osaka Prefecture. Through the contracted project, the joint venture will provide comprehensive public sewerage facility maintenance and management services to Osakasayama (Phase 3) and comprehensive sewerage facility management services to Kawachinagano. The project will commence on April 1, 2026.
Purpose of the project
The project is structured as a water public-private partnership (“water PPP”), under which maintenance and renewal of facilities are managed in an integrated manner. As a comprehensive public-private partnership initiative jointly implemented by two municipalities, the project will, over the next 10 years, orchestrate appropriate maintenance and management of sewer pipelines and sewerage facilities under the jurisdiction of both cities. In addition, it will implement, in an integrated manner, tasks such as revisions to the sewerage stock management plan and the comprehensive seismic countermeasure plan as well as the necessary investigations, detailed design, and rehabilitation work. These initiatives aim to achieve the following benefits:
- Greater efficiency in facility maintenance and rehabilitation
- Improved efficiency through collaboration between the two municipalities
- Standardization of required service levels for both municipalities through mechanisms such as profit sharing
Furthermore, the project, which is being ordered jointly by the two municipalities, is the first case of a regional water PPP promoted by the national government.*
*Source: “List of Implementation/Consideration Status of Water PPP Projects (as of February 6, 2026)” (Ministry of Land, Infrastructure, Transport and Tourism of Japan)
Project overview
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Name |
Comprehensive Public Sewerage Facility Maintenance and Management Services for the City of Osakasayama (Phase 3) and Comprehensive Sewerage Facility Management Services for the City of Kawachinagano |
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Scope of service |
◆Comprehensive Public Sewerage Facility Maintenance and Management Services for the City of Osakasayama (Phase 3) The project, which targets all sewerage facilities under the jurisdiction of the City of Osakasayama, includes integrated management services, routine maintenance, planned maintenance, pump station and manhole pump maintenance, planning services, detailed design and rehabilitation work, and other related services. ◆Comprehensive Sewerage Facility Management Services for the City of Kawachinagano The project, which targets all sewer pipelines and sewerage facilities under the jurisdiction of the City of Kawachinagano, includes integrated management services, revisions to sewerage business plans, routine maintenance for pipeline facilities, planned maintenance for pipeline facilities, pipeline surveys required for planning, detailed design for pipeline facilities, rehabilitation work for pipeline facilities, installation of public wastewater connections and related approval surveys, facility maintenance, routine maintenance for sewerage facilities, operation management services, planned maintenance for sewerage facilities, and detailed design and construction work for sewerage facilities. |
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Dates |
April 1, 2026, to March 31, 2036 |
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Contract date |
February 19, 2026 |
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Consortium members |
FUJINO KOUGYO Co., Ltd. (lead company); Nihon Suido Consultants Co., Ltd. (Osaka Branch); SEKISUI CHEMICAL CO., LTD.; KANSEI Company (Osaka Branch); Clearwater OSAKA Corporation; NIPPON INSIEK CO., LTD.; Kankyo Co., Ltd.; ISHIGAKI MAINTENANCE CO., LTD. (Osaka Branch) |
Role of Nihon Suido Consultants
As a member of the Minami-Osaka Regional Sewerage Service Joint Venture, Nihon Suido Consultants will be responsible for revisions to the sewerage business plans for the city of Kawachinagano and for detailed design services related to both pipeline facilities and sewerage facilities.
Joint contract signing ceremony
We will continue to leverage the experience and expertise we have accumulated to date and look forward to helping build a prosperous and sustainable future society through these sewerage projects for the cities of Osakasayama and Kawachinagano.