Japan Sewage Corporation

The training center was established in 1972, at the same time as the founding of the Sewage Works Center, the predecessor of JS.

The Sewerage Business Center (predecessor of the Japan Sewerage Corporation) was established through joint investment by the national government and local public bodies, and was set up as a pool institution for sewerage engineers to address the shortage of sewerage engineers. Technical assistance was carried out as the main activity, and training and examination research were conducted with operating subsidies from the national government and local public bodies.

Since it began operation in April Showa 50, the facility has become heavily aged, and there are no technical staff.

Implemented the Sewage Sludge Wide-area Treatment Project (ACE Project) utilizing financial investment and loan funds starting from fiscal year 1986.

In fiscal 1985, approval was obtained for the project as the Yawara Village Public Sewerage Project, covering the Kokinu area, and the project began.

Venue of the International Horticultural Exposition (International Flower and Green Expo) held in 1990.

In fiscal 1993, a development plan for areas along the TX line was formulated.

This center was established in Moka City, Tochigi Prefecture, in June 2001 (Table 1).

Opening date: June 2001

The Special Corporate and Others Rationalization Plan, decided by the Cabinet on December 19, 2001, is as follows.

Expanded support services based on the amended Japan Sewerage Corporation Act enacted in July 2015.

In January Heisei 17, the city of Yamakashi and the towns of Kakakita, Kikushika, Kakamoto, and Kakuō merged to form a new municipality.

Following the merger of the former Ina Town and former Yawara Village in March 2006 to form Tsukubamirai City, the project is now being carried out as the Tsukubamirai City Public Sewerage Project, covering a planned service area of 1,380 hectares and served by one treatment plant (Kokinu Water Treatment Center).

Completion date: March 2010

Since fiscal year Heisei 23, we have been operating the "New Technology Introduction System".

In the Imabo drainage district, which suffered flood damage during the July 2018 heavy rains, we commissioned JS to develop stormwater pumping stations of a scale capable of largely eliminating above-floor flooding in rainfall events comparable to the July 2018 heavy rains, using the Sewerage Above-Floor Flooding Mitigation Project. Pumping stations have been constructed at two locations, Imabo and Shiraishi.

Added overseas technical assistance services based on the amended Japan Sewerage Corporation Act enacted in August 2018.

The Chugoku-Shikoku General Office was established in Okayama City after separating from the Kinki-Chugoku General Office in April Reiwa 1.

A new “experimental building” was established in FY2020.

The Chugoku-Shikoku General Office was established in Okayama City after separating from the Kinki-Chugoku General Office in April Reiwa 1.

Completion date: December 2020

The overall plan was reviewed in fiscal 2021. The system currently operates one process line using the conventional activated sludge method, and construction has begun to add a second process line.

Since January 2021, this plant has been operated continuously using post-sedimentation water from the Moka City Water Treatment Center as its raw water.

Completion date: March 2021

Based on the 6th Medium-Term Management Plan that began in fiscal year 2022.

The administration building of the Asahinishi Drainage Center was rebuilt and completed in FY2022.

By the end of FY2023, just five years after the disaster, the drainage pumps could be put into operation, and

The Basic Human Resource Development Policy established in March 2023.

The Reiwa 6 fiscal year was the third year of the 6th Medium-Term Management Plan (2022–2026).

During the Reiwa 6 Noto Peninsula earthquake, we conducted damage assessments for 8 organizations and 36 facilities that requested assistance.

As of the end of fiscal year 2024, the total number of training participants reached 91,121.

During the Reiwa 6 Noto Peninsula earthquake, we conducted damage assessments for 8 organizations and 36 facilities that requested assistance, and provided recovery support to 7 organizations and 19 facilities.

The "Practical Design Course Pipe Design II" hosted by the Local Joint Corporation Japan Sewage Works Association was held in fiscal year Reiwa 6.

By the end of FY2024, the pumping station was completed with the completion of the in-house power generation building.

To improve drainage capacity in the Tsushima drainage district, a new pumping station will be added on the site of the Mannari Pumping Station. This project will proceed in parallel with the reconstruction, renewal, and seismic retrofitting of the Mannari Pumping Station. Detailed design began in FY2024, and the project is set to move forward.

The Okayama City Reconstruction Basic Concept was reviewed in FY2024, and efforts are being made to promote planned sewerage projects by drawing on JS's expertise.

From FY2024, JS Technology Development Experimental Center...

First, the "Downsizing-type Belt Press Dewatering Machine" jointly developed by your company and JS was recognized at the 50th Annual Excellent Environmental Equipment Awards hosted by the Japan Industrial Machinery Association in March of this year.

The drainage function for Phase 1 (construction work, water treatment equipment work, and electrical equipment work) was secured in March 2024.

At the June board meeting of the Japan Sewage Works Association, the financial results for the Reiwa 6 fiscal year were reported and approved.

June 2024

During the heavy rain disaster that occurred in July of the same year, we provided disaster recovery support to one organization and two facilities.

Usage record: 68 cases (as of July 2024)

Future Sewerage Workshop

Future Sewerage Workshop

During the period from the start of operations through December 2024

Various urban infrastructure facilities, including sewerage facilities, were developed through an agreement signed between the Japan Sewerage Corporation and this city.

Construction of the Wakamatsu Pumping Station is scheduled to begin in FY2025, with work proceeding toward an early start of operations.

Since the beginning of 2025

The emergency on-site power generation equipment was completed in March 2025 as part of Phase 2 (construction work, Part 2, and electrical equipment work, Part 2).

Section 1 (approximately 3.7 km long, with an internal diameter of φ3,750 mm) was completed in March 2025, and a completion event was held (Figures 13, 14, and 15).

It was selected as a Category I new technology on March 28, Reiwa 7.

A loan support system for disaster countermeasure sewerage equipment was newly launched in April 2025.

JS has newly started the "Disaster-Resistant Sewage Equipment Loan Support System" in April of Reiwa 7, which provides disaster-resistant sewage equipment to local governments.

With the introduction of a new dewatering and drying facility (20% moisture content), the total amount of dried sludge will be about half. Starting in April Reiwa 7, we began accepting urine and activated sludge from treatment tanks, expecting an annual dried sludge volume of 500–600 tons.

This April, I was appointed as a director responsible for training, international strategy, and Eastern Japan at the Japan Sewage Works Agency (JS).

The Osaka and Kansai Expo took place from April 13 to October 13, 2025, for 184 days.

A completion ceremony for this project was held at both pumping stations on May 20, 2025.

Application period: June 2025 to May 2026

(Effective June 30, 2025) Personnel Changes | Name | Current Position (Title) Suizu Hidenori | Resigned (term expired) | Auditor Uchisasai Toru | Retired | Senior Executive Advisor Ishizaki Takahiro | Retired (Ministry of Land, Infrastructure, Transport and Tourism) | Director General, Business Management Department Yoshida Toshiaki | Retired (Ministry of Land, Infrastructure, Transport and Tourism) | Director, Kanto and Hokuriku Regional Office; concurrently Deputy Director, Eastern Japan Headquarters

(Effective July 1, 2025) Personnel Changes | Name | Current Position (Title) Uchisasai Toru | Auditor (newly appointed) Yamada Satoshi | Deputy Director, Management Planning Department; concurrently Manager, Management Planning Section, Management Planning Department; concurrently Professor, Training Center Hired: Nishi Shu | Director General, Business Management Department | Ministry of Land, Infrastructure, Transport and Tourism Kono Miyabu | Senior Research Officer, Business Management Department | Senior Research Officer, Business Management Department (seconded to the Japan Sewage Works Support Center, a general incorporated foundation) Yonezawa Keita | Manager, Technical Supervision Section, Business Management Department | Professor, Training Center Nakasuj i Yasuyuki | Director General, DX Strategy Department | Director, Kinki Regional Office; concurrently Deputy Director, Western Japan Headquarters Jingu Makoto | Director, Kanto and Hokuriku Regional Office | Director, Chugoku and Shikoku Regional Office; concurrently Deputy Director, Eastern Japan Headquarters

(Effective July 1, 2025) Personnel Changes | Name | Current Position (Title) Uchisasai Toru | Auditor (newly appointed) Yamada Satoshi | Deputy Director, Management Planning Department; concurrently Manager, Management Planning Section, Management Planning Department; concurrently Professor, Training Center Hired: Nishi Shu | Director General, Business Management Department | Ministry of Land, Infrastructure, Transport and Tourism Kono Miyabu | Senior Research Officer, Business Management Department | Senior Research Officer, Business Management Department (seconded to the Japan Sewage Works Support Center, a general incorporated foundation) Yonezawa Keita | Manager, Technical Supervision Section, Business Management Department | Professor, Training Center Nakasuj i Yasuyuki | Director General, DX Strategy Department | Director, Kinki Regional Office; concurrently Deputy Director, Western Japan Headquarters Jingu Makoto | Director, Kanto and Hokuriku Regional Office | Director, Chugoku and Shikoku Regional Office; concurrently Deputy Director, Eastern Japan Headquarters Hired: Iwasaki Hirokazu | Director, Kinki Regional Office; concurrently Deputy Director, Western Japan Headquarters | Ministry of Land, Infrastructure, Transport and Tourism Wakao Masamitsu | Director, Chugoku and Shikoku Regional Office | Deputy Director, Business Management Department; concurrently Manager, Technical Supervision Section, Business Management Department

The Osaka City Construction Bureau exhibited at the event space (Gallery EAST) within the Expo venue.

The Osaka City Construction Bureau exhibited at the event space (Gallery EAST) within the Expo venue.

From July 29 to August 1, the "Sewage Exhibition '25" will be held at Interex Osaka, with the Osaka City Sewage Science Museum as a satellite venue.

This year's Sewerage Works Exhibition was held at INTEX Osaka from Tuesday, July 29, to Friday, August 1, 2025. The Japan Sewage Works Agency (JS) also exhibited.

Retired upon expiration of term: Board Director Keiichi Hara (in charge of management planning)

Retired upon expiration of term: Board Director Yoshinobu Nakahira (in charge of business management and solution promotion)

Retired upon expiration of term: Board Director (part-time) Kentaro Motomura (Mayor of Sagamihara)

Board Director (in charge of management planning): Hideki Nishimura (newly appointed)

Board Director: Shuji Tsuneyama (newly appointed) (in charge of business management and solution promotion)

Board Director (part-time): Norihiko Fukuda (newly appointed) (Mayor of Kawasaki)

Board Director (in charge of management planning) Hideki Nishimura (newly appointed); Board Director (in charge of business management and solution promotion) Shuji Tsuneyama (newly appointed); Board Director (part-time) Norihiko Fukuda (newly appointed) (Mayor of Kawasaki)

Examination Date: Sunday, November 9, 2025 Class 1 Technical Examination: 9:00 a.m. to 4:00 p.m. Class 2 Technical Examination: 9:00 a.m. to 12:15 p.m. Class 3 Technical Examination: 1:15 p.m. to 4:30 p.m. Certification Examination (Pipeline Facilities): 9:00 a.m. to 11:45 a.m. Examination Locations: 10 cities—Sapporo, Sendai, Tokyo, Niigata, Nagoya, Osaka, Hiroshima, Takamatsu, Fukuoka, and Naha

Date results are announced: Class 2 and Class 3 Technical Examinations and Certification Examination (Pipeline Facilities) — Wednesday, December 17, 2025

From FY2026 onward, a policy turning point is anticipated, including a shift toward reconstruction and renewal projects in light of the road collapse in Yashio City.

Date results are announced: Class 1 Technical Examination — Wednesday, February 4, 2026

March 2027

Details of the work to be carried out in fiscal 2026 are scheduled to be announced in the Official Gazette and on the JS website around late April 2026.