Company Information

Officers

Directors (excluding those who are members of the Audit and Supervisory Committee)

Picture: Nomura Yoshikazu

Representative Director and Chairperson

NOMURA Yoshikazu

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Apr. 1971

Joined the Company

Dec. 2003

Director
Chief of Sewerage Engineering Headquarters and Sewerage Engineering East Headquarters

Dec. 2005

Managing Director
Chief of Sewerage Engineering Headquarters and Sewerage Engineering East Headquarters

Dec. 2007

Director and Vice President

Dec. 2009

Representative Director and President

Mar. 2019

Representative Director and Chairperson (current position)

Apr. 2020

Chairperson (Representative Director) of the Federation of Japanese Industry of Sewerage Service for Sustainable Society (current position)

Jul. 2020

Director of the Nissuicon Water Value-Up Foundation (currently Innovation Foundation for Water and Regional Revitalization) (current position)

Picture: Nakanishi Shinji

Representative Director and President

NAKANISHI Shinji

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Apr. 1985

Joined the Company

Apr. 2019

Corporate Officer
Manager of Water Supply Engineering Division

Mar. 2021

Director
Corporate Officer
Chief of Sales Division

Apr. 2021

Director
Corporate Officer
Chief of Business Development Headquarters and Manager of Eastern Region Supervisory Division

Apr. 2022

Director
Managing Corporate Officer
Chief of Business Development Headquarters and Manager of Eastern Region Supervisory Division

Apr. 2023

Director
Managing Corporate Officer
Chief of Business Development Headquarters

Jan. 2025

Director
Managing Corporate Officer
Executive Supervisory Coordinator of Business Development Headquarters

Mar. 2025

Representative Director and President (current position)

Jun. 2025

Chairperson of the Association Of Water And Sewage Works Consultants Japan (current position)

Picture: Koishikawa Nobuaki

Director

KOISHIKAWA Nobuaki

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Apr. 1974

Joined the Company

Dec. 2005

Director
Chief of Sewerage Engineering West Headquarters

Dec. 2009

Managing Director
Corporate Officer
Chief of Business Management Headquarters

Dec. 2013

Director
Senior Managing Corporate Officer
Chief of General Affairs Headquarters

Mar. 2015

Representative Director and Vice President
Corporate Officer
Chief of Administration Headquarters

Mar. 2019

Executive Corporate Advisor

Mar. 2021

Director
Senior Managing Corporate Officer
Chief of Administration Headquarters

Apr. 2021

Director
Senior Managing Corporate Officer
Chief of Corporate Headquarters

Apr. 2023

Director
Senior Managing Corporate Officer
Chief of Corporate Headquarters and Manager of Internal Control Division (current position)

Picture: TANEICHI Naohito

Director

TANEICHI Naohito

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Apr. 1986

Joined the Company

Apr. 2015

Corporate Officer
Manager of Sewerage Engineering Division

Apr. 2018

Corporate Officer
Manager of Sewerage Engineering Division and Business Planning Department, Business Management Headquarters

Apr. 2019

Corporate Advisor of Sewerage Engineering Division

Apr. 2023

Managing Director and Corporate Officer
Chief of Consulting Headquarters

Mar. 2025

Director
Managing Director and Corporate Officer
Chief of Consulting Headquarters (current position)

Picture: Ogawa Kenichi

Outside Director

OGAWA Kenichi

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Apr. 1977

Joined the Tokyo Metropolitan Government

Jul. 2012

Director General of the Bureau of Waterworks

Sep. 2013

Representative Director and President of Tokyo Metropolitan Sewerage Service Corporation

Jun. 2017

Chairperson of the Japan Pipe Rehabilitation Quality Assurance Association

May 2018

President of Sewage Works Maintenance Cooperation

Mar. 2023

Outside Director of the Company (current position)

Jun. 2025

Executive Advisor of S・P・R・RENTAL CORPORATION (current position)

Directors Constituting Members of Audit and Supervisory Committee

Picture: Haru Koichiro

Director
Audit and Supervisory Committee Member

HARU Koichiro

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Apr. 1984

Joined Central Consultant Inc.

Jan. 1994

Joined the Company

Dec. 2011

Corporate Officer
Chief of Sewerage Engineering Headquarters and Eastern Region Sewerage Engineering Division

Apr. 2012

Corporate Officer
Manager of Sewerage Engineering Division

Dec. 2013

Director
Managing Corporate Officer
Chief of Business Management Division

Mar. 2019

Director
Managing Corporate Officer
Chief of Administration Headquarters

Mar. 2021

Corporate Auditor

Sep. 2021

Corporate Auditor of PT.DACREA Design And Engineering Consultants (current position)

Mar. 2022

Corporate Auditor of NSC TEC Co., Ltd. (current position)

Mar. 2022

Corporate Auditor of Sabo Engineering Co., Ltd. (current position)

Mar. 2023

Director
Audit and Supervisory Committee Member of the Company (current position)

Picture: Takata Hirohisa

Outside Director
Audit and Supervisory Committee Member

TAKATA Hirohisa

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Apr. 1985

Joined Japan Development Bank (currently Development Bank of Japan Inc.)

Jun. 2012

General Manager of Corporate Auditor’s Office, Development Bank of Japan Inc.

Jul. 2019

Registered as a certified public accountant

Nov. 2022

Opened Hirohisa Takata Certified Public Accountant Office (current position)

Dec. 2022

Registered as a tax accountant

Mar. 2023

Outside Director
Audit and Supervisory Committee Member of the Company (current position)

May 2023

Standing Audit and Supervisory Board Member of PR TIMES Corporation. (current position)

Picture: Matsuda Yuki

Outside Director
Audit and Supervisory Committee Member

MATSUDA Yuki

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Apr. 2004

Joined the Legal Training and Research Institute of Japan

Oct. 2005

Registered as an attorney-at-law

Jan. 2016

Joined Sunrise Law Office (current position)

Mar. 2017

Outside Director of Nippon Aqua Co., Ltd.

May 2017

Outside Director of Azplanning Co., Ltd.

Feb. 2021

Deputy Secretary General of Japan Federation of Bar Associations

May 2022

Outside Director
Audit and Supervisory Committee Member of Azplanning Co., Ltd.

Mar. 2023

Outside Director
Audit and Supervisory Committee Member of the Company (current position)

Mar. 2023

Outside Director
Audit and Supervisory Committee Member of Nippon Aqua Co., Ltd. (current position)

Dec. 2024

Outside Director
Audit and Supervisory Committee Member of TEMONA. Inc. (current position)

Corporate Officers

Senior Managing Director and Corporate Officer
Chief of Corporate Headquarters
Manager of Internal Control Division

KOISHIKAWA Nobuaki

Managing Director and Corporate Officer
Chief of Infrastructure Management Headquarters
Head of Central Research Institute
person responsible for the management of construction work in accordance with the Construction Business Act

NOMURA Kyogo

Managing Director and Corporate Officer
Chief of Consulting Headquarters

TANEICHI Naohito

Managing Director and Corporate Officer
Chief of Business Development Headquarters
Manager of Western Region Supervisory Division

KONNO Kazuhiro

Corporate Officer
Deputy Chief of Corporate Headquarters
Manager of Corporate Planning Department

SUGI Michio

Corporate Officer
Deputy Chief of Corporate Headquarters
Manager of Finance and Accounting Department

SAKAI Kazuyuki

Corporate Officer
Deputy Chief of Corporate Headquarters
Manager of Information Technology Planning Department

SATO Shinichi

Corporate Officer
Manager of Eastern Region Supervisory Division, Business Development Headquarters
Manager of Tokyo Branch

YOSHINARI Daigo

Corporate Officer
Manager of Overseas Supervisory Division, Business Development Headquarters

DOMICHI Masaharu

Corporate Officer
Manager of Incubation Division, Infrastructure Management Headquarters

FUKUHARA Masaru

Corporate Officer
Manager of Digital Transformation Innovation Division, Infrastructure Management Headquarters
Manager of Solution Development Department

GOTO Mitsuhiko

Corporate Officer
Deputy Chief of Consulting Headquarters

KINKAI Hideki

Corporate Officer
Manager of Water Supply Engineering Division, Consulting Headquarters

MIYAMOTO Katsutoshi

Corporate Officer
Manager of Sewerage Engineering Division, Consulting Headquarters

MORINAGA Koji

Corporate Officer
Manager of River Basin Water Management Division, Consulting Headquarters

YAMAMOTO Seiji

Corporate Officer
Manager of Architectural Engineering Division, Consulting Headquarters

MASUDA Tamon

Corporate Officer
Manager of Mechanical and Electrical Engineering Division, Consulting Headquarters

IKEDA Kenji

Corporate Officer
Manager of Overseas Division, Consulting Headquarters

AKASAKA Kazutoshi