Company Profile and Organization Chart

Company Profile

Organization Chart

Company Profile

Company Name	Nihon Suido Consultants Co., Ltd.
Head Office	Shinjuku Square Tower, 6-22-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo 163-1122, Japan TEL. +81-3-5323-6200 (Main line) FAX. +81-3-5323-6480
Date of Establishment	May 25, 1959
Share Capital	100 million yen
Number of Employees	Consolidated : 715 Non-Consolidated : 655 (as of December 31, 2024)
Bank Account	Sumitomo Mitsui Banking Corporation; Mizuho Bank, Ltd.; MUFG Bank, Ltd.; Resona Bank, Limited; and Sumitomo Mitsui Trust Bank, Limited
Business Content	Arrangement, investigation, research, planning, design, construction supervision, facility operation, management, diagnosis, water quality inspection, economic and financial analysis and other consulting related to the following businesses in Japan and overseas Water supply, sewerage, and industrial water supply Flood control, water utilization, and environmental management of rivers, lakes, marshes and coastal waters Treatment of industrial wastewater and waste, etc. Architecture, urban and regional development Agricultural development Renewable energy-related Related to the preceding items Development, sales, rental, operation and maintenance of information processing systems Temporary staffing Contracting, construction and supervision of architectural, civil engineering and various plant works Procurement, sale, lease and rental of materials and equipment related to each of the preceding items, and sale and lease of old articles related to these items Any and all business incidental or related to the preceding items
Permit/Registration	Construction consultant registration (Rivers, erosion control, coastal and marine sector; water supply and industrial water supply sector; sewerage sector; agricultural civil engineering sector; waste sector; urban and regional planning sector; soils and foundations sector; steel structure and concrete sector; tunnels sector; construction planning, construction equipment and cost estimation sector; construction environment sector; machinery sector; and electrical and electronics sector) Registered as a first-class architect office (Hokkaido, Tokyo, Kanagawa, Aichi, Osaka, and Fukuoka) Registered as a survey company Registered as a geological survey contractor Registered as a sewerage treatment facility maintenance and management contractor
ISO Certification and Registration	Quality Management System [ISO 9001:2015＋Amd 1:2024 ･ JIS Q 9001:2025] Environmental Management System [ISO 14001:2015＋Amd 1:2024 ･ JIS Q 14001:2025] Information Security Management System [ISO/IEC 27001:2022＋Amd 1:2024 ･ JIS Q 27001:2025] Asset Management System [ISO 55001:2014 ･ JIS Q 55001:2017] *Integrated operation of the above
Research Institutions	Central Research Institute
Domestic Branches	Hokkaido Branch, Tohoku Branch, Tokyo Branch, Nagoya Branch, Osaka Branch, Hiroshima Branch, and Kyushu Branch
Domestic Offices	53 locations nationwide
Overseas Branches	Philippine Branch, Singapore Branch
Overseas Representative Offices	Vietnam Representative Office, Indonesia Representative Office