FUJI Subsurface Informations Ltd.
Corporate brand
UnclaimedJapanese water and sewer pipeline maintenance specialist providing leak detection, metering, GIS mapping and AI-based asset diagnostics, part of the Veolia group.
Last updated September 28, 2026
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Overview
FUJI Subsurface Informations Ltd. (フジ地中情報株式会社) is a Japanese company specializing in the maintenance and management of water supply and sewerage pipeline facilities. Headquartered in Minato-ku, Tokyo, it operates nationwide through a network of branches and sales offices covering Hokkaido, Tohoku, Kanto, Hokuriku, Chubu, Kansai, Chugoku, Shikoku, Kyushu and Okinawa. The company traces its origins to 1970, when it began as the leak-detection division of Fuji Sangyo Co., Ltd. (now Fuji Tec Co., Ltd.), and was incorporated as an independent entity in 1972 under the name Fuji Leak Survey Center Co., Ltd. It adopted its current name, FUJI Subsurface Informations Ltd., in 1985. The company's core business is the maintenance and management of water and sewerage pipeline facilities. Its services include leak detection surveys for water distribution networks, pipeline diagnostics, underground utility locating, meter reading and billing/collection services for water and sewerage utilities, and the operation and maintenance of water and sewerage facilities. It also provides information drawing and GIS (geographic information system) services, and is registered as a construction consultant and surveyor. In recent years it has expanded into DX and ICT solutions, aggregating field, facility and equipment information to support operational efficiency for utilities. FUJI Subsurface Informations has developed a number of proprietary technologies and software products over its history. These include the Leak Zone Test method (1977), the correlation-type leak detection method (1981), the F-Map drawing information management system and F-LEAD leak information management system (1984), and later the Fmap series of mapping and pipeline management systems. More recently it has developed AI-based deterioration diagnosis systems such as Fmap MIRAI (2023) and has obtained numerous patents related to pipeline monitoring, water pipe renewal management, fixed asset management, hybrid meter reading, and AI-based deterioration diagnosis and earthquake damage prediction. Since 2007, the company has been a group company of Veolia Water Japan K.K. (now Veolia Japan GK), part of the global Veolia group. As of December 2023, it employed 978 people and had capital of 100 million yen. Its corporate philosophy is expressed in three principles: technical creation, mutual trust, and social contribution. The company positions itself as contributing to a circular economy through its role as a water and sewerage maintenance company.
History
FUJI Subsurface Informations Ltd. began in 1970 as the leak detection division of Fuji Sangyo Co., Ltd. (now Fuji Tec Co., Ltd.). In 1972, it was spun off and incorporated as Fuji Leak Survey Center Co., Ltd. (株式会社フジ漏水調査センター). The company developed the Leak Zone Test method in 1977, registered as a construction consultant in 1979, and established the correlation-type leak detection method in 1981. In 1982 it registered as a surveyor. In 1984 it developed the F-Map drawing information management system and the F-LEAD leak information management system. In 1985 it changed its name to FUJI Subsurface Informations Ltd. (フジ地中情報株式会社). In 1986 it received certification from the Ministry of Labour for its in-house "Fuji certification" for leak detection work. In 1990 it registered a utility model for a sound pressure and water pressure measuring device for fire hydrants. In 1994 it obtained a patent for a water shut-off location indication method. In 1997 it developed PC-based mapping systems (F-Map Edel, F-Map File). In 1998 it joined the Japan Water and Sewerage Consultants Association. In 2000 it obtained a patent for a water pipeline monitoring method and device, and acquired ISO 9001 certification. In 2001 it developed pipeline network hydraulic calculation software (F-Map Calc). In 2007 it became a group company of Veolia Water Japan K.K. (now Veolia Japan GK). In 2008 it acquired ISO 27001 certification. In 2012 it obtained a patent for a water shut-off pipeline search method. In 2015 it obtained a patent for a mapping system and renewed the mapping system as Fmap Base. In 2016 it obtained a patent for a water pipe renewal management system. In 2019 it obtained a patent for a fixed asset management system. In 2021 it obtained a patent for hybrid meter reading. In 2023 it obtained patents for AI integration technology, provision of buried pipe information from electronic applications, and an AI-based pipeline attribute information supplementation system; it also developed the AI deterioration diagnosis system Fmap MIRAI. In 2024 it acquired Privacy Mark certification and obtained patents for AI unsupervised learning deterioration diagnosis analysis, AI-based earthquake damage prediction, AI pipeline renewal planning, and AI-based renewal plan simulation.
- 2024
Acquired Privacy Mark certification; obtained patents for AI unsupervised learning deterioration diagnosis analysis, AI-based earthquake damage prediction, AI pipeline renewal planning, and AI-based renewal plan simulation
- 2023
Obtained patents for AI integration technology, provision of buried pipe information from electronic applications, and AI-based pipeline attribute information supplementation system; developed AI deterioration diagnosis system Fmap MIRAI
- 2021
Obtained patent for hybrid meter reading
- 2019
Obtained patent for fixed asset management system
- 2016
Obtained patent for water pipe renewal management system
- 2015
Obtained patent for mapping system; renewed mapping system as Fmap Base
- 2012
Obtained patent for water shut-off pipeline search method
- 2008
Acquired ISO 27001 certification
- 2007
Became a group company of Veolia Water Japan K.K. (now Veolia Japan GK)
- 2001
Developed pipeline network hydraulic calculation software (F-Map Calc)
Products and positioning
A water and sewerage pipeline maintenance specialist contributing to a circular economy, combining field expertise with proprietary technologies and AI-based solutions.
Fmap series
Mapping and pipeline management systems for water and sewerage utilities, including Fmap Base and Fmap MIRAI.
F-LEAD
Leak information management system developed in 1984.
Fmap MIRAI
AI-based deterioration diagnosis system developed in 2023.
Leak Zone Test method
Proprietary leak detection method developed in 1977.
Correlation-type leak detection method
Leak detection method established in 1981.
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