Solution promotion

Public IT works

We have a rich proven track record in the area of public service, in which we have won many contracts from municipalities and public offices.
Making the most of our know-how, which has been accumulated over 50 years and enables “reliable operation” and “quality assurance,” we support all aspects of work of customers.


We assist customers with their efforts to resolve management challenges through current situation surveys, analysis, evaluation, planning and other services.
We propose and provide optimal IT-based solutions to help customers to resolve their management issues and make effective use of their managerial resources.

  • IT strategy
  • Outsourcing
  • Systemization
  • Network construction
  • Hardware and software introduction
  • Security measures
  • Disaster management
  • System evaluation and diagnosis
  • PMO outsourcing/support
  • RFI & RFP creation outsourcing/support

System development

We have a proven track record in a wide range of development areas, from mainframe development to system development on tablet terminals.
We will select the most suitable methods to resolve specific operating challenges, such as development of a new system, system reconstruction, migration using existing system resources, and package introduction, and accordingly construct necessary systems.
Tokyo Water Co., Ltd. has acquired the certification of JIS Q 9001: 2015 (Quality Management System) and ensures thorough quality management by implementing development activities in accordance with its internal quality management system in all aspects of system development.
In addition, PMP-certified members are involved in, and supporting, respective development projects, while management is carried out in accordance with PMBOKR (Project Management Body of Knowledge) Guide.

  • Web system development (Java, ASP.NET, etc.)
  • C/S system development (.NET etc.)
  • Mainframe system development (COBOL etc.)
  • Handy terminal system development (C++, .NET, etc.)
  • Tablet system development (Java and .NET)

System maintenance

The operational expertise and professional knowledge which we have accumulated over 50 years enable reliable system operation.
We provide support in all areas of maintenance work required for system maintenance, such as dealing with system and device faults and repairing bugs. In addition, we also assist reliable system operation by responding to system inquiries, remote-monitoring systems operating in customers’ bases, conducting patrol monitoring, and so on.
Besides the above, more comprehensive packages of operating services, including entry of data, mass printing, forms control, binding, enclosing and sealing, delivery, etc., are also available to support the streamlining of operations.

System maintenance and operation

  • Responses to faults
  • Database maintenance
  • System updates
  • Replacement and updating of hardware and software
  • Help desk launch
  • A range of operating services (entry of data, mass printing, forms control, binding, crimping, enclosing and sealing, delivery, etc.)

Device and network maintenance and operation

  • Operating status monitoring
  • Updating of devices, OS, software, etc.
  • Fault isolation
  • Performance diagnosis
  • Coordination between vendors
  • Help desk launch
  • Device maintenance arrangements

System infrastructure construction

We design and construct optimal vendor-independent system infrastructure.
We identify requirements for business systems, either large or small, design optimal operating structures for them, and accordingly install and set devices and software and construct networks.

  • System infrastructure design
  • Network design
  • Taking care of, and providing support for, the creation of specifications for device and software purchases
  • Device and software installation and setting
  • Network construction

Data center

The data center assures tight security through 24/7/365 manned monitoring, video monitoring and triple sets of security doors.
We provide different operating environments to meet different needs of different customers, such as housing, hosting and ASP/SaaS.

  • Housing
  • Hosting
  • ASP, SaaS, etc.

Help desk/BPO

We take advantage of the system development know-how which we have accumulated over many years to enable the streamlining and optimization of operating processes. We organize outsourced inquiry-handling and administrative operations in the way that only system development vendors can and provide fine-tuned support to customers.

  • Various kinds of help desk operations
  • Payroll outsourcing
  • General affairs outsourcing

System product sales(Only in Japan)

We offer a “water and sewerage rate system” to contribute to increasing satisfaction among water service users, as well as an“attendance management system,” “payroll system,” etc. that can be adapted to many different forms of working.
Our “attendance management system” and “payroll system” are adopted not only by municipal governments but also by customers in a broad range of business categories.

Water and sewerage rate system “WISH”

Get your way as you wish.
Maximum user friendliness, as if it were built to your order.

Our water and sewerage rate system “WISH” realizes this wish.
The core system “WISH” and a broad spectrum of optional units from which you can freely select will support packaged outsourcing of water supply operations.

Pipeline design and quantity survey system

The purpose is to support a full range of core water supply operations, from mapping data-based development of design drawings, creation of bills of quantities and design specifications, to construction work management.
Our “pipeline design and quantity survey system” supports the processes from design to completion with information.
It provides information support for core water supply operations, ranging from preparation of documents, such as design documents, floor plans and piping diagrams, implementation of quantity surveys, creation of design specifications, to construction work management.

Attendance management system “KINTAI-Plus”

“KINTAI-Plus” is a system that supports efficient execution of attendance and work behavior management, such as recording of starting and leaving times, registration and approval of applications for leaves, overtime work, etc., outputting of forms, and so on.
By utilizing our cloud service, you can realize highly satisfactory attendance and work behavior management on-line with no need for capital investment.
Linking your payroll system to attendance and overtime work information can also increase the efficiency of your payroll accounting.

Payroll system “KYUYO ERK”

“KYUYO ERK” brings a sense of security and satisfaction to customers
Point(1): Integrated management of multiple payroll systems
Point(2): Services that can be customized to meet the needs of each customer
Point(3): A dependable payroll concierge service
Point(4): No capital investment required for utilization of this system
Point(5): Absolute security

Hydraulic and water quality surveys

Hydraulic and water quality information sensor

A new type of sensor that offers unprecedented compactness and energy-saving performance! Not only that, it is smaller (approx. 45%–60%) and provides more efficient electric power consumption (approx. 75%) than conventional models! Using fire hydrants and air valves, this sensor can simultaneously measure and record six different types of hydraulic and water quality data.
Installing multiple sensor units enables you to analyze various types of hydraulic and water quality information, such as the water flow conditions and water quality changes within a specific section of the water distribution network. The results can then be used to create basic information materials for distribution network analysis, measure the effectiveness of maintenance operations, and so on.


  • Allows the measurement and recording of multiple items (water pressure, flow rate, flow direction, residual chlorine, electrical conductivity, and water temperature)
  • Enables measurements to be taken for extended periods (10 consecutive days) with no interruption to supply
  • A portable model that eliminates the need for excavation or pipe-cutting work
  • Watertight structure (equivalent to IP68)
  • High reliability ensured

*This product has been jointly developed by TSS Tokyo Water Co., Ltd. and Hitachi High-Tech Solutions Corporation.

Internal washing of distribution pipes

Internal washing method for TS distribution pipes

This method offers an effective means of removing foreign matter (e.g., deteriorated seal coating) that has adhered to the inside of the distribution pipes.
A cleaning head is inserted from the fire hydrant T-tube, without any need for excavation or pipe-cutting, to remove foreign matter that has adhered to or accumulated on the inside of a distribution pipe. If foreign matter cannot be removed from the inside of the pipes by drainage washing, this method is an effective alternative as it allows the pipes to be cleaned by jet-spraying high-pressure water from the cleaning head and using a rapidly rotating brush.


  • Eliminates the need for excavation or pipe-cutting
  • Compatible with a broad range of distribution pipe diameters (φ75–350)
  • Allows cleaning to be performed with only a short interruption to supply, thereby causing little impact
  • Enables a long distance of up to 200 m/section to be cleaned on both sides of the insertion opening
  • Materials that can be removed: manganese, water scale, deteriorated seal coating, etc.

*This method has been jointly developed by the Tokyo Metropolitan Government Bureau of Waterworks, TSS Tokyo Water Co., Ltd. and Kubota Corporation.

Appearance of the cleaning head (φ150)

Leakage detection

TS Leak Checker(time integration-type leak detector)

We take measurements from service pipes, water meters, and other such equipment and detect the sound of water leaking in their proximity. When it is used to take measurements for service pipes, water meters, and other such equipment, the TS Leak Checker distinguishes between the continuous vibration sound associated with leaking water and other transient noise through time integration to judge whether any water leakages are present in the surrounding area.
This device is easy to operate and can be used to take water meter readings at the same time, thereby reducing the costs involved in conducting leak detection work.


  • Allows anyone to detect leaks easily
  • Can also be used during the day without any noise disturbance or other unwanted sounds (reduces the need for night-shift work)
  • Reduces the measurement time (1–5 s)
  • Compatible with a wide range of piping (PVC pipes, etc.)
  • Equipped with a built-in memory that can store up to between 2,000 and 3,000 leak detection data items
  • Equipped with built-in Bluetooth technology (for the wireless transfer of the measurement data to PCs, etc.)

TS Leak Checker

This device won the IWA-PIA2010 East Asia Grand Award in the Operation/Management category.

The International Water Association (IWA) presents its Project Innovation Awards (PIA) to recognize and commend excellence and innovation in water-related engineering projects.
When we entered the PIA in 2010, we won the East Asia Grand Award in the Operation/Management category for our leakage prevention technology using the TS Leak Checker, the product described below.

*The TS Leak Checker (SV1108A), the stick-type TS Leak Checker (SV1109), and the new-version TS Leak Checker (SV1110) have been jointly developed by TSS Tokyo Water Co., Ltd. and Nihon Water Solution Co., Ltd.

*The version of the TS Leak Checker that is equipped with a meter reading function (SV2000) has been jointly developed by TSS Tokyo Water Co., Ltd., Toshiba Infrastructure Systems & Solutions Corporation, and Nihon Water Solution Co., Ltd.