Skip to main content

This page has been translated using TexTra by NICT. Please note that the translation may not be completely accurate.If you find any mistranslations, we appreciate your feedback on the "Request form for improving the automatic translation ".

Management Status Dashboard for Water Supply, etc.

Last Updated:

Notice

  • The data was updated on August 21, 2025.

Table of contents

  1. About the Water Supply Business
    1.1 Structure of Mechanisms of Water Supply Projects
    1.2 MIERUKA for Sustainable Water Supply Projects, etc.
    1.3 Indicators of Indicators related to the management of water supply, etc.
  2. Business Conditions in Japan
    2.1 Annual Trends in Major Indicators in Annual Trends in Major Indicators Nationwide
    2.2 Combined Status of Water Supply Systems in Combined Status of Water Supply Projects, etc. in Each Prefecture
    2.3 Status of Water Supply Systems in Status of Water Supply Projects in Prefectural Governments
    2.4 Annual Trends in Household Water Charges in Annual Trends in Domestic Water Charges
  3. Business conditions of each water supplier, etc.
    3.1 Annual Trends in Major Indicators of Annual Trends in Major Indicators of Water Suppliers, etc.
    3.2 Comparison of Similar Organizations in Comparison of Similar Organizations
  4. Important Points

1. About the Water Supply Business

1.1 Structure of Mechanisms of Water Supply Projects

Waterworks mainly consists of two businesses to supply safe and secure tap water.

  1. Water supply business: A business that takes in water from rivers and dams, purifies it, and delivers it to households through distribution pipes, etc.
  2. Water supply business: A business that takes in water from rivers and dams, purifies it, and delivers it to water suppliers on behalf of the water suppliers.

The cooperation of these projects has created a system in which tap water can be used anywhere in the country.
*In this dashboard, water supply is included, so the expression "water supply, etc." is used for convenience.

Conceptual Diagram of Water Supply System
This image shows the mechanism of water supply projects. Water is sent from a water source to a water purification facility through a water conduit connected to a water intake facility, and is stored in a distribution reservoir through a water pipe connected to the water purification facility. The stored water is then delivered to households and businesses through a water supply pipe connected to the distribution reservoir. The entire mechanism is surrounded by a blue frame, indicating that it is divided into two main water supply projects: "water supply and sewage projects", which are projects with a planned water supply population of 5,001 or more, and "small-scale water supply projects", which are projects with a planned water supply population of 101 to 5,000. Within the blue frame, the area from the water source to the water supply pipe is surrounded by a dotted blue frame and is described as "water supply projects."

1.2 MIERUKA for Sustainable Water Supply Projects, etc.

The operating environment for the waterworks and other businesses will become increasingly challenging in the future due to the aging of facilities, the decrease in on-site personnel, and the decline in income associated with the declining population. In order to continue to provide sustainable waterworks services for the future, it is essential to promote DX to transform working styles and operations.

Against this backdrop, Ministry of Internal Affairs and Communications, the Ministry of Land, Infrastructure, Transport and Tourism, and the City of Digital Agency have established a dashboard to provide an overview of the management status of water supply projects to employees involved in water supply projects. The dashboard is useful for discussing improvements, promoting initiatives, and explaining the management status of water supply projects.

1.3 Indicators of Indicators related to the management of water supply, etc.

In order to realize sustainable management of water supply and other businesses, it is necessary to comprehensively grasp indicators related to facility conditions, such as aging, earthquake-proofing, and efficiency, from indicators related to financial conditions, such as profitability and asset management. The dashboard visualizes the following three indicators so that people involved in the management of water supply and other businesses can grasp the situation and perform comparative analysis.

  1. Basic information: Population and area supplied with water
  2. Financial status: Figures for rate collection rate, water supply cost, current ratio, etc.
  3. Status of facilities: Figures such as the aging rate of pipelines, the seismic adequacy rate, and the facility utilization rate
Indicators of Water Supply Management
An image showing the classification of indicators in the form of (1) basic information, (2) financial status, and (3) facility status. On the left is "1. Basic information" in a blue frame with a white frame containing basic information such as the name of the industry and the name of the business. On the right is "Water supply management" in a blue frame with blue frames containing "2. Financial status" and "3. Facility status." Within "2. Financial status," "Income and expenses," such as the current account ratio and the rate of recovery of charges, and "Assets and liabilities," such as the current ratio and the capital structure ratio, are outlined in white. Within "3. Facility status," "Aging," such as the ratio of aging pipes and the renewal rate of pipes, "Earthquake-proofing," such as the ratio of earthquake-proof pipes and the ratio of earthquake-proof water purification facilities, and "Business efficiency," such as the facility utilization ratio and the yield ratio, are outlined in white.

2. Business Conditions in Japan

2.1 Annual Trends in Major Indicators in Annual Trends in Major Indicators Nationwide

You can check the annual trend of major indicators related to water supply projects, etc. for Japan as a whole or for a specific prefecture. In order to give an overview of the status of water supply projects, etc., each indicator is shown as a total figure.

  • Combined figures: Weighted averages, medians, and distributions for all businesses are selected based on the appropriateness of each indicator. For details on each figure, see " Data Definition ."

2.2 Combined Status of Water Supply Systems in Combined Status of Water Supply Projects, etc. in Each Prefecture

You can check the combined figures for water supply and other services in each prefecture.
The indicators on the X-axis and Y-axis of the scatter graph and the indicators in the table can be changed to any indicators. By viewing the status of each prefecture in distribution or arranging them, you can grasp the status of water supply projects from multiple perspectives. You can also see the water supply operators in the prefecture selected in the table.

2.3 Status of Water Supply Systems in Status of Water Supply Projects in Prefectural Governments

You can check the individual figures of all the water works under the selected prefecture.
The indicators on the X-axis and Y-axis of the scatter diagram and the indicators in the table can be changed to any indicators. By viewing the status of each business in distribution or arranging them side by side, you can understand the differences in the status of each water supply business as objective facts. You can also view the time-series trends of water supply operators, etc. selected in the table.

2.4 Annual Trends in Household Water Charges in Annual Trends in Domestic Water Charges

You can see the level of domestic water charges of water suppliers across the country.
You can also see the magnitude of changes or differences over time.

3. Business conditions of each water supplier, etc.

3.1 Annual Trends in Major Indicators of Annual Trends in Major Indicators of Water Suppliers, etc.

You can check the annual trend of the main indicators of selected water suppliers, etc.

3.2 Comparison of Similar Organizations in Comparison of Similar Organizations

You can switch between the three tabs of "Financial Status," "Expense Breakdown," and "Status of Facilities" to compare the figures of the selected water suppliers, etc. and similar organizations with the latest fiscal year and annual trends. You can also check the figures of each indicator with the business operators belonging to the similar organization category from "See similar organizations ->".

4. Important Points

Data:

Various information used in the dashboard is collected by the Ministry of Land, Infrastructure, Transport and Tourism and Ministry of Internal Affairs and Communications.

These data are put together and published together as structured data for dashboards.

Defining Data

See below for a definition of data.

Refresh Data

We plan to update the various dashboard numbers on a regular basis.

True or false information

For true-or-false information about the statistics in this dashboard, see True-or-False: Dashboard on the Health of Water Utilities .

Contact Information

[Inquiries about this dashboard]
Water Supply and Sewerage Planning Division, Deputy Director-General Group, Water Management and National Land Conservation Bureau, Ministry of Land
Phone: 03 5253 8428
Email: hqt-kanrikikaku_ atmark_ gxb. mlit. go. jp
 
[For inquiries related to the "Survey on the Financial Results of Local Public Enterprises" and the "Management Comparison Analysis Table"]
Ministry of Internal Affairs and Communications Municipal Enterprise Management Office
Email: koueigiyo. suido_ atmark_ soumu. go. jp

*To prevent spam mail, "@" is displayed as "_ atmark_ ".
When sending mail, please replace "_ atmark_ " with "@" (single-byte).