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Corporate InformationSustainability

Our intelligent water system contributes to society by creating an optimized water cycle for as many people as possible.

State of Global Water Resources

In the 21st century, water shortages and pollution are expected to become more acute as populations grow and concentrate in cities. There is a worldwide need for social infrastructures that conserve and use limited water resources and create sustainable living environments.


Physical water scarcity: More than 75 percent of river flows are allocated to agriculture, industries or domestic use, with water resource development close to or beyond the sustainability threshold.
Economic water scarcity: Less than 25 percent of water from rivers is drawn for use by people, but that water is not being adequately distributed because of shortfalls in human resources, facilities, and financial resources.

Based on: IWMI Annual Report 2006/2007(International Water Management Institute)

Hitachi Water Environment Solutions

Island of Malé in the Republic of the Maldives

In fiscal 2010, we set up the Water Environment Solution Division to increase deployment of our intelligent water system. We are working on a water recycling project in Dubai to improve water quality that has deteriorated due to population growth and a desalination project in India to provide a stable water supply for industrial use from desalinated seawater. Other projects include water and sewage management systems and deep seawater systems for air conditioning to reduce CO2 emissions in the Maldives, as well as solar-powered desalination equipment in Abu Dhabi to protect rare desert animals.

We will work to expand our business in China, Southeast Asia, and emerging nations. In developed countries, we will further advance systems that optimize intelligent water cycles.

Hitachi's Worldwide Water Environment Solutions

Project Main Developments Hitachi Group Involvement
Water recycling in Dubai (UAE) August 2008
Hi Star Water Solutions LLS established as a joint-venture company
February 2009
Water recycling business launched
An urban development boom in Dubai has caused social problems such as deteriorating water quality. Hitachi built a plant using membrane technology to treat wastewater. At the plant, a business has been launched that supplies inexpensive treated water to nearby factories for industrial use.
Solar-powered desalination units in Abu Dhabi (UAE) Sept. 2009
Hitachi contracted
Oct. 2010
First unit supplied
Nov. 2012
Partial operation
March 2013
All 15 units supplied
We participated in a project to protect the endangered Arabian oryx and other desert-dwelling animals. Hitachi's solar-powered desalination units convert highly saline well water into fresh water for desert animals.
Seawater desalination project in Dahej, Gujarat, India Dec. 2009
Japan-India Summit agreement
March 2012
Joint development contract
Jan. 2013
Water supply agreement
We are helping to build one of the largest seawater desalination plants in Asia, part of an agreement between the governments of Japan and India on smart community development. The plant is expected to provide a stable supply of industrial water over 30 years (including construction) at a rate of 336,000 m3 per day.
Water and sewage business in the Maldives Jan. 2010
Hitachi acquired 20% of shares in Malé Water and Sewerage Company Pvt. Ltd.
We installed approximately 200 seawater desalination units, an information management system for pipe network in the island of Malé and a water-cooled air conditioning system using deep-sea water in airports and buildings, enabling a reduction of 12,450 tonnes of CO2 emissions per year (estimate).

Hitachi's Intelligent Water System

In Japan, we have supplied equipment and systems for 550 domestic water treatment plants and 2,800 sewage treatment plants, in addition to 900 monitoring and control systems. As well, we participate in water-related projects in 40 countries. Our intelligent water system contributes to society by creating an optimized water cycle for as many people as possible. We achieve this by coordinating our infrastructure technologies—water and sewage treatment, industrial wastewater treatment, desalination, and water recycling technologies—with information management and control systems to optimize water use.

Hitachi's Intelligent Water System Concept