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About Us

A page number:496-877-096

Bureau of Environment is responsible for the environmental health in Tokyo. We have been adressing various urban environmental challneges such as climate change, air pollutions, waste management, and loss of natural environment.

As the capital of Japan, one of the world’s leading cities, Tokyo has implemented effective policies and established pioneering new model towards low-carbon city with high aspirations, in collaborating with its citizens, nonprofit organizations, businesses, other local governments in Japan, and major cities around the world.

In Tokyo—where urbanization has already advanced—about half of the entire area has been built up with commercial and residential development. As a result, the nature and greenery have shrunk markedly. In order to protect and restore nature, TMG has been making efforts toward green conservation, regulating property development, and promoting greenery in urban areas, based on the Tokyo Metropolitan Nature Conservation Ordinance and the 10-Year Project for a Green Tokyo.In addition to these efforts to maintain the quantity of greenery, and in order to respond to the loss of biodiversity causing the extinction of various species at a global scale, TMG is promoting new measures for considering green quality.

In the mid-1960s, Tokyo’s air was polluted mainly by soot and smoke from factories. Today this is no longer the case, thanks to measures against stationary sources, such as strict control of boilers and other air pollutant sources and the use of higher-quality fuel.
A problem that developed later was pollution caused by the increase in automobile traffic and exhaust gas from diesel vehicles. Therefore, in October 2003, TMG established diesel vehicle emission regulations. As a result, Tokyo’s air quality has been dramatically improved.
However, other issues remain, such as measures against photochemical oxidants and air pollution in the coastal area of the Port of Tokyo. TMG is tackling these issues in order to create the world’s cleanest urban environment. TMG is also working on initiatives including measures against airborne asbestos from the demolition of buildings to relieve the concerns of Tokyo residents.

Although the water quality of these rivers deteriorated significantly during the period of high economic growth, there has been remarkable improvement since the early 1970s due to the control of sources such as factories, and improvements to sewage systems. Since then, the condition of the rivers has improved and stabilized. However, TMG is very keen to combat the remained challenges
Also, soil contamination was revealed to be a serious problem in urban areas in the early 1970s, accompanying urban redevelopment. Since soil contamination is also closely related to groundwater contamination and both have long-term effects, social concern over such issues is high and effective measures are essential. Therefore, in order to prevent impairment of human health due to soil contamination, TMG established regulations concerning measures on soil contamination in the Tokyo Metropolitan Environmental Security Ordinance.

TMG adopted the Sustainable Materials and Waste Management Plan, a 5-year plan from 2016 to 2020 which aims to shift toward a sustainable use of resources and hand over a better city environment to future generations. Through steady implementation of the policies set forth in such plans, TMG is contributing to the creation of a sound material-cycle society.

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