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Water 2012, 4(3), 533-544; doi:10.3390/w4030533

Creation of Carbon Credits by Water Saving

1,* , 1
1 ESG Promotion Department, TOTO LTD, 2-1-1, Nakashima, Kokurakita-ku, Kitakyushu-City 802-8601, Japan 2 CDM/JI Senior Consultant, Clean Energy Finance Committee, Mitsubishi UFJ Morgan Stanley Securities Co., Ltd, 3-3-20, Toyosu, Koto-ku, Tokyo 135-0061, Japan 3 Department of Architecture, School of Science and Techinology, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki-City 214-8601, Japan
* Author to whom correspondence should be addressed.
Received: 13 June 2012 / Revised: 27 June 2012 / Accepted: 28 June 2012 / Published: 9 July 2012
(This article belongs to the Special Issue Sustainable Water Systems)
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Until now, as a way of reducing greenhouse gas emissions from Japanese homes, the emphasis has been on reduction of energy consumption for air-conditioning and lighting. In recent years, there has been progress in CO2 emission reduction through research into the water-saving performance of bathroom fixtures such as toilets and showers. Simulations have shown that CO2 emissions associated with water consumption in Japanese homes can be reduced by 25% (1% of Japan’s total CO2 emissions) by 2020 through the adoption of the use of water-saving fixtures. In response to this finding, a program to promote the replacement of current fixtures with water-saving toilet bowls and thermally insulated bathtubs has been added to the Government of Japan’s energy-saving policy. Furthermore, CO2 emission reduction through widespread use of water-saving fixtures has been adopted by the domestic credit system promoted by the Government of Japan as a way of achieving CO2 emission-reduction targets; application of this credit system has also begun. As part of a bilateral offset credit mechanism promoted by the Government of Japan, research to evaluate the CO2 reduction potential of the adoption of water-saving fixtures has been done in the city of Dalian, in China.
Keywords: global warming; CO2 reduction; water; saving-water; Japan global warming; CO2 reduction; water; saving-water; Japan
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Shimizu, Y.; Toyosada, K.; Yoshitaka, M.; Sakaue, K. Creation of Carbon Credits by Water Saving. Water 2012, 4, 533-544.

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