A growing population combined with huge demand of water for development purposes has put excessive stress on available water resources in India. From 813 billion cubic metres in 2010 the demand of water is set to reach 1,093 billion cubic metres by 2025 in the country. Wastewater management is the only hope for a sustainable future. And, India can adopt the Japanese way of treating wastewater. Toshiba, a Japanese multinational engineering and electronics conglomerate corporation, is using the Whole Effluent Toxicity (WET) method on a trial basis as a new way of investigating the impact of wastewater from its production sites on the environment. Toshiba Group carried out these tests at five production sites, including the Toshiba Yokohama COmples, which were chosen from among the various industries in which it operates.