New proposal of inclusion of difference among countries or regions into evaluation of environmental loading arising from use of water resource

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Studies were conducted in three country where circumstances of water resources is different. Willingness to pay was evaluated in various methods for water use, preservation of upstream water resource and water pollution control in Beijing, China. Perception of residents about contribution of water use sector to water shortage, earning money, pollution, damage due to water shortage and water loss was surveyed and analyzed in Dhaka, Bangladesh. Damage of future flood under climate change was estimated in Hat Yai, Thailand.