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The water urban siting and prosperity important consideration Bangshui the founding of the city, since ancient times, and of course. Especially water problem is particularly prominent in the capital site, which in addition to the \Song capital of the river systems are widely distributed, adequate water, with strong carrying capacity of the city. Song generation, since too Zu Jianguo to Hui and Qin Emperor \political and military policy, the social environment is relatively stable. Good and adequate water and relatively stable social environment and jointly promote economic development, creating a prosperous scene of the Northern Song Dynasty Kaifeng, Tokyo's history and a glorious fight Minato, nations Xiantong \But with the rapid population growth and increase in atmospheric pollution, water supply and water quality constraints affect the decline in the capital of development is increasingly obvious. Kaifeng and Lin'an heyday of more than one million population, life or business district house connection, row upon row of narrow streets, lanes congestion, the number of population, density of the carrying capacity of the water pressure. Two city water consumption, heavy pollution and handicrafts (such as dyeing, paper, etc.), the relative concentration of the larger overall size of the to longevity new problems for water supply and clean. In this regard, the the Song government adopted a more comprehensive and state-of-the-art water supply and discharge and conservation measures. Water supply aspects Kaiqu the (river) diversion into the city, sinking water (groundwater wells and surface wells), tank water storage and human water supply, compared the characteristics of the surface wells, tanks for the establishment and the rise of the water supply services industry, two capital in the case of further urbanization, population density continues to increase still adequate water supply: drainage network layout, tend to improve, especially the laying of underground drains a few goes with the modern city, the city nothing Yonge, of all depends. \More advanced and effective water supply and drainage, city water into, and the band, to ensure the normal operation of the urban functions. Just, multi-objective and man-made reasons, the Song capital of water sanitation overall situation is deteriorating. Blockage of river channels, deterioration of water quality as well as affect the living and physical health problems quite documented in the literature. These problems to some extent hindered the further development of the city, this is not unrelated As for the two cities, Kaifeng fading.
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