韩国首都汉城是国家的政治、经济和文化中心,城市面积627km~2,全国总人口约4300万人,其中四分之一人口在这里居住。汉城的现代自来水创建于1908年9月,其时供水能力仅1.25万 m~3/d,1956年提高到23.8万 m~3/d,供水人口102万人,随着经济的发展,国民收入大幅度 Seoul, the capital of South Korea, is the country's political, economic and cultural center. Its urban area is 627 km2 and the total population of the country is about 43 million. One quarter of the population live here. Seoul's modern tap water was established in September 1908 at a time when the water supply capacity was only 12,500 m 3 / d, increased to 238,000 m 3 / d in 1956 and the population of water supply was 1.02 million. With economic development, the national income Dramatic