对污染主体应征收污染税或罚款,使其污染行为面临真实的社会成本;对政府治污应通过经济补贴,使其治污工作的供给基本等于社会要求的最优水平正在建设中的南水北调项目,是中国为解决南北水资源不平衡而实施的战略工程。其中的中线一期工程,预计总投资近2000亿元人民币,因其水质好、覆盖面广的突出优点,早已成为沿线22座城市 Pollution taxes or fines should be levied on the main pollutants so that their pollution activities will be confronted with real social costs. To the government pollution control, the supply of pollution control should be basically equal to the optimal level required by the society through economic subsidies. Under construction, the South-to-North Water Diversion Project Is China’s strategic project to solve the imbalance between water resources in the South and North China. Among them, the first phase of the mid-line project is estimated to have a total investment of nearly 200 billion yuan. Due to its prominent advantages of good water quality and wide coverage, it has already become the 22 cities along the line