The Clean Water Act was amended by the Water Quality Act(WQA) of 1987. 《洁净水法案》在1987年修改成《水质法(WQA)案》。
Water Quality Standards are the foundation of the water quality-based pollution control program mandated by the Clean Water Act. 描述:环保署水质标准:建立水质污染防治项目,进行清洁水行动。