为了加大城市节水和水污染治理的力度 ,山东省制定了一系列节水治污措施。年用水量 2万ｍ3 以上的宾馆、饭店、商店、公寓、综合服务楼和高层住宅建筑 ,建筑面积 3万ｍ2 以上的机关、科研单位、大专院校和大型综合性文化体育设施 ,规划人口在 3万人以上的住宅区 ,必须建设中水 In order to increase urban water conservation and water pollution control efforts, Shandong Province has formulated a series of water pollution control measures. Hotels, restaurants, shops, apartment buildings, integrated service buildings and high-rise residential buildings with annual water consumption of over 20,000 m3, institutions, research institutes, universities and colleges and large-scale comprehensive cultural and sports facilities with a building area of ​​over 30000 m2 and a planned population of In a residential area of ​​more than 30,000 people, water must be constructed