No drainage entity may drain sewage into the urban drainage pipe network and its accessory facilities if it fails to obtain an urban drainage license. 未取得城市排水许可证书，排水户不得向城市排水管网及其附属设施排放污水。
The new pipes and network will be designed and built for treatment of early-stage rainfall. 新建排水管网考虑初期雨水处理设计。
