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。
Article 3 to drain sewage into the urban drainage pipe network and its accessory facilities, a drainage entity shall apply for an urban drainage license in accordance with these Measures.
第三条排水户向城市排水管网及其附属设施排放污水，应当按照本办法的规定，申请领取城市排水许可证书。
For extra reassurance, the gutters catch excess water and drain it away through the sewage system.
另外还保证排水槽可以保存过量的水并且通过排水系统排出。
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