Backflow devices

A list of all registered Backflow devices within the City as at a point in time, which is updated monthly. A Backflow device is used to prevent reverse flow from a potentially polluted or contaminated source into a drinkable water supply.

本数据集为截至某一时间节点本市所有已登记的防回流装置（Backflow device）清单，每月更新一次。防回流装置用于防止具有潜在污染风险或已受污染的水源反向流入饮用水供水系统。