用自来水一般都是安装水表进行计量管理的。在住宅区水表大都装在户内,供水单位按水表读数向用户收取水费。对于单家独户不成单元的用户,供水单位抄表到户收水费。而对于构成单元的用户如住宅楼、多户宅院,常采用在每个用户内设置水表(或称分表),单元设置总表的计量管理方式,供水单 Tap water is generally installed on the water meter for metering management. Most of the water meters in residential areas are installed indoors, and the water supply unit collects water fees according to the water meter readings. For single-user households that do not constitute a unit, the water supply unit reads the meter to the household to collect the water fee. As for the users that make up the unit, such as residential buildings and multi-family homes, the water meter (or sub-table) is set in each user, and the metering management method of the unit setting master table is often used.