domestic water supply system

例句：

1. 1.The new domestic water supply system has greatly improved our daily life.
   新的家庭供水系统极大地改善了我们的日常生活。
2. 2. The government is working on a plan to upgrade the domestic water supply system.
   政府正在计划升级家庭供水系统。
3. 3. The new domestic water supply system will be installed in all homes within the next year.
   新的家庭供水系统将在明年安装到所有家庭中。