fresh water main meaning in Chinese

总食水管

Laying of fresh water mains ; and
敷设食水管及
Fresh water main
总食水管
The existing 800 mm diameter fresh water main is a primary distribution main to serve the southern area of west kowloon reclamation including the west kowloon cultural district scheme area
现有的直径800毫米食水管是为西九龙填海区南部，包括西九龙文娱艺术区计划区，供应食水的配水管。
There are existing 800 mm and 1200 mm diameter fresh water mains alongside lin cheung road . which of these mains should be used to serve the development area , assuming kowloon point reclamation will not proceed
假设九龙角填海计划不会继续进行，沿连翔道现有的800毫米和1200毫米食水管，哪一条会用来为发展区供水？