Which of the following processes requires separate plumbing?

a. water reclamation

b. desalination

c. greywater use

d. none of the above

The answer is C. greywater use

the process that requires separate plumbing is : C. grey water use Grey water refer to the clean waste of bath, sinks, and washing machine. If we do not separated, it could mixed out with the water that we use for our consumption and will compromise the sanitary