Hi guys. New to this and looking for some info about drainage. I'm getting a summerhouse built for my partner to turn in to a hair and nail salon. The problem is I'm looking to put in a toilet and sink plus a backwash for her washing hair in. I'll be running it all through a macerator since running it on flat ground is the easiest option. Only I can't get to the toilet waste pipes so can this be run in after the kitchen waste pipe at all? Thanks a lot.