Thanks Matt
A 44,000 litre per day Reverse Osmosis system would cope nicely with the demand.
So 10 correctly set up merlins with pre pumps and nice big dI tank will more than do the job.
I was hoping for a reply from Steveyboy on why a 60 psi is not good enouth.
I am sure he will be over the moon when I find the areas he works in and sell his prospective customers a residential pole and DI bottle so they can save a fortune on his window cleaning bills