has anybody tried having a 4040 in their van and using customers water?
I have. Blocks of flats (not my job but I was subbed) took about 2,500 litres each clean (quarterly) so obviously couldn't carry that.
It was in Birmingham, good pressure. We went down with about 1,400 litres from memory.
Plugged into their tap and cracked on. End of the day (long day) think we drove home with just drips in the bottom.
Job done though. Happy days.