This footbath thing - never heard of it until recently - on THIS site. Here in the UK there’s the usual demands by muslims along with private & public entities pandering to them, but nothing about footbaths. Are these things common in islamic countries? Would have thought a number of them don’t have running water much less expensive specialist fittings such as these.
I posted a link above to a post entitled "All Your Toilets Are Belong To Us" that answers that very question.