Mmm, lots of replies that have nothing to do with the original question, and Ithought the question a good one too, if you bother to answer it then it is one that takes a bit of thought...
If I had to pack in WFP it would have to be for a physical reason, perhaps a neck problem caused from using a heavy pole doing lots of high work, ditto perhaps the small of the back.
I honestly can't think of any other reason for stopping WFP
I suppose that being on a meter could be a prohibative factor in some circumstances.
Or you may be forced to stop using one if Councils bring in a water ban under extreme drought conditions.
It's unlikely, but it is possible they could tell you that there is an alternative to using a half ton of water a day (that will waste as much as a ton and a half to produce it!) And that is with a bucket of water, a drop of detergent, some cloths and an applicator and squeegee.
15 litres a day versus 2000 litres a day
(that includes the waste water at a rate of 3:1 and yes, I know some R/O's can have a ratio of 1:1)
So if you stretch the point a fair way, then you could possibly be forced to go back to trad for a couple of months until the water ban would be lifted.
And I am not mentioning WAHD, the above synopsis is not about arguing the toss about safety, so no "Ahh, but, yeah, but, no but yeah but what about health and safety and working at height then?" replies please!!
Regards,
Ian