It's going to be a long time until we are all put on water meters, and the extra income you can generate with WFP will outweigh any extra cost in water charges.
How much is a squeegee rubber? Some change their rubbers every day, not me I might hasten to add
A £1.00 or £2.00 a day cost isn't much of a burden really is it? And thats if you are using upwards of a full cubic meter a day
Well ok, less than that because of the waste water produced.
Will also depend whether you are on main sewage or septic/cesspit.
And of course what your own particular water board charge you.
Ian