it doesn't really matter where it comes from , UU get it for free (rain) then charge extortionate prices to get it to your home and then charge again for taking it back , all this without keeping up any general maintenance just repairs when an emergency arises
That's one of the silliest posts I've seen on here! If it's so easy and free why don't you have your water supply cut off and just use the 'free rain'. I'm not sure what you'd do with your toilet waste etc, but you wouldn't have to pay a water bill. Sorted.