Ifv pole system is banned, a lot of other activities will also need banning. Like washing council vehicles, cleaning floors in council buildings, watering council hanging baskets, topping up council swimming pools, washing of private cars,
I have heard that the main issue is not the water use but evaporation. If the water goes back into the drains then that is viewed as ok. Might need to collect the waste water though using pro-10 or similar and put it down sewer?