You state that having a water meter could save money on waste water bills.  This is not the case as far as I can tell from information from Southern Water.
 Meters are not cost effective in every case, especially those who have a low water supply bill.  People should be made aware that they may have to pay more.
You should focus on improving the network and preventing wastage from leaks - the target should be higher than 15% I think. Currently losing 35million litres per day.  That is a lot of water.