Reference meters - in southern area it was seen as a money making exercise as they did not appear to solve any other issues (leaks mainly) also a lot of business such as shops and small offices did not have meters but it was compulsory for new builds. So unsure if it were to be compulsory for PW customers.
Not sure people actully change habits re informetion about wast and meters - but i think you have to try and inform all the time - even though it costs. recyling water (water buts and tanks for garden use is the only thing i see working 
with a good number of people - but again not on new builds as they do not seem to install!).