Transparency is always the ...

Transparency is always the first step to raise the level of awareness as a pre-requisite for changing behaviors, given the right incentives.... So I am great supporter of providing transparency on water consumptions of the goods and services we use. What seems to be more difficult for me to grasp, is the whether the water consumed is precious or not... in other words the measure does not give any information about the (mostly local) opportunity cost of that water (i.e. could it have been used better in the first place). At the end of the day, we have so far always built our habits on economic (dis)incentives. If water was priced taking into account all externalities, product prices would adequately reflect the purposeful use of water.