Potability should be probable, not just possible ...

Although water recycling is an accepted part of life in Singapore, London, Namibia and parts of California, Australia still seems tentative. 

Only last week, Queensland Premier Anna Bligh reversed Government plans to use recycled waste water in the south of the state; two years ago, residents of Toowoomba voted against using recycled sewage for drinking water.

Therefore, is it surprising that the "yuck factor" still holds sway in Victoria?

See - The Age - Potability should be probable, not just possible.

London?  Singapore at 1% ...