Just a quick update on what has happened since, had another high bill of over 200 dollars for 2 months of water usage! So started watching the meter when flush was pulled, when hubby in shower etc and it was using what was expected, noted what it was when we went out came back hours later no change in meter reading.
Now by then we had calculated according to our bill we were using 1800 litres a day!!
One thing left to try, the retic, well it solved the mystery, it was using hundreds of litres a minute which was crazy as we had it on twice a day twice a week for 20 minutes a time!!
So we knew something was wrong, spoke to real estate manager, who tried fobbing us off with its normal and other houses have similar bills, we knew it wasn't normal so stopped using the retic and bought a hosepipe with a sprinkler! Have that on for the same times we had retic on and everything included we have used around 8000 litres in 7 weeks! Next bill should be in soon so hoping for a lower one, given up with real estate manager they aren't interested and I can't be bothered to let them know its the retic leaking somewhere....