In Sydney's drought thirsty suburbs, one water-conscious grandmother draws on her Lebanese upbringing to teach her family the value of every single drop. Eighty-seven year old Salma knows a thing or two about water conservation from her childhood in the Lebanese village of Jezzine, where she learnt 'the most important part of washing is the wringing', Selma has squeezed the most out of every single drop. She instilled in her own children such a value for recycling that one of her sons, a mechanical engineer, has invented a new way to control fluid that not only saves 80 per cent of water but could also revolutionise the way we turn on a tap.