This home site in the Blue Mountains required 2 x 10,000L water tanks to be installed behind the house. Here we are installing them prior to even the slab construction. Allowing easy access & reducing site costs for the owner & headaches for the builders.
Tank #1 was to retain 10,000L's for the fire zone accreditation. Which was then to overflow into Tank #2...
Tank #2 Was a further 10,000L's for the BASIX requirments.