I would suggest you look at Gorman Rupp. The performance of their T series sewage pumps is exceptional and the quality is consistent. As I recall, they have a joint vanture manufacturer active in Australia, although I can't remember which state. In Ontario, Canada, where I practise, we have supplied some 25 stations in the last few years. Try Gorman Rupp International in Mansfield, Ohio USA (419)755-1011.