Rivers Regional Council (RRC) represents the Gosnells, Armadale, Serpentine Jarrahdale, South Perth, Mandurah, Murray and Waroona councils.
Chairman Ron Hoffman said with landfills reaching capacity (he predicted the Cardup site the City of Gosnells uses will fill in three years), waste management practices needed to change now.
He said the RRC had spent four years preparing to join other regional councils and build an alternative.
Of the other regional councils, Mindarie has its own facility, South has Canning Vale’s Regional Resource Recovery Centre, Western is building one and Eastern is preparing its own tender.
Use of recycling, composting and waste-to-energy technologies between centres differs greatly.
Mr Hoffman said the RRC had made the major decision to go to tender, instead of building a centre itself, to limit costs and risk to member councils.
‘It has taken a lot of effort and work on a lot of people’s parts to get to this point,’ he said.
A working group of officers from RRC member councils is preparing the tender for endorsement, probably in May.
Mr Hoffman said the tender would name the City of Canning as a possible contributor to waste supplies.
He said the Robson Review of local government, which had many recommendations on waste treatment, would not affect the process.