The Mid-West and South-West Gas Distribution Systems are owned by ATCO Gas Australia Pty Ltd. The systems consists of gas networks that serve Geraldton, Eneabba, Bunbury, Busselton, Harvey, Pinjarra, Kemerton, Capel and the Perth greater metropolitan area including Mandurah. These networks combined comprise in excess of 12,000 km of gas distribution pipelines and service over 700,000 residential and business customers.