Mangere Wastewater Treatment Plant


New Zealand Water Services, a subsidiary of SUEZ, in consortium with Fletcher Construction, CH2M Beca and Bovis Lend Lease were commissioned in 1998 to design, build, commission and provide operational support of the Mangere Wastewater Treatment Plant, on behalf of Watercare Services Limited.

Prime Minister Helen Clark officially opened the project on April 4, 2003.

Major features of the project included:

  • Upgrading of existing water treatment facilities to advanced treatment standards using the latest technologies in Biological Nutrient Removal treatment.
  • Design and build the world's largest ultra-violet disinfection facility.
  • Decommissioning and restoration of the 500 hectares existing oxidation ponds to coastal marine environment.
  • Demolition of existing waste water treatment facilities, sludge lagoons and sludge drying bed.

SUEZ’s primary responsibilities on the project included the start-up and commissioning of new process units, and providing on-going operations supervision until substantial completion was reached.

Now completed, the plant is able to meet the sanitation needs of more than 1.2 million Auckland residents.

  • Mangere Wastewater Treatment Plant
  • Mangere, New Zealand
Project Type:
  • Design, Build, Operate and Maintain

  • Municipal
  • Waste Water

  • ADWF 300 MLD
  • PWWF 1,382 MLD
  • D&B: 1998 - 2003
    O&M: 2000 - 2003 (O&M support only)
Population served:
  • 1.2 Million
  • Successful completion of the world’s largest ultra-violet disinfection facility
  • Seamless transition
  • Decommissioning of 500 hectares of existing oxidation ponds
  • Restoration of coastal marine environment

© 2015 SUEZ Water & Treatment Solutions Pty Ltd