Major biological nutrient removal system at New Zealand WWTP to be upgraded

CH2M Beca Limited was chosen to upgrade the biological nutrient removal system at the Mangere WWTP in Auckland, New Zealand.

DENVER, CO, Sept. 3, 2013 -- CH2M Beca Limited, a joint venture between CH2M HILL, a global full-service consulting, design, construction and operations firm in the U.S. and Beca, the largest New Zealand owned engineering consultancy, was recently selected by Watercare Services Limited as the Professional Engineering Advisor to upgrade the biological nutrient removal (BNR) system at the Mangere Wastewater Treatment Plant (WWTP) in Auckland, New Zealand.

The treatment plant upgrade will further improve Auckland's water quality by reducing the nutrients going into the Manukau Harbour and increasing the capacity of the existing system will help accommodate the city's growing population.

CH2M Beca provides consulting engineering services and full project delivery to New Zealand's water and wastewater industry and has a strong history of working with Watercare, previously part of a team responsible for the successful completion of Project Manukau -- New Zealand's largest environmental restoration and WWTP construction project and recipient of the Supreme Award for New Zealand Engineering Excellence.

This project continues CH2M Beca's role at Mangere WWTP and will involve the design and tender documentation for a 2 m3/s capacity increase utilizing BNR in a 4-stage Bardenpho configuration. Subsequent stages will encompass the site supervision, as well as management of construction contractor and plant commissioning assistance and operator training. The project is scheduled for handover to Watercare in 2017.


Headquartered near Denver, Colorado, USA, employee-owned CH2M HILL is a global leader in consulting, design, design-build, operations, and program management for government, civil, industrial and energy clients. The firm’s work is concentrated in the areas of water, transportation, environmental, energy, facilities and resources. With US$7 billion in revenue and 28,000 employees, CH2M HILL is an industry-leading program management, construction management and design firm, as ranked by Engineering News-Record and named a leader in sustainable engineering and environmental services by Verdantix. The firm was named Water Company of the Year at the 2012 Global Water Awards. Visit us at,, and Search for jobs at

About Beca

Beca is one of the largest employee-owned engineering and related consultancy services groups in the Asia Pacific region. In 1918, Beca was established in New Zealand with only three employees and is still headquartered there. Now, Beca has a substantial Asia Pacific footprint approaching 3,000 employees in 17 offices across the world.


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