Together we deliver


Monadelphous provides comprehensive services to the water and wastewater industry, including planning, design management, construction, commissioning, training and the operation and maintenance of key water infrastructure.

Our first contract in the water market was in 2006, for the design and construction of the Wyndham Water Treatment Plant, in the north of Western Australia, for the Water Corporation.

Following its successful completion, Monadelphous secured follow-up contracts for projects which included the Lake Cathie/Bonny Hills Sewage Treatment Plant in New South Wales and the Burpengary East Sewage Treatment Plant Upgrade in Queensland.

Both of these projects were significant for Monadelphous. Lake Cathie/Bonny Hills demonstrated our capability to manage large scale projects on-time and within budget. Achievements on the $38 million Burpengary project included innovations to reduce shutdown time for required works at the plant.

Monadelphous’s success on these projects has established the company as a contractor of choice for large scale water infrastructure projects, ensuring repeat business from large utilities in Australia.