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 Western Australia, for the Water Corporation.

In 2015, Monadelphous acquired Water Infrastructure Group, a leading provider of water infrastructure solutions across Australia and New Zealand. With long term customer relationships with councils, utilities and the private sector, the acquisition provided Monadelphous with a broader capability in the water market across Australia, with a number of unique service offerings and innovative solutions.