Water & Wastewater

Water is our most precious resource and smart management secures it for our future. John Holland is recognised as one of the most diversified engineering service providers to the water, wastewater and agriculture sectors with strong integrated and specialist process skills.

Sydney Desalination Plant, NSW

Water is our most precious resource, keeping it safe for the future is our focus.

Our specialist teams ensure the continued delivery of cutting-edge water, wastewater technologies and treatment processes to our customers.

We have been contracted to design and deliver some of the most innovative and award-winning water infrastructure assets, including two seawater desalination plants in Australia; the first thermal sludge hydrolysis facility and the first acid phase digestion facility in Australia; and the world’s largest sludge incineration facility in Hong Kong.

The Sundrop Farm agricultural operations expansion was a showcase of our integrated engineering expertise. The project at Port Augusta in South Australia saw the construction of a new facility that uses solar-thermal technology to sustainably generate fresh produce all year-round in a semi-arid environment.

Treatment & Recycling Technology

We are a leader in all facets of water and wastewater treatment plant, design, construction, operation and maintenance. We have delivered large-scale urban and regional projects, designing and delivering comprehensive integrated infrastructure solutions.

Pipelines, Pumping & Irrigation Systems

We plan, design and deliver pipelines, and irrigation and reticulation channels, and have automated delivery systems and refurbishment solutions for aging water distribution and irrigation channels to improve water access and efficiency.

In addition to our wealth of Australian experience, we have successfully delivered projects in both the North and South Islands of New Zealand including the Hunua 4 Watermain (Sections 1-10) in Auckland and Stage 1 of the Central Plains Irrigation Scheme in Canterbury.

Dams & Storages

We have delivered dam upgrades across Australia to improve the safety and storage capacity of reservoirs. Our capabilities include strengthening of the existing embankments, major structural upgrades of the existing spillway and installation of gates on spillway crests.

A number of projects such as the Cotter Dam, ACT, Wyangala Dam, NSW, Eildon Dam, VIC, and Split Rock Dam, NSW, have also included construction works adjacent to operating dams and reservoirs, and we fully appreciate the importance of maintaining the integrity, safety and operation of these facilities throughout delivery.