For over 42 years, Diona has partnered with leading asset owners to keep the water running, lights on and waste managed for Australian communities.
Why Diona?

Protecting Warragamba Pipeline ensures water security for Greater Sydney communities

A critical part of securing water supply for the 5.3m people of Greater Sydney, is to ensure the longevity of the primary pipeline that transports water from Warragamba Dam. WaterNSW has embarked on a program to protect the 27km pipeline from the elements by coating the exterior with industrial aluminium.

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Belconnen Trunk Sewer Project - Two timelapse cameras have been patiently capturing the impressive efforts to install the 170m pipe bridge across Ginninderra Creek

Our Continued Commitment to ESG Excellence

We are thrilled to announce the introduction of our ESG Statement at Diona, a significant advancement in our ongoing commitment to sustainability and responsible business practices.

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Warragamba Pipeline & Corridor Restoration Program

Diona to continue with the Warragamba Pipeline & Corridor Restoration Program - Tranche 2 Coatings Package for WaterNSW.

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What we've achieved

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42 Years of Operation
Since 1980

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2,500 Project Delivered

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8,000 Kilometres of underground infrastructure delivered

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13,500,000 Hours worked

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$1,250,000 Donated in support of mental health