80% of irrigation water is actually wasted.
Mr Opinion,
Yes & no, if it seeps back into the aquifer good, if it runs to sea good, if it evaporates good but if it gets polluted then it's a definite no good !

Steel aqueduct will overcome a majority of seepage and steel aqueduct can be demountable.

Steel aqueduct with less seepage in canals taking bulk water to irrigated crops can mean more water for the environment.

Why is mainstream media gagging and suppressing and hindering development of modern infrastructure of benefit to the environment and business and employment?

JF Aus,
Because it could be achieved without academic "experts" involved, no finger in the pie so to speak !

Beats me why at least the ABC is not looking into such national economic opportunities.
No wonder Australia is going nowhere.
Backwards really.

Just look at Australia's fuel shortage, but I guess the worsen shortage will force up prices that will increase excise tax, and government will be very happy about that.
Why has the ABC not stood up for keeping Australian owned oil refinery?
Also, why no ABC investigative reporting or push for low cost natural gas for our vehicles in this vast long distance country?