Advances in irrigation technology, the ABC says, have lowered the amount of water needed to produce almonds by a third.
Thirty years from now, the amount of water needed to produce our food will rise by at least half, and may even double.
The production of 1kg of beef uses 12 times the amount of water needed to produce 1kg of wheat, and more than five times the amount of land.
Environmentalists also object to the vast tracts of land courses take up, as well as the amount of water needed to keep them properly irrigated.
Washers, for example, will have to have sensors to measure the amount of clothes in them and meter out precisely the amount of water needed; they will also spin faster, cutting down the work that the clothes dryer must do.
It is also very sensible that these bans now exempt drip/trickle irrigation watering systems, which - in sharp contrast to sprinklers - are a highly efficient way to radically reduce the amount of water needed by gardeners.
While the average amount of water needed for a cup of tea is about 250ml, the minimum‑fill line of most kettles is 500ml, meaning half the hot water gets wasted.
And in the middle of the country, a lawyer in a water-starved region has designed a system that reduces the amount of water needed to grow crops and raise fish.
Compared to the uncertified version Shaw previously manufactured, energy efficiency combined with its switch to renewables has cut the environmental cost of making carpet tiles by more than half, along with the amount of water needed to produce a tile.
At home, plants would receive exactly the correct amount of water needed, with the pot keeping track of the state of the soil, atmospheric conditions and time of day.
The new grass could drastically reduce costs and maintenance at golf courses, and a drought-tolerant variety could reduce the amount of water needed to keep the turf healthy, Scotts executives say.
