Ingenious solar distiller makes fresh water from seawater for less than 1cent a gallon

[NickB79]

8. Still far too expensive for agriculture

An acre foot of water can sell for $500-$1000 in California for irrigation.

That's almost 326,000 gallons.

At a penny per gallon, it's over 3X as expensive as the most expensive water farms buy today. Crops use insane amounts of water, especially in dry regions with sandy soil.

And agriculture is what consumes the vast majority of water in water-stressed areas like California. Water for cities is a small fraction of the water needed.