system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can't we get salt out of seawater efficiently enought to irrigate with?

it just seems like there'd have to be a way.
gpt
Two reasons:

1)  It costs a lot of money to desalinate water, it's a very energy intensive process.

2) There's no good way to get rid of the leftover salt.  Desalination plants generate millions of gallons of toxic brine that can't be discharged back into the ocean.