[Pecos]

One of the systems discussed condenses water from the atmosphere. No streams. No giardia. A similar system is being used in the high deserts of South America to provide the people there with their only dependable source of drinking water. Pretty clever engineering.

[Macoozie]

“... condenses water from the atmosphere...”

Could that be . . . Rain?

or maybe Galt went into the water bidness?

John Galt invented a motor that runs on ambient static electricity.

[TXnMA]

"One of the systems discussed condenses water from the atmosphere. "

~~~~~~~

Dune Fremen windstills -- courtesy of Frank Herbert