[Bogey78O]

That’s the big problem. Water collection hasn’t advanced much from olden times because the places that need it badly usually have collection laws.

[Rodamala]

The “smart” thing to do is not build a megaopolis in a damned desert. It’s not “sustainable”.

[SkyDancer]

Accordingly it’s better for the water to just drain into the ground than be collected and used. Liberal madness.

[arthurus]

In some states collecting rainwater will get you thrown in jail.