Unlikely. My country have been through this (at a whole country level, not just a single city) for two years. It sped up desalination projects. People re-adjusted to the lack of water. Prices adjusted. Lots of water is wasted and very little water is actually being used for drinking. At the end, the rain came and it coincided with many desalination plants starting operations.
The prime minister suggesting evacuations is probably political. It is much easier to adjust to lack of water than to move your home/job somewhere else.
They’re already straining to truck in enough water for survival now WITH some of the wells still working. If the ability to source water locally stops the people of Tehran will either need to move or die. With aquifers running dry from iran to Afghanistan they’ll have to migrate even further. I think we could see the entire region plunge further into chaos as the water crisis worsens.
That's just a Western pipe dream. The water crisis could trigger a revolt but the fundamentals for such revolt have to be there rather than the water crisis being the sole reason.
> people of Tehran will either need to move or die
No. I've lived (along a million other people) without water for many months during a hot summer episode. It was a major lifestyle degradation (and major doesn't even begin to describe it) but death was not a threat (though there was fear of disease spread due to possible degradation of sanitary conditions but that didn't happen either).
The prime minister suggesting evacuations is probably political. It is much easier to adjust to lack of water than to move your home/job somewhere else.