I often recommend Spain for US emigrants, quality of life and cultural norms are similar, and Spanish is easier to pick up when you’ve heard it as much as you do from US media.

Netherlands and Scandies have a great reputation, but there’s significant culture shock and you risk feeling more alienated for longer.

Raising water temperature from 10 to 500 degrees requires about 500 calories/mm3. That’s 2 MJ/litre, meaning if you want to heat 1 liter/second you need 2 MW with perfect insulation, so a power plant of say 10 MW.

A post industrial world citizen could probably get by on 200 l/day (US averages about 300/day). That needs 2 kW/person/day.

Total global energy production is about 630 EJ which averages out at about 12 TW.

Meaning if the whole global energy production went to treat water in that way, we have enough clean water for about 6 million people.