Fog
Where fog drifts through regularly, a net combs the droplets out of the air. That needs no electricity – but it does need fog, in many months of the year.
Climate figures for every place on earth
Pick a place and see what works there
Click on land. You then see the climate figures for the place, which building blocks are worth it there and a first suggestion.
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Where the water can come from
Four ways to get water at a place. Which one works is decided by the climate – the map above shows it for every point on Earth.
Rain
A roof is the cheapest water source there is. What counts is not the annual total alone, but how long a dry season the tank has to bridge.
Humid air
On coasts the air is often humid even where it barely rains. An atmospheric water generator turns that into drinking water – but it needs a lot of energy to do so.
Energy
Without electricity no generator and no UV-C treatment runs. So sun and wind have to suit the place – otherwise only technology that works without power is left.