Photo credit: Draftfcb / UTEC

Just outside the small community of Bujama, Peru, is a billboard that cost around $32,000 to make, and that creates approximately 100 litres of drinkable water every day.

"It works by condensing vapour in the air (humidity in the region is around 98 per cent) into water, before passing it through a series of filters and running it under UV lamps for further purification. The clean water is then collected in a tank and dispensed through a tap which can be used by anyone walking past."

Quoted from Creative Review.

The video embedded below gives a bit more detail.

The billboard is the product of a partnership between outdoor advertising owner Clear Channel Peru, researchers at the University of Engineering and Technology (UTEC) in Lima, and advertising agency Draftfcb.

Also reported on the BBC website: Advert turns air into water.

Brilliant idea. Let's hope it's not a one-off.