You might say that the Peruvians Without Water Movement (El Movimiento Peruanos sin Agua) has its head in the clouds. Literally. 

Because that’s where the fog is, and fog is a low-cost and accessible way to help the 3.8 million Peruvians who don’t have access to water.

Lima is dry. It’s home to more than 10 million people but gets less than an inch of rain a year. Two million residents don’t have access to the municipal water network, and that includes many rural migrants who can’t farm any more because of climate change.

But the thick grey fog that covers the city most of the year, caused by damp Pacific winds meeting hot sub-tropical air along Peru’s coast, now helps many poor families in the Peruvian capital who can’t afford to buy trucked water. It is often far more costly for them than it is for people in richer parts of the city.