Previous tech that has come to light in recent years:

There a beetles with dimples on the shell which can collect fog moisture, I think this is being used to provide water.

https://www.newscientist.com/article/dn1508-beetle-fog-catch...

https://news.mit.edu/2011/fog-harvesting-0421

Giving the nets an electrostatic charge which I believe also increases the amount of water that can be extracted.

https://www.science.org/doi/10.1126/sciadv.aao5323

However the article goes on to say that the land around is having less and less water. Perhaps the water table that fed the springs is falling due to extraction elsewhere?

Or that it was once replenished in the past and the rainfall pattern has changed.

Edit: links added

“A chance to develop tourism near the Fray Jorge national park, a remnant of temperate rainforest which has survived thanks to its own natural fog-collection mechanism, brought Salvador Velásquez to his birthplace of Peral Ojo de Agua.”

Enhance. Oh, I’m not on TV.

Bosque de Fray Jorge National Park:

https://en.wikipedia.org/wiki/Bosque_de_Fray_Jorge_National_...

Charming short video about how this forest is able to naturally draw water from the fog, a marvel:

https://youtu.be/HYyiaFejWmo

I visited Chile while on a random jaunt, ended up heading towards the observatories up north. La Silla was the first I stopped at, and for the entire drive between La Serena and the observatory, the mist over the mountains was most impressive. Install miles of these nets and you could have the world's biggest carbon neutral desalination plant.

http://archive.today/KU6rt

This article [in Spanish] about the "atrapanieblas" seems fairly informative:

https://lacontaminacion.org/atrapanieblas-un-sistema-efectiv...

What sort of maintenance does it require? The article describes it as the biggest implementation hurdle, apparently to the extent that it doomed a previous effort along the same lines, but doesn't go into detail on what it entails. Repairing rips or tears in the nets themselves?

There’s a project in Galapagos doing the same thing.

My favorite part of this article is the paywall about 2 paragraphs in.