Ceramic filters are very common in Brazil, used in clay recipients which also keep the water cool even in summer without spending energy.

https://g1.globo.com/saude/noticia/2026/03/14/filtro-de-barr...

▲

culi 4 minutes ago | parent | next [-]

Using clay to cool water in the summer is actually the original purpose of olla pots in the Southwest. They cool the water through evaporative cooling

Andy Ward demonstrated this https://www.youtube.com/watch?v=TBos0j0FszU

▲

hliyan 5 minutes ago | parent | prev | next [-]

Sri Lankan here. We've had this type of ceramic filter here for at least 35 years: https://cdn.shopify.com/s/files/1/0182/4859/7582/files/Ultra...

▲

hei-lima 2 hours ago | parent | prev | next [-]

Mostly in rural regions, but the 'filtro de barro' water from your grandma's house beats ANY expensive filter you can get, haha!

▲

weinzierl 4 hours ago | parent | prev [-]

This and the low-tech electrical shower-head are the two everyday Brazilian things that never cease to amaze me.

▲

mlinhares 3 hours ago | parent | next [-]

Being poor sucks but at the same time being poor also makes you find alternative solutions to the incredibly expensive solutions first world countries use today. I really wish Brazil can invest heavily into renewables and free itself from oil and electrify even more of everything we do.

▲

m463 an hour ago | parent | prev [-]

> electrical shower-head

Is that for electrically heated water?

I know that in the US on-demand electric water heater uses an enormous amount of electricity, like 100 amps.

▲

kawera 44 minutes ago | parent [-]

Brazilian electrical shower-heads use 20 to 30 amps max.

	▲	dtgriscom 35 minutes ago \| parent \| next [-]
		At what voltage? (I understand Brazil has districts with both 127V and 220V mains.) https://www.worldstandards.eu/electricity/plug-voltage-by-co...
	▲	idiotsecant 6 minutes ago \| parent \| prev [-]
		Then they don't heat same volume to same temp, it's thermodynamics