A Brazilian clay water filter. Considered one of the best water filters in the world. Dated 1947, this is able to keep the water -3/5 º C cooler than ambient temperature. It's
Water filter, very common in Brazil [4032x3024] : r/ThingsCutInHalfPorn
Clay water filter 12.5L . Product of Sri Lanka
Stéfani São João Brazilian Clay Water Filter (6 L | Ubuy Finland
Grad student uses ceramics knowledge to improve water filter production in Uganda - The American Ceramic Society