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
Amazon.com: Stéfani São João Brazilian Clay Water Filter (6 L - 1.6 gal), Brown : Tools & Home Improvement
An international research collaboration develops clay water filters to reduce diarrheal disease - Fogarty International Center @ NIH
Ceramic Water Filters – Resource Development International
3D model Clay Water Filter VR / AR / low-poly | CGTrader
Terravitaindia's Classic Clay Water Pot With Tap: 7L Capacity for Healthier Hydration . - Etsy
Design of clay-pot water filter | Download Scientific Diagram