Interesting water filter design. Expensive.

[feddoc]

How to Build a Plant Xylem Water Filter

Cheap, simple water filters made of plant xylem could dramatically reduce the incidence of water-borne diseases in places without access to clean drinking water, say engineers.

www.technologyreview.com

 

[BabyYoda]

Cork works better to keep you from drinking bugs

 

[Homer]

I bet that's high flow......