I made a water filter from cane that siphons clean water from a dirty water while simultaneously using the xylem present in the the cane as a filter. MIT engineers had already proved that pine branches can be used as water filters as the thin membranes connecting the straw like xylem filter out 99% of bacteria such as E.coli which make water unsafe to drink. Taking this concept, I used a type of cane in the forest and bent them into hook shapes, tying them in place with vine. Then I put dirty water into a raised pot and siphoned clean water from it into a lower collection pot. Initially some sap comes (which is also harmless to drink) out but then water flows through the stem. It does take a while for it to work but the process can be sped up by adding multiple canes working in parallel. The water that came through is clean and I was able to drink it without ill effect. After a few days the canes clog up and need replacing though one cane laste