> If you want to drink healthful water: use a multi-stage filter You mean "pure" water. A filter like that removes the good with the bad so we don't know if th

> If you want to drink healthful water: use a multi-stage filter You mean "pure" water. A filter like that removes the good with the bad so we don't know if the end result is actually "healthful" or simply "clean". http://www.who.int/water_sanitation_health/dwq/nutrientschap12.pdf http://www.who.int/water_sanitation_health/dwq/nutrientschap...