so filter and then drop in a iodine or clorine tablet, should cover it then?
Some of the companies sell a water purification "system".
That is all the system is, filter and drops/tabs.
From what I understand that is over kill for anything back country here in the states.
It is a concern when in third world countries where there is poor sanitation practices.
I carry both but never use both. I pump usually and have tabs in the event of pump failure.