Clipped again.
FWIW. The rest of the post:

There is no entirely failsafe water treatment. I currently use some combination of gross filtration, iodine or chlorine based treatment, boiling and fine filtration to keep me safe. What particular combination I use depends on how much weight I'm willing to carry, the terrain and availability of fuel, and both the relative and known contamination in the area.

I had good luck hiking the southern forests using a very fine stainless filter or cloth to remove sediment and boiling the water using the readily available twigs and pinecones burned in a Sierra stove. I kept a small ceramic filter and a tiny bottle of iodine tablets as reserve.

I have also used a Sweetwater filter with good results. It saved me time and some weight over the Sierra stove option. I kept chlorine tablets handy for water that may have had human contact. And kept a pour-through filter and iodine tablets as a reserve.