" Think of it as cooking a piece of pork. You need to cook a pork roast longer than a piece of bacon in order to get the internal temp up to a sterilization temp."

Good advice. Thanks for that :-)
In my head I'll think of it this way ...
"you're not boiling water - you're boiling soup. Make sure the soup is well cooked."

I'm still hoping someone can report back with a firsthand account of these straws that filter water. It seems like they would clog easily - if there is any suspended dirt or organic matter in the water. But let's see what the folks here say.

Pete2