I was just wondering if there is a certain way you guys purify water on the go.

I have a 32 Oz. Widemouth Nalgene, and I plan on using Katadyn MP1 tablets with it. But... I was thinking, How are you supposed to get the contaminated water in the bottle without getting contaminated water on the threads of the mouthpiece? The Water Purifier Tablet will not get to the threads and you will be placing your lips right on them every time you drink. Unless you are using a HumanGear CapCAP, You are just asking for parasites to make you sick. I plan on buying a CapCAP but, I am wondering, If i do not get the chance to, what do I do?

Also, If the Water Purifier Tablets require a dark place for 4 hours, where is the dark place? I know you could put it in your pack, but that would add weight and I would want to leave it if im OTG (On The Go).

They have Water Filters that fit on the threads but those have a limited life, are cumbersome, and are too expensive for me. I haven't gotten to go to REI any time soon, so I will have to hold off on the CapCAP.

I cant wait to figure this out! Thanks