I've just noticed something about a lot of our PSKs that concerns me - the water bags included are not sized correctly for the kind of water treatment that is included.
For example, if you have repackaged some Potable Aqua and are planning to use a Gerber breast milk bag as your water container, you have a problem: Potable Aqua is formulated to work with one quart of water at a time, or 32 ounces. The Gerber bag holds 10 ounces at the most. You could use 1 Potable Aqua tablet, but that's still giving you way too much iodine for the amount of water you have.
If you're using Aquaclear or something similar, it calls for 1 tablet per liter (0.94 quarts, so they're roughly equal). If your water bag only holds 10-12 ounces, that is way more chlorine that you need.
I don't have any experience with Aquaclear tablets, but I know the Potable Aqua tablets are very small and would be almost impossible to divide without crumbling the whole thing to dust. I also don't know what health effects, if any, would result from using too high a concentration of water purification, but I'm sure that's a complication you don't need if you're already in a survival situation.