Is there other directories besides Thomson to search for small to mid-sized companies who will take on a small custom sized bottled water filling runs (Under 50K units)? Even companies who have a single valve machine can do the job! Any help would be greatly appreciated!

International Bottled Water Association has a listing of its' members.

Bottler Members | Bottled Water | International Bottled Water Association

Also, try plugging various phrases and keywords into Google. That should yield some results as well.

How about a listing for canned production of items other than water?