I was wondering around on GovLiquidation, and found that they have 141 separate auctions for hand pumped water filters / desalinators / watermakers:
Recovery Engineering Inc, P/ N: 0BJ61/ MR0D-35-LA-1, Ion exchange water demineralizer, PUR survivor-35, Hand operated pump, Usage location: stored in life rafts or man overboard packs, ejection seats, troop transport aircraft, and ships
Search Page Link.
Starting bid is $150 ea.
Bidding starts on 05/17.
Location is Oklahoma City.
No connection, yadda yadda. I'd like to have one, but don't have the fun coupons right now. Just thought I'd pass it along.