Aloha all,
I have direct experience with the
water BOB. I live in a high rise condo with bathtub.
I purchased one from the American Red Cross around December 2009.
I used it on the day of our Tsunami Warning 2/27/2010.
I knew it was a one time use thing, so I waited until the last possible hour to fill it up. I watched the initial reports from the Big Island and tried to determine if the surge was enough to worry about. I was conflicted because I KNEW if I filled it up, nothing would happen and I would waste the BOB. And if I didn't fill it up and tsunami washes ashore, knocks out the power, and shuts down water production, I would be kicking myself for not filling it up. So, in this event, I decided to play it safe and utilize the water BOB. At worst, it would be a $30 test to see if it worked as designed.
The water BOB fits very well in a standard size tub. Attachment to the spigot is a little tricky, so be sure to have some tape on hand to hold it in place, since it is basically a flimsy plastic sleeve that slips over the spigot. It took about 20 minutes to fill it up, and I didn't have the water on full blast (because of the flimsy sleeve / tape attachment). They say it holds 100 gallons, but I filled the bob to the top of my tub and there was still some excess plastic that it could have expanded with water, so this amount will vary based on the size of your tub. Realistically, I probably had 80-90 gallons in the BOB.
So sure enough, THANKFULLY, the Tsunami was a non-event. I left the water BOB in the tub for the remainder of the day to test the short term structural integrity, practiced pumping water using the very useful hand pump, and showing my wife how it worked etc. I then cut a long slit in the plastic and began the draining process. The plastic was thick enough for me to believe it would certainly hold up for as long as you had water in it (definitely a month minimum is my estimate - not sure about UV degradation though, so in all likelyhood in a cool, non-sunlit room - a very good amount of time) Also, the hand pump that I mentioned is really quite good, and in all likelihood could be used as an emergency bailer in an outrigger, or siphon pump in your gas tank (though I'm sure the manufacturer wouldn't recommend either of those uses. But the SHTF, so who cares, right!)
In the end, the water BOB is a very practical means for quick water storage, especially if you live in a condo and can't have 55 gallon drums sitting around everywhere. Very easy to use, I have confidence in it's structural integrity, and highly recommend it.
Caveat - only recommend for a bathtub. Not sure how it would perform structurally stand-alone or without other types of structural support.
I bought mine for Red Cross for $30 (I think), and the website sells them for Price of only $19.95 + $4.95 Shipping. Buy 4, get one free, so seems to make sense to get together with some family/friends and split the cost to get one free.
Regards and aloha,
KNOWLEDGEISPOWER