Water storage that is easy to handle

The "fresh-ass baby" post (many CONGRATS on their arrival! And...how great that the water prep paid off!) has finally driven me to actually post something....

I keep water in those prone-to-leak 1 gallon water jugs from the grocery store and rotate frequently because there is simply NO way I could ever fill, lift, or move a 5 gallon or 7 gallon Aqua-Tainer. And I live alone.

Are there any strong, long-lasting, BPA-free water storage options which would not be so heavy and still be affordable for a single person on fixed income with limited physical strength?

Thanks for any ideas. (Besides "get stronger" which of course I have worked very hard to do, but I have serious health issues.)