I had purchased a water card some time back at this business that is still valid for six 5-gallon fill-ups and tried to redeem it--only they won't honor the card anymore despite it not having an expiration date on it. They are the same company at the same address, but they say that they purchased the store from someone else and that they just aren't honoring these cards anymore. Sorry to hear this...cause I would assume that a company that takes over another one should factor in that there might be outstanding pre-purchased cards out there if bankruptcy was not involved.