Rain Check Buffalo - This is cool

[WNYresident]

Yeah, probably because they can't guarantee that everyone's roofs and gutters aren't contaminated with something. One person's house might not be that bad, but someone else might have a dead bird in the gutter, or roof shingles that are leaching some sort of chemical. Safer to just say "don't drink it". But it would still be a savings if it were used to water the garden or wash the dog instead of using the pristine water from the faucet for that kind of stuff.

I would not wash my pets with it either.