I'd be inclined to vote against it
Not that snakes in the wild don't regularly drink water from such sources, but it's hard to know what micro-organisms might live in it. Boiling should render it much safer, but there is still the concern that the pH, hardness, etc. would be unsuitable for drinking. You can leave a bucket of tap water uncovered for 24 hours and chlorine will dissapate to the point that it is safe to drink.