A quick Internet search of crazy or stupid laws in Arizona will lead you to believe that it’s illegal to refuse a person a drink of water if they request it. Beware of finding laws on the Internet. You want to make sure that any law you cite is from an authoritative and reliable source. And, this is a great example. There is no law that makes it illegal to deny a drink of water. Of course, when it’s 120 degrees out, we hope everyone would be nice and help a person who needs a sip of water. But, you are not legally required to do so.
The moral of this story is be sure to double-check a primary legal source, like case law or a statute, before you rely on information you find on the Internet. The American Association of Law Libraries provides a guide on How to Research a Legal Problem if you would like to read more about researching your legal questions correctly.