To survive in the post-apocalyptic world, one must always be equipped to detect slow death, as in radiation poisoning. Max takes out a radiation detector and declines the water. In interviews about Mad Max 2: The Road Warrior (1981) (a.k.a. "The Road Warrior"), George Miller said that while Max's world was after the collapse of the social/political/economic system we know, it was not post-World War III. However, "Beyond Thunderdome" explicitly is set after WWIII indeed.
We'll Give You the Plotline, You Tell Us the '80s Movie Title
6 Minute Quiz 6 Min