The show frames Cartman’s racism as a personal disaster equivalent to the literal tsunami of urine. His fear that he is the "last white person left" exposes the irrationality of xenophobic "replacement" theories, especially when he eventually realizes his world hasn't actually ended. V. The Burden of Heroism (Kyle’s Arc)

Through a gross-out premise of a urine-flooded waterpark, the episode satirizes the absurdity of the disaster film genre while providing a sharp critique of modern racial paranoia and the "Tragedy of the Commons." II. The Disaster Film Parody

Cartman spends the episode panicking about the "minority" presence at the park, singing "Minorities at my Waterpark".

Pi Pi, the park owner, prioritizes profit over safety, ignoring the "98% urine" threshold that triggers the disaster. IV. Satire of Racial Paranoia

The military’s subplot—believing the urine has caused a zombie-like mutation—parodies government incompetence. Their "vaccine" trials on monkeys (and eventually Stan's dad) ending in the discovery that bananas are the cure mocks the often-contrived resolutions of Hollywood thrillers. III. The Tragedy of the Commons

The waterpark represents a "shared resource". Every guest thinks their small amount of urine won't matter, but the cumulative effect destroys the park for everyone.

The episode mirrors 2012 and other disaster films where a scientist’s ignored warning leads to a global (or park-wide) catastrophe.