There's an alternative view on what some call "price gouging."
The idea is that the market is providing a strong incentive for you to figure out how to get bottled water to the disaster zone. This is wildly unpopular: people view it as capitalists profiteering off a disaster. And it's true, they are.
In response, people demand prohibition of price gouging.
But the result is a lack of product availability. For example, one study linked anti-gouging laws with limited product availability during the pandemic. [1]
To take the example of the increase in costs of goods leading to a hurricane: there is a risk that the hurricane will veer off path, and all the extra goods will just sit, unbought. The anticipation of high prices causes vendors to logistically stage larger quantities of goods to the market. Mandated 'normal' prices lead to scarcity.
So ultimately we're left with a choice: do we prevent price gouging, and content ourselves with lack of product knowing that nobody made an 'unfair' dollar? Or do we let price gouging happen, knowing it'll result in better product availability and reduce hoarding?
[1] http://journal.apee.org/index.php?title=Parte1_2020_Journal_...