Can I take a sealed bottle of water through security?

Only a bottle with 3.4 oz or less of water would be permitted through the Transportation Security Administration (TSA) security checkpoint. Bottled water is available for purchase at Southwest Florida International Airport (RSW) past the security checkpoints. In addition, each concourse at RSW has a water bottle refill station (near the drinking fountains). You could pass through the security checkpoint with an empty water bottle and refill it once you are through security.

Absolutely not.