The best way to prevent water damage at a fire scene is to:

Limiting the amount of water used to fight the fire is an effective strategy for preventing water damage at a fire scene. By using water judiciously, firefighters can control the fire while minimizing the excess water that could infiltrate other areas, leading to potential damage. This approach requires a balance between extinguishing the fire safely and efficiently and reducing the overall impact of water on the structure.

In many cases, firefighters can employ tactics such as assessing the fire situation, selecting an appropriate attack method, and utilizing various techniques, like targeted application of water or utilizing fire suppression agents that might reduce the total volume of water needed. Being strategic about water application can greatly help in preserving structural integrity and reducing the risk of secondary damage caused by excessive water.

Other options, while they may seem helpful, do not effectively address the overarching issue of water management at a fire scene.