When using water to extinguish a fire involving pesticides or a poison, what impact should the responder consider?

When using water to extinguish a fire involving pesticides or a poison, what impact should the responder consider?

• A. Increased fire intensity
• B. Vapor plume
• C. Structural collapse
• D. Run-off contamination

Answer: (D)

Water can cause pesticides and poisons to spread off the scene. When you apply it to a fire involving these materials, soluble residues and contaminants can be washed into soil, storm drains, streams, or groundwater, creating environmental and public health risks. The big concern is containing and collecting that runoff so it doesn’t transport toxic substances to other areas or waterways. This is why responders emphasize containment measures, absorbents, and proper disposal of contaminated runoff rather than relying on water alone to control the fire. While vapor release or changes in fire behavior can occur in certain situations, the potential for runoff contamination is the primary impact to consider when pesticides or poisons are involved.

Water can cause pesticides and poisons to spread off the scene. When you apply it to a fire involving these materials, soluble residues and contaminants can be washed into soil, storm drains, streams, or groundwater, creating environmental and public health risks. The big concern is containing and collecting that runoff so it doesn’t transport toxic substances to other areas or waterways. This is why responders emphasize containment measures, absorbents, and proper disposal of contaminated runoff rather than relying on water alone to control the fire. While vapor release or changes in fire behavior can occur in certain situations, the potential for runoff contamination is the primary impact to consider when pesticides or poisons are involved.