Overview
Firewater refers to water that has been used in firefighting and requires disposal. In many cases, it is a highly polluting material and requires special care in its disposal.
Description
In many firefighting situations, large quantities of water remain after the fire has been extinguished. This firewater contains materials present in the building and also contains dissolved and particulate materials from combustion processes and materials generated through quenching.
Firewater can be particularly polluting when the building or site being extinguished itself contains potentially polluting materials such as pesticides, organic and inorganic chemical reagents, fertilizers, etc. Certain premises, including farms and the chemical industry, pose special risks because of the types of materials present. Premises containing quantities of plastics can also cause severe problems because of the taste and odor imparted to the firewater.
Releasing contaminated firewater into a river, lake or other body that supplies drinking water may render the untreated supply unsuitable for drinking or food preparation. Managing firewater frequently requires that the water be contained on the site until removed from a specialized treat statement. One of the recognized techniques is to contain the firewater in the drainage system using pneumatic bladders or lockable non-return valves, which can be activated automatically or manually.
From Wikipedia (CC BY-SA 4.0).