Home » Law & Government » Public Safety » Emergency Services » Firefighters use wetting agents to make water wetter. The chemicals reduce the surface tension of plain water so it’s easier to spread and soak into objects, which is why it’s known as “wet water.”

Firefighters use wetting agents to make water wetter. The chemicals reduce the surface tension of plain water so it’s easier to spread and soak into objects, which is why it’s known as “wet water.”

Firefighting Foam – Making Water Wetter

As a largely misunderstood firefighting tactic, the use of foam has at times been confusing to the fire service. The result is that many municipal brigades/departments have just avoided the use of foam, especially Class A foam and have transitioned to using emulsifiers or wetting agents.

While the end objective is to stretch valuable and at times limited water resources, it is more important to fully understand the fit for purpose of each of these technologies.This assures that these valuable tools provide maximum benefit. Foam is a very effective firefighting tool for flame knockdown, fire control, extinguishment, and burn-back resistance (Class B foam). Control, extinguishing time, and burn-back resistance are paramount to the safety … Continue Reading (7 minute read)

Leave a Comment