Water is the most prevalent extinguishing agent in use, because:
1. It is inexpensive. (It is customarily free to ﬁre departments; however, considering the costs associated with the infrastructure of the water system, is it really free?)
2. It is commonly available, either through a municipal or private water distribution system and hydrants or by ﬁre departments moving it to the desired location via equip-ment and trained ﬁre ﬁghters.
3. Generally it is efﬁcient at extinguishment when applied properly.p.148