Land Area (in hectares.): 746.50
In pre-Spanish time, it was known as San Jose and was then a sitio of Barangay Alos. Both were then part of Zambales. In the early times, there were only three families who stayed in that area. Most of the migrants came from Ilocos Sur. They were the Quitania, Calzo and Guillermo families.
The river in this place was so deep and has so many tiny springs except for the huge one near the solid rocks. The big spring was called “quibuar” a native dialect which means “spring.” Since then the place was named “Quibuar” pertaining to the spring.